COMPLIANCE RESOURCE CENTER

§  1910.302  Electric utilization systems.

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

(a) Scope -- (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:

(i) Yards,

(ii) Carnivals,

(iii) Parking and other lots,

(iv) Mobile homes,

(v) Recreational vehicles,

(vi) Industrial substations,

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

(viii) Other outside conductors on the premises.

(2) Not covered. The provisions of §§  1910.302 through 1910.308 of this subpart do not cover:

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

(ii) Installations underground in mines.

(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.

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

(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.

(b) Extent of application. (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)(l)(  Protection of conductors and
      i)          equipment.
1910.304(e)(l)(  Location in or on premises.
     iv)
1910.304(e)(l)(  Arcing or suddenly moving parts.
      v)
1910.304(f)(l)(  2-Wire DC systems to be grounded:
     ii)
1910.304(f)(l)(  AC Systems to be grounded.
 iii) and
 1910.304(f)(l)
    (iv)
1910.304(f)(l)(  AC Systems 50 to 1000 volts not
      v)          required to be grounded.
1910.304(f)(3)   Grounding connections.
1910.304(f)(4)   Grounding path.
1910.304(f)(5)(  Fixed equipment required to be
 iv)(a) through   grounded.
 1910.304(f)(5)
 (iv)(d)
1910.304(f)(5)(  Grounding of equipment connected
      v)          by cord and plug.
1910.304(f)(5)(  Grounding of nonelectrical
     vi)          equipment.
1910.304(f)(6)(  Methods of grounding fixed
      i)          equipment.
1910.305(g)(l)(  Flexible cords and cables, uses.
  i) and
 1910.305(g)(1)
    (ii)
1910.305(g)(l)(  Flexible cords and cables
    iii)          prohibited.
1910.305(g)(2)(  Flexible cords and cables,
     ii)          splices.
1910.305(g)(2)(  Pull at joints and terminals of
    iii)          flexible cords and cables.
1910.307         Hazardous (classified) locations.
 

(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.

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

 
 
 
Sec. 1910.303(h  Entrance and access to workspace
 )(4) (i) and     (over 600 volts).
    (ii)
Sec. 1910.304(e  Circuit breakers operated
 )(1)(vi)(b)      vertically.
Sec. 1910.304(e  Circuit breakers used as
 )(1)(vi)(c)      switches.
Sec. 1910.304(f  Grounding of systems of 1000
 )(7)(ii)         volts or more supplying portable
                  or mobile equipment.
Sec. 1910.305(j  Switching series capacitors over
 )(6)(ii)(b)      600 volts.
Sec. 1910.306(c  Warning signs for elevators and
    )(2)          escalators.
Sec. 1910.306(i  Electrically controlled
       )          irrigation machines.
Sec. 1910.306(j  Ground-fault circuit interrupters
    )(5)          for fountains.
Sec. 1910.308(a  Physical protection of conductors
 )(1)(ii)         over 600 volts.
Sec. 1910.308(c  Marking of Class 2 and Class 3
    )(2)          power supplies.
Sec. 1910.308(d  Fire protective signaling
       )          circuits.
 

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