Occupational Safety and Health Standards: Electrical, Electric utilization systems.

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Sections 1910.302 through 1910.308 contain design safety standards for electric utilization systems.

1910.302(a)

Scope -

1910.302(a)(1)

Covered. The provisions of 1910.302 through 1910.308 of this subpart cover electrical installations and utilization equipment installed or used within or on buildings, structures, and other premises including:

1910.302(a)(1)(i)

Yards,

1910.302(a)(1)(ii)

Carnivals,

1910.302(a)(1)(iii)

Parking and other lots,

1910.302(a)(1)(iv)

Mobile homes,

1910.302(a)(1)(v)

Recreational vehicles,

1910.302(a)(1)(vi)

Industrial substations,

1910.302(a)(1)(vii)

Conductors that connect the installations to a supply of electricity, and

1910.302(a)(1)(viii)

Other outside conductors on the premises.

..1910.302(a)(2)

1910.302(a)(2)

Not covered. The provisions of 1910.302 through 1910.308 of this subpart do not cover:

1910.302(a)(2)(i)

Installations in ships, watercraft, railway rolling stock, aircraft, or automotive vehicles other than mobile homes and recreational vehicles.

1910.302(a)(2)(ii)

Installations underground in mines.

1910.302(a)(2)(iii)

Installations of railways for generation, transformation, transmission, or distribution of power used exclusively for operation of rolling stock or installations used exclusively for signaling and communication purposes.

1910.302(a)(2)(iv)

Installations of communication equipment under the exclusive control of communication utilities, located outdoors or in building spaces used exclusively for such installations.

1910.302(a)(2)(v)

Installations under the exclusive control of electric utilities for the purpose of communication or metering; or for the generation, control, transformation, transmission, and distribution of electric energy located in buildings used exclusively by utilities for such purposes or located outdoors on property owned or leased by the utility or on public highways, streets, roads, etc., or outdoors by established rights on private property.

..1910.302(b)

1910.302(b)

Extent of application.

1910.302(b)(1)

The requirements contained in the sections listed below shall apply to all electrical installations and utilization equipment, regardless of when they were designed or installed.

Sections:

1910.303(b).................... Examination, installation, and

use of equipment.

1910.303(c).................... Splices.

1910.303(d).................... Arcing parts.

1910.303(e).................... Marking.

1910.303(f).................... Identification of disconnecting means.

1910.303(g)(2)................. Guarding of live parts.

1910.304(e)(1)(i).............. Protection of conductors and equipment.

1910.304(e)(1)(iv)............. Location in or on premises.

1910.304(e)(1)(v).............. Arcing or suddenly moving parts.

1910.304(f)(1)(ii)............. 2-Wire DC systems to be grounded:

1910.304(f)(1)(iii)

and 1910.304(f)(1)(iv)......... AC Systems to be grounded.

1910.304(f)(1)(v).............. AC Systems 50 to 1000 volts not

required to be grounded.

1910.304(f)(3)................. Grounding connections.

1910.304(f)(4)................. Grounding path.

1910.304(f)(5)(iv)(a)

through 1910.304(f)(5)(iv)(d).. Fixed equipment required to be grounded.

1910.304(f)(5)(v).............. Grounding of equipment connected by

cord and plug.

1910.304(f)(5)(vi)............. Grounding of nonelectrical equipment.

1910.304(f)(6)(i).............. Methods of grounding fixed equipment.

1910.305(g)(1)(i)

and 1910.305(g)(1)(ii)......... Flexible cords and cables,uses.

1910.305(g)(1)(iii)............ Flexible cords and cables prohibited.

1910.305(g)(2)(ii)............. Flexible cords and cables, splices.

1910.305(g)(2)(iii)............ Pull at joints and terminals of

flexible cords and cables.

1910.307....................... Hazardous (classified) locations.

1910.302(b)(2)

Every electric utilization system and all utilization equipment installed after March 15, 1972, and every major replacement, modification, repair, or rehabilitation, after March 15, 1972, of any part of any electric utilization system or utilization equipment installed before March 15, 1972, shall comply with the provisions of 1910.302 through 1910.308.

NOTE: "Major replacements, modifications, repairs, or rehabilitations" include work similar to that involved when a new building or facility is built, a new wing is added, or an entire floor is renovated.

1910.302(b)(3)

The following provisions apply to electric utilization systems and utilization equipment installed after April 16, 1981:

1910.303(h)(4) (i) and (ii)... Entrance and access to workspace

(over 600 volts).

1910.304(e)(1)(vi)(b)......... Circuit breakers operated vertically.

1910.304(e)(1)(vi)(c)......... Circuit breakers used as switches.

1910.304(f)(7)(ii)............ Grounding of systems of 1000 volts or

more supplying portable or mobile

equipment.

1910.305(j)(6)(ii)(b)......... Switching series capacitors over

600 volts.

1910.306(c)(2)................ Warning signs for elevators and

escalators.

1910.306(i)................... Electrically controlled irrigation

machines.

1910.306(j)(5)................ Ground-fault circuit interrupters

for fountains.

1910.308(a)(1)(ii)............ Physical protection of conductors

over 600 volts.

1910.308(c)(2)................ Marking of Class 2 and Class 3 power

supplies.

1910.308(d)................... Fire protective signaling circuits.

[46 FR 4056, Jan. 16, 1981; 46 FR 40185, Aug. 7, 1981]

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see also:

Definitions FREE construction accidents OSHA information: Definitions applicable to this subpart.
construction accidents info: Electrical, Definitions applicable to this subpart.

Explanatory Data FREE construction accidents OSHA information: Explanatory Data
construction accidents info: Electrical, Explanatory Data

Authority for 1910 Subpart S FREE construction accidents OSHA information: Authority for 1910 Subpart S
construction accidents info: Electrical, Authority for 1910 Subpart S