Table 2-2. OSHA regulations that apply to those electrical installations only if they were designed and installed after April 16, 1981

DOE-HDBK-1092-98

See Table 2-2 for a list of the sections and regulations that apply to electrical installations and

equipment installed after April 16, 1981.

Table 2-2. OSHA regulations that apply to those electrical installations only if they were designed

and installed after April 16, 1981.

29 CFR 1910

1996 NEC

Subject

.303(h)(4)(i);(ii)

110-33(a),(b)

Entrance and access to workspace over 600 V

.304(e)(1)(vi)(B)

240-81

Circuit breakers operated vertically

.304(e)(1)(vi)(C)

240-83(d)

Circuit breakers used as switches

.304(f)(7)(ii)

250-154

Grounding of systems of 1,000 V or more

supplying portable or mobile equipment

.305(j)(6)(ii)(B)

460-24

Switching series capacitors over 600 V

.306(c)(2)

620-51,(d) 620-52(b)

Warning signs for elevators and escalators

.306(i)

675-8, 675-15

Electrically controlled irrigation machines

.306(j)(5)

680-51(a)

Ground-fault circuit interrupters for decorative

fountains

.308(a)(1)(ii)

710-4(b)(i)

Physical protection of conductors over 600 V

.308(c)(2)

725-41

Marking of Class 2 and Class 3 power supplies

.308(d)

760-1

Fire-protective signaling circuits

2.5 APPROVAL OF ELECTRICAL EQUIPMENT

All electrical equipment, components, and conductors shall be approved for their intended uses, as

follows:

1. If equipment is of a kind that no nationally recognized testing laboratory (NRTL) accepts,

certifies, lists, labels, or determines to be safe, it may be inspected or tested by another Federal

agency or by a state, municipal, or other local authority responsible for enforcing the National

Electrical Code (NEC), and found to comply with the provisions of the NEC. (See NEC

Section 110-3.)

2. Equipment can be approved if it is built, designed, and tested according to specific nationally

recognized standards such as UL 508 or one of the ANSI C series and is determined by the

AHJ to be safe for its intended use.

3. If a particular piece of equipment is of a type not included in 1 or 2 above, the equipment shall

be evaluated by the AHJ. If the equipment is approved by the AHJ, there shall be documentation

of the evaluation and approval on file for this equipment.

Simply stated, if any electrical system component is of a kind that any NRTL accepts, certifies,

lists, or labels, then only NRTL accepted, certified, listed, or labeled components can be used.

A nonlisted, nonlabeled, noncertified component may be used if it is of a kind that no NRTL

covers, and then it shall be tested or inspected by the local authority responsible for enforcing

2-6