HO-CHUNK NATION CODE (HCC)

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TITLE 6 – PERSONNEL, EMPLOYMENT AND LABOR CODE

SECTION 8 – OCCUPATIONAL SAFETY AND HEALTH

PROGRAM ACT OF 2002

SUBSECTION 4 – ELECTRICAL SAFETY

ENACTED BY LEGISLATURE: MAY 20, 2002

LAST AMENDED AND RESTATED: December 6, 2022

CITE AS: 6 HCC § 8-4

1. Authority. See basic document (Occupational Safety and Health Program Act).

2. Purpose. This subsection of the Occupational Safety and Health Program Act provides practices

and procedures intended to provide for employee safety relative to electrical hazards in the

workplace.

3. Definitions. See basic document (Occupational Safety and Health Program Act). In addition, the

following definitions apply to this subsection.

a. “Accessible” as applied to wiring methods, means capable of being removed or exposed

without damaging the building structure or finish, or not permanently closed in by the structure or

finish of the building.

b. “Accessible” as applied to equipment, means admitting for close approach; not guarded by

locked doors, elevation, or other effective means.

c. “Accessible, Readily (Readily Accessible)” means capable of being reached quickly for

operation, renewal, or inspections, so that those needing ready access do not have to climb over or

remove obstacles or to resort to portable ladders, chairs, etc.

d. “Ampacity” means the current, in amperes, that a conductor can carry continuously under

the conditions of use without exceeding its temperature rating.

e. “Attachment Plug (Plug Cap) or (Cap)” means a device that, by insertion in a receptacle,

establishes a connection between the conductors of the attached flexible cord and the conductors

connected permanently to the receptacle.

f. “Barricade” means a physical obstruction such as tapes, cones, or A-frame-type wood or

metal structures intended to provide a warning about and to limit access to a hazardous area.

g. “Barrier” means a physical obstruction that is intended to prevent contact with equipment

or live parts or to prevent unauthorized access to a work area.

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h. “Bonding (Bonded)” means the permanent joining of metallic parts to form an electrically

conductive path that will ensure electrical continuity and the capacity to conduct safely any current

likely to be imposed.

i. “Bonding Jumper” means a reliable conductor to ensure the required electrical conductivity

between metal parts required to be electrically connected.

j. “Branch Circuit” means the circuit conductors between the final overcurrent device

protecting the circuit and the outlet(s).

k. “Circuit Breaker” means a device designed to open and close a circuit by non-automatic

means and to open the circuit automatically on a predetermined overcurrent without damage to itself

when properly applied within its range.

l. “Competent Person” means one who is capable of identifying existing and predictable

hazards in the surroundings or working conditions that are unsanitary, hazardous, or dangerous to

employees and who has authorization to take prompt corrective measures to eliminate them.

m. “Concealed” means rendered inaccessible by the structure or finish of the building. Wires

in concealed raceways are considered concealed, even though they may become accessible by

withdrawing them.

n. “Conductive” means suitable for carrying electric current.

o. “Conductor” means any of the following:

(1) Bare Conductor. A conductor having no covering or electrical insulation

whatsoever.

(2) Covered Conductor. A conductor encased within material of composition or

thickness that is not recognized by this standard as electrical insulation.

(3) Insulated Conductor. A conductor encased within material of composition and

thickness that it is recognized by this standard as electrical insulation.

p. “De-energized” means free from any electrical connection to a source of potential

difference and from electrical charge; not having a potential different from that of the earth.

q. “Device” means a unit of an electrical system that is intended to carry but not utilize

electric energy.

r. “Disconnecting Means” means a device, group of devices, or other means by which the

conductors of a circuit can be disconnected from their source of supply.

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s. “Electrical Hazard” means a dangerous condition such that contact, or equipment failure

can result in electric shock, are flash burn, thermal burn, or arc blast injury.

t. “Electrical Safety” means recognizing hazards associated with the use of electrical energy

and taking precautions to reduce the risk associated with those hazards.

u. “Electrically Safe Work Condition” means a state in which an electrical conductor or

circuit part has been disconnected from energized parts, locked/tagged in accordance with established

standards, tested to verify the absence of voltage, and if necessary, temporarily grounded for personal

protection.

v. “Exposed” as applied to live parts, means capable of being inadvertently touched or

approached nearer than a safe distance by a person. It is applied to parts that are not suitably guarded,

isolated, or insulated. (NOTE: See “Accessible” and “Concealed”)

w. “Exposed” as applied to wiring methods, means on or attached to the surface, or behind

panels designed to allow access. [NOTE: See “Accessible (As applied to wiring methods.)]

x. “Ground” means a conducting connection, whether intentional or accidental, between an

electrical circuit or equipment and the earth, or to some conducting body that serves in place of the

earth.

y. “Grounded” means connected to the earth or to some conducting body that serves in place

of the earth.

z. “Grounded Conductor” means a system or circuit conductor that is intentionally grounded.

aa. “Grounded, effectively” means intentionally connected to earth through a ground

connection or connections of sufficiently low impedance and having sufficient current-carrying

capacity to prevent the buildup of voltages that may result in undue hazards to connected equipment

or to persons.

bb. “Grounding Conductor” means a conductor used to connect equipment or the grounded

circuit of a wiring system to a grounding electrode or electrodes.

cc. “Ground-Fault Circuit-Interrupter” means a device intended for the protection of

personnel that functions to de-energize a circuit or a portion within an established period of time

when a current to ground exceeds some predetermined value that is less than that required to operate

the overcurrent protective device of the supply circuit.

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dd. “Limited Approach Boundary” means an approach limit at a distance from an exposed

energized electrical conductor or circuit part within a shock hazard exists.

ee. “Overcurrent” means any current in excess of the rated current of equipment or the

ampacity of a conductor. It may result from overload, short circuit, or ground fault.

ff. “Overload” means the operation of equipment in excess of normal, full-load rating, or of a

conductor in excess of rated ampacity that, when it persists for a sufficient length of time, would

cause damage or dangerous overheating. A fault, such as a short circuit or ground fault, is not an

overload. (See Overcurrent.)

gg. “Panelboard” means a single panel or group of panel units designed for assembly in the

form of a single panel; including buses, automatic overcurrent devices, and with or without switches

for the control of light, heat, or power circuits; designed to be placed in a cabinet or cutout box

placed in or against a wall or partition and accessible only from the front. (See Switchboard.)

hh. “Qualified Person” means one who, by possession of a recognized degree, certificate, or

professional standing, or who by extensive knowledge, training and experience, has successfully

demonstrated his ability to solve or resolve problems relating to the subject matter, the work, or the

project.

ii. “Receptacle” means a contact device installed at the outlet for the connection of an

attachment plug. A single receptacle is a single contact device with no other contact device on the

same yoke. A multiple receptacle is two or more contact devices on the same yoke.

jj. “Restricted Approach Boundary” means an approach limit at a distance from an exposed

energized electrical conductor or circuit part within which there is an increased likelihood of electric

shock, due to electrical arc-over combined with inadvertent movement.

kk. “Switchboard” means a large single panel, frame, or assembly of panels on which are

mounted, on the face or back, or both, switches, overcurrent and other protective devices, buses, and

(usually) instruments. Switchboards are generally accessible from the rear as well as from the front

and are not intended to be installed in cabinets. (See Panelboard.)

ll. “Voltage (of a circuit)”, means the greatest root-mean-square (rms) (effective) difference

of potential between any two conductors of the circuit concerned.

mm. “Voltage, Nominal” means a nominal value assigned to a circuit or system for the

purpose of conveniently designating its voltage class (as 120/240 volts, 480Y/277 volts, 600 volts).

The actual voltage at which a circuit operates can vary from the nominal within a range that permits

satisfactory operation of equipment.

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nn. “Working On (energized electrical conductors or circuit parts)”, means intentionally

coming in contact with energized electrical conductors or circuit parts with the hands, feet, or other

body parts, with tools, probes, or with test equipment, regardless of the PPE a person is wearing.

There are two categories of “working on”: “Diagnostic (testing) is taking readings or measurements

of electrical equipment, conductors, or circuit parts with approved test equipment that does not

require making any physical change to the electrical equipment, conductors, or circuit parts.

“Repair” is any physical alteration of electrical equipment, conductors, or circuit parts (such as

making or tightening connections, removing or replacing components, etc.)

4. Training Requirements.

a. The training requirements contained in this section shall apply to employees exposed to an

electrical hazard when the risk associated with that hazard is not reduced to a safe level by the

electrical installation requirements. Such employees shall be trained to understand the specific

hazards associated with electrical energy. They shall be trained in safety-related work practices and

procedural requirements, as necessary, to provide protection from the electrical hazards associated

with their respective job or task assignments. Employees shall be trained to identify and understand

the relationship between electrical hazards and possible injury.

b. The training required by this section shall be classroom or on-the-job type, or a

combination of the two. The type and extent of the training provided shall be determined by the risk

to the employee.

c. Employees exposed to shock hazards and those responsible for the safe release of victims

from contact with energized electrical conductors or circuit parts shall be trained in methods of

release of victims from contact with exposed energized conductors or circuit parts. They shall be

regularly instructed in methods of first aid and emergency procedures, such as approved methods of

resuscitation, if their duties warrant such training. Refresher training shall occur annually.

d. Qualified Persons.

(1) A qualified person shall be trained and knowledgeable in the construction and

operation of equipment or a specific work method and be trained to identify and avoid the electrical

hazards that might be present with respect to that equipment or work method. Such persons shall also

be familiar with the proper use of special precautionary techniques, electrical policies and

procedures, personal protective equipment, insulating and shielding materials, and insulated tools and

test equipment. A person can be considered qualified with respect to certain equipment and tasks but

still be unqualified for others. Such persons permitted to work within the limited approach boundary

shall, at a minimum, be additionally trained in all of the following:

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(a) The skills and techniques necessary to distinguish exposed energized

electrical conductors and circuit parts from other parts of electric equipment.

(b) The skills and techniques necessary to determine the nominal voltage of

exposed energized electrical conductors and circuit parts.

voltages to which the qualified person will be exposed.

(d) The decision-making process necessary to determine the degree and

extent of the hazard and the PPE and job planning necessary to perform the hierarchy of risk control

methods as outlined in Section 9.

(2) An employee who is undergoing on-the-job training for the purpose of obtaining

the skills and knowledge necessary to be considered a qualified person, and who in the course of

such training, has demonstrated an ability to perform specific duties safely at his/her level of

training, and who is under the direct supervision of a qualified person shall be considered to be a

qualified person for the performance of those specific duties.

e. Unqualified Persons. Unqualified persons shall be trained in and be familiar with, any of

the electrical safety-related practices necessary for their safety.

5. Working On or Near Electrical Conductors or Circuit Parts. Safety-related work practices

shall be used to prevent electric shock or other injuries resulting from either direct or indirect

electrical contacts, when work is being performed on or near equipment or circuits that are or can

become energized. The specific safety-related work practice shall be consistent with the nature and

extent of the associated electric hazards.

a. Live parts to which an employee might be exposed shall be de-energized before an

employee works on or near them, unless the employer can demonstrate that de-energizing introduces

additional or increase hazards or is infeasible due to equipment design or operational limitations.

Live parts that operate at less than 50 volts to ground are not required to be de-energized if there will

be no increased exposure to electrical burns or to explosion due to electric arcs.

(1) Examples of increased or additional hazards include, but are not limited to,

interruption of life support equipment, deactivation of emergency alarm systems, shutdown of

hazardous location ventilation equipment, or removal of illumination for an area.

(2) Examples of work that may be performed on or near energized circuit parts

because of unfeasibility due to equipment design or operational limitations include performing

diagnostics and testing (i.e. start-up or troubleshooting) of electric circuits that can only be performed

with the circuit energized and work on circuits that form an integral part of a continuous industrial

process in a chemical plant that would otherwise need to be completely shut down in order to permit

work on one circuit or piece of equipment.

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b. Only qualified persons shall be permitted to work on electrical equipment that has not been

de-energized. Such persons shall be capable of working safely on energized circuits and shall be

familiar with the proper use of special precautionary techniques, personal protective equipment,

insulating and shielding materials, and insulated tools.

c. Establishing and verifying an electrically safe work condition shall be achieved when

performed in accordance with paragraph 6 and verified by the following process:

(1) Determine all possible sources of electrical supply to the specific equipment.

Check applicable up-to-date drawings, diagrams, and identification tags.

(2) After properly interrupting the load current, open the disconnecting device(s) for

each source.

(3) Wherever possible, visually verify that all blades of the disconnecting devices are

fully open or that drawout-type circuit breakers are withdrawn to the test or fully disconnected

position.

(4) Release stored electrical energy.

(5) Block or relieve stored nonelectrical energy in devices to the extent the circuit

parts cannot be unintentionally energized by such devices.

(6) Apply lockout/tag-out devices in accordance with a documented and

established policy.

(7) Use an adequately rated portable test instrument to test each phase conductor or

circuit part to test for the absence of voltage. Test each phase conductor or circuit part both phase-tophase and phase-to-ground. Before and after each test, determine that the voltage detector is

operating satisfactorily through verification on any known voltage source.

(8) Where the possibility of induced voltages or stored electrical energy exists,

ground all circuit conductors and circuit parts before touching them. Where it could be reasonably

anticipated that the conductors or circuit parts being de-energized could contact other exposed

energized conductors or circuit parts, apply temporary protective grounding equipment rated for the

available fault duty.

6. Establishing an Electrically Safe Work Condition. Each enterprise or department shall

establish, document, and implement a lock-out/tag-out program. The lockout/tagout program shall

specify lockout/tagout procedures to safeguard employees from exposure to electrical hazards. The

lock-out/tag-out program and procedures shall also be applicable to the experience and training of the

employees and conditions as they exist in the workplace, meet the requirements of 6 HCC § 8-5, and

apply to fixed, permanently installed equipment, temporarily installed equipment, and portable

equipment.

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7. Work Involving Electrical Hazards. This section covers requirements for work involving

electrical hazards such as the electrically safety-related work practices, assessments, precautions, and

procedures when an electrically safe work condition cannot be established.

a. Safety-related work practices shall be used to protect employees from injury while they are

exposed to electrical hazards from electrical conductors or circuit parts that are or can become

energized.

b. When energized electrical conductors and circuit parts operating at voltages equal to or

greater than 50 volts are not put into an electrically safe work condition, and work is performed as

permitted, all the following requirements shall apply:

1) Only qualified persons shall be permitted to work on electrical conductors or

circuit parts that have not been put into an electrically safe condition.

2) A shock risk assessment shall be performed as required by this section.

3) An arc flash risk assessment shall be performed as required by this section.

c. Shock Risk Assessment. A shock risk assessment shall be performed to identify shock

hazards, to estimate the likelihood of occurrence of injury or damage to health and the potential

severity of injury or damage to health, and to determine if additional protective measures are

required, including the use of PPE.

(1) Estimate of Likelihood and Severity. The estimate of likelihood of occurrence of

injury or damage to health and the potential severity of injury or damage to health shall take into

consideration the design of the electrical equipment, and the electrical equipment operating condition

and the condition of maintenance. The results of the shock risk assessment shall be documented

(2) Shock Protection Boundaries. The shock protection boundaries identified as

limited approach boundary and restricted approach boundary shall be applicable where employees

are approaching exposed energized electrical conductors or circuit parts. Table I (page 10) shall be

used for the distances associated with various ac system voltages. Table II shall be used for the

distances associated with various dc system voltages.

a. Restricted Approach Boundary. No qualified person shall approach or

take any conductive object closer to exposed energized electrical conductors or circuit parts than the

restricted approach boundary set forth in Table III and Table IV, unless one of the following

conditions applies:

1) The qualified person is insulated or guarded from energized

electrical conductors or circuit parts operating at 50 volts or more. Insulating gloves and sleeves are

considered insulation only with regard to the energized parts upon which work is performed.

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2) The energized electrical conductors or circuit parts are insulated

from the qualified person and from any other conductive object at a different potential.

(3) Limited Approach Boundary.

a. Unqualified person shall not be permitted to approach nearer than the limited

approach boundary of energized conductors and circuit parts.

b. Where one or more unqualified persons are working at or close to the limited

approach boundary, alerting methods (safety signs and tags, barricades, or attendants) shall be

applied to advise the unqualified person(s) of the electrical hazard and warn him or her to stay

outside of the limited approach boundary.

c. Where there is a need for an unqualified person(s) to cross the limited

approach boundary, a qualified person shall advise the unqualified person(s) of the possible hazards

and continuously escort the unqualified person(s) while inside the limited approach boundary. Under

no circumstances shall unqualified person(s) be permitted to cross the restricted approach boundary.

(4) Restricted Approach Boundary. No qualified person shall approach or take any

conductive object closer to live parts nearer than the restricted approach boundary set forth in Table

I (page 12), unless one of the following conditions applies:

(a) The qualified person is insulated or guarded from the live parts (insulating

gloves or insulating gloves and sleeves are considered insulation only with regard to the energized

parts upon which work is being performed), and no insulated part of the qualified person’s body

enters the prohibited space set forth in Table I; or

(b) The live part is insulated from the qualified person and from any other

conductive object at a different potential; or

during live-line bare-hand work.

(5) Arc Flash Risk Assessment.

(a) An arc flash assessment shall be performed to identify arc flash hazards,

to estimate the likelihood of occurrence of injury or damage to health and the potential severity of

injury or damage to health, and to determine if additional protective measures are required,

including the use of PPE.

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(b) The estimate of the likelihood of occurrence of injury or damage to health

and the potential severity of injury or damage to health shall take into consideration the design of the

electrical equipment, including its overcurrent protective device and its operating time; and the

electrical equipment operating condition and condition of maintenance.

implemented according to the hierarchy of risk control. When the additional protective measures

include the use of PPE, the appropriate safety-related work practices, the arc flash boundary, and the

PPE to be used within the arc flash boundary shall be determined.

(d) The results of the arc flash risk assessment shall be documented.

(6) Arc Flash Boundary.

(a) The arc flash boundary shall be the distance at which the incident energy

equals 1.2 cal/cm² (5 J/cm²).

(b) The arc flash boundary shall be permitted to be determined by Table II

[Section 10, paragraph (8)(a)] when the requirements of this table apply.

Table I: Shock Protection Approach Boundaries to Exposed Energized Electrical Conductors

or Circuit Parts for Direct-Current Systems.

(All dimensions are distance from live part to employee.)

(1)

(2)

Limited Approach

Boundary

(3)

Limited Approach

Boundary

Nominal System

Voltage Range,

Phase to Phase

Less than 50 V

50 V to 300 V

301 V to 1 kV

1.1 kV to 5 kV

5 kV to 15 kV

15.1 kV to 45 kV

45.1 kV to 75 kV

75.1 kV to 150 kV

150.1 kV to 250 kV

250.1 kV to 500 kV

500.1 kV to 800 kV

Exposed

Movable

Conductor

Not specified

10 ft 0 in

10 ft 8 in

11 ft 8 in

20 ft 0 in

26 ft 0 in

Exposed

Fixed

Circuit Part

Not specified

3 ft 6 in

5 ft 0 in

8 ft 0 in

10 ft 0 in

11 ft 8 in

20 ft 0 in

26 ft 0 in

(4)

Restricted

Approach

Boundary;

Includes

Inadvertent

Movement

Adder

Not specified

Avoid contact

1 ft 0 in

1 ft 5 in

2 ft 2 in

2 ft 9 in

3 ft 6 in

3 ft 10 in

5 ft 3 in

11 ft 6 in

16 ft 5 in

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(7) Protective Clothing and PPE for Application with an Arc Flash Risk Assessment. Where it has

been determined that work will be performed within the arc flash boundary by paragraph (6) above,

the arc flash risk assessment shall determine, and the enterprise/ department shall document, the

incident energy exposure level of the worker (in calories per square centimeter). This incident energy

exposure level shall be based on the working distance of the employee’s face and chest areas from a

prospective arc source for the specific task to be performed. Arc-rated (AR) Clothing and PPE shall

be used by the employee based upon the incident energy exposure associated with the specific task.

Recognizing that incident energy increases as the distance from the arc flash decreases, additional

PPE shall be used for any parts of the body that are closer than the working distance at which the

incident energy was determined. As an alternative, the PPE requirements of paragraph 10c(8) shall

be permitted to be used in lieu of the detailed arc flash risk assessment approach described in

paragraph (6) above.

8. Work On or Near Uninsulated Overhead Lines.

a. Uninsulated and Energized. Where work is performed in locations containing uninsulated

energized overhead lines that are not guarded or isolated, precautions shall be taken to prevent

employees from contacting such lines directly with any unguarded parts of their body or indirectly

through conductive materials, tools, or equipment. Where the work to be performed is such that

contact with uninsulated energized overhead lines is possible, the lines shall be de-energized and

visibly grounded at the point of work, or suitably guarded.

b. De-energizing or Guarding. If the lines are to be de-energized, arrangements shall be made

with the person or organization that operates or controls the lines to de-energize them and visibly

ground them at the point of work. If arrangements are made to use protective measures, such as

guarding, isolating, or insulation, these precautions shall prevent each employee from contacting

such lines directly with any part of his or her body or indirectly through conductive materials, tools,

or equipment.

c. The enterprise/department and employee shall be responsible to ensure that guards or

protective measures are satisfactory for the conditions. Employees shall comply with established

work methods and the use of protective equipment.

d. Approach Distances for Unqualified Persons. When unqualified employees are working on

the ground or in an elevated position near overhead lines, the location shall be such that the employee

and the longest conductive object the employee might contact cannot come closer to any unguarded,

energized overhead power line than the limited approach boundary in Table I. If the voltage on the

line exceeds 50 kV, the distance shall be 10 ft plus 4 in. for every 10 kV over 50 kV.

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e. Vehicular and Mechanical Equipment.

(1) Where any vehicle or mechanical equipment structure will be elevated near

energized overhead lines, it shall be operated so that the limited approach boundary distance of Table

I, Column 2 is maintained. However, under any of the following conditions, the clearances shall be

permitted to be reduced:

(a) If the vehicle is in transit with its structure lowered, the limited approach

boundary to overhead lines shall be permitted to be reduced by 6 ft.

(b) If insulated barriers, rated for the voltages involved, are installed, and they

are not part of an attachment to the vehicle, the clearance shall be permitted to be reduced to the

design working dimensions of the insulating barrier.

the work is performed by a qualified person, the clearance (between the uninsulated portion of the

aerial lift and the power line) shall be permitted to be reduced to the restricted approach boundary

given in Table I, Column 4.

(2) Employees standing on the ground shall not contact the vehicle or mechanical

equipment or any of its attachments, unless:

(a) The employee is using protective equipment rated for the voltage; or

(b) The equipment is located so that no uninsulated part of its structure (that

portion of the structure that provides a conductive path to employees on the ground) can come closer

to the line than permitted in (a) above.

(3) If any vehicle or mechanical equipment is capable of having parts of its structure

elevated within the limited approach boundary of exposed movable conductors of energized

overhead lines and is intentionally grounded, employees working on the ground near the point of

grounding shall not stand at the grounding location whenever there is a possibility of overhead line

contact. Additional precautions, such as the use of barricades or insulation, shall be taken to protect

employees from hazardous ground potentials (step and touch potential), which can develop within a

few feet or more outward from the grounded point.

9. Electrical Safety Program.

a. Job Briefing.

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(1) Before starting each job each job that involves exposure to electrical hazards, the

employee in charge shall complete a job safety plan and conduct a job briefing with the employees

involved. The briefing shall cover a description of the job and the individual tasks; identification of

the electrical hazards associated with each task; a shock risk assessment in accordance with 7(c)(1)

above for tasks involving a shock hazard; an arc flash risk assessment in accordance with 7(c)(5)

above for tasks involving an arc flash hazard; and work procedures involved, special precautions, and

energy source controls.

(2) If the work or operations to be performed during the workday or shift are

repetitive and similar, at least one job briefing shall be conducted before the start of the first job of

the day or shift. Additional job safety planning and job briefings shall be held if changes that might

affect the safety of the employees occur during the course of the work.

(3) A brief discussion shall be satisfactory if the work involved is routine and if the

employee, by virtue of training and experience, can reasonably be expected to recognize and avoid

the hazards involved in the job. A more extensive discussion shall be conducted if:

(a) The work is complicated or particularly hazardous, or

(b) The employee cannot be expected to recognize and avoid the hazards

involved in the job.

b. Alertness.

(1) Employees shall be instructed to be alert at all times where electrical hazards

might exist.

(2) Employees shall not be permitted to work where electrical hazards exist while

their alertness is recognizably impaired due to illness, fatigue, or other reasons.

c. Blind Reaching. Employees shall be instructed not to reach blindly into areas that might

contain exposed electrical conductors or circuit parts where an electrical hazard exists.

d. Illumination.

(1) Employees shall not enter spaces where electrical hazards exist unless

illumination is provided that enables the employees to perform the work safely.

(2) Where lack of illumination or an obstruction precludes observation of the work to

be performed, employees shall not perform any task where an electrical hazard exists.

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e. Conductive Articles Being Worn. Conductive articles of jewelry and clothing (such as

watchbands, bracelets, rings, key chains, necklaces, metalized aprons, cloth with conductive thread,

metal headgear, or metal frame glasses) shall not be worn within the restricted approach boundary or

where they present an electrical contact hazard with exposed energized electrical conductors or

circuit parts.

f. Conductive Materials, Tools, and Equipment Being Handled.

(1) Conductive materials, tools, and equipment that are in contact with any part of an

employee’s body shall be handled in a manner that prevents unintentional contact with energized

electrical conductors or circuit parts. Such materials and equipment shall include, but are not limited

to, long conductive objects, such as ducts, pipes and tubes, conductive hose and rope, metal-lined

rules and scales, steel tapes, pulling lines, metal scaffold parts, structural members, bull floats, and

chains.

(2) Means shall be employed to ensure that conductive materials approach exposed

energized electrical conductors or circuit parts no closer than that permitted by Table I.

g. Confined or Enclosed Workspaces. When an employee works in a confined or enclosed

space (such as a manhole or vault) where an electrical hazard exists, the employee shall use

protective shields, protective barriers, or insulating materials as necessary to against electrical

hazards. Doors, hinged panels, and the like shall be secured to prevent their swinging into an

employee and causing the employee to contact exposed energized electrical conductors or circuit

parts where an electrical hazard exists if movement of the door, hinged panel, and the like is likely to

create a hazard.

h. Safety Interlocks. Only a qualified person following the requirements for working inside

the restricted approach boundary shall be permitted to defeat or bypass an electrical safety interlock

over which the person has sole control, and then only temporarily while the qualified person is

working on the equipment. The safety interlock system shall be returned to its operable condition

when the work is complete.

i. Housekeeping Duties. Employees shall not perform housekeeping duties inside the limited

approach boundary where there is a possibility of contact with energized electrical conductors or

circuit parts, unless adequate safeguards (such as insulating equipment or barriers) are provided to

prevent contact. Electrically conductive cleaning materials (including conductive solids such as steel

wool, metabolized cloth, and silicon carbide, as well as conductive liquid solution) shall not be used

inside the limited approach boundary unless procedures to prevent electrical contact are followed.

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Occupational Safety and Health Program Act

Electrical Safety

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j. Occasional Use of Flammable Materials. Where flammable materials are present only

occasionally, electric equipment capable of igniting them may not be used, unless measures are taken

to prevent hazardous conditions from developing. Such materials include, but are not limited to

flammable gases, vapors, or liquids; combustible dust; and ignitable fibers or flyings.

k. Overcurrent Protection Modification. Overcurrent protection of circuits and conductors

shall not be modified, even on a temporary basis.

10. Personal and Other Protective Equipment.

a. Employees exposed to electrical hazards when the risk associated with that hazard is not

adequately reduced by the applicable electrical installation requirements shall be provided with, and

shall use, protective equipment that is designed and constructed for the specific part of the body to be

protected and for the work to be performed.

b. Care of Equipment. Protective equipment shall be maintained in a safe, clean, and reliable

condition and in accordance with manufacturers’ instructions. The protective equipment shall be

visually inspected before each use. Protective equipment shall be stored in a manner to prevent

damage from physically damaging conditions and from moisture, dust, and other deteriorating

agents.

c. Personal Protective Equipment.

(1) When an employee is working within the restricted approach boundary, he/she

shall wear PPE in accordance with the shock risk assessment. When an employee is working within

the arc flash boundary, he or she shall wear protective clothing and other PPE in accordance with the

arc flash assessment. All parts of the body inside the arc flash boundary shall be protected.

(2) Employees will wear nonconductive head protection wherever there is a danger of

head injury from electric shock or burns due to contact with energized electrical conductors or circuit

parts or from flying objects resulting from an electrical explosion.

(3) Head, Face, Neck, and Chin Protection. Employees shall wear nonconductive

head protection wherever there is a danger of head injury from electric shock or burns due to contact

with energized electrical conductors or circuit parts or from flying objects resulting from an electrical

explosion. Employees shall wear nonconductive protective equipment for the face, neck, and chin

whenever there is a danger of injury from exposure to electric arcs or flashes or from flying objects

resulting from electrical explosion. If employees wear hairnets or beard nets, or both, these items

shall be arc rated.

(4) Eye Protection. Employees shall wear protective equipment for the eyes whenever

there is danger of injury from electric arcs, flashes, or from flying objects resulting from electrical

explosion.

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Occupational Safety and Health Program Act

Electrical Safety

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(5) Hearing Protection. Employees shall wear hearing protection whenever working

within the arc flash boundary.

(6) Body Protection. Employees shall wear arc-rated clothing wherever there is

possible exposure to an electric arc flash above the threshold incident energy level for a seconddegree burn [1.2 cal/cm² (5 J/cm²)].

(7) Hand and Arm Protection. Employees shall wear rubber insulating gloves with

leather protectors where there is danger of hand injury from electric shock and burns due to

contact with exposed energized electrical conductors or circuit parts. Hand and arm protection

shall be worn where there is possible exposure to arc flash burn.

(8) Foot and Leg Protection. Where insulated footwear is used as protection against

step and touch potential, dielectric overshoes shall be required. Insulated soles shall not be used

as primary electrical protection.

(9) Protective Clothing and PPE.

Table II (page 17) shall be used to determine the required PPE.

(a) Energized parts that operate at less than 50 volts are not required to be deenergized to satisfy an “electrically safe work condition.” Consideration should be given to the

capacity of the source; any overcurrent protection between the energy source and the worker, and

whether the work task related to the source operating at less than 50 volts increases exposure to

electrical burns or to explosion from an electric arc.

(b) Once the Arc Flash PPE Category has been identified, refer to Table III

(page 19). This Table lists the requirements for protective equipment based on Arc Flash Category

numbers 1 – through 4. This clothing and equipment shall be used when working within the Arc

Flash Boundary.

arc flash hazards. While some situations may result in burns to the skin even with the protection

described in Table III, burn injury should be reduced and survivable. Due to the explosive effect of

some arc events, physical trauma injuries may occur. The PPE requirements of this section do not

provide protection against physical trauma other than exposure to the thermal effects of an arc flash.

Ho-Chunk Nation Legislature

Occupational Safety and Health Program Act

Electrical Safety

Page 17 of 26

Table II: Arc Flash PPE Categories for Direct Current (dc) Systems

Equipment

Arc Flash

PPE