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29 CFR 1910.304: Grounding and circuit protection

Subpart S—Electrical · official heading: Wiring design and protection

Grounding, correct polarity, overcurrent protection and labeled disconnects for electrical systems in general industry.

6,333citations since 2015
5,561employers cited
75%serious, willful or repeat
$0median penalty per item

OSHA has cited 29 CFR 1910.304 6,333 times since 2015, against 5,561 employers. Penalties on these items add up to $7,146,828 at their current amounts.

Citations per year

The parts of the rule cited most

1910.304(g)(5) · 3,209 citations

(5) Grounding path. The path to ground from circuits, equipment, and enclosures shall be permanent, continuous, and effective.

1910.304(f)(1)(iv) · 775 citations

(iv) Overcurrent devices shall be readily accessible to each employee or authorized building management personnel. These overcurrent devices may not be located where they will be exposed to physical damage or in the vicinity of easily ignitable material.

1910.304(b)(3)(i) · 398 citations

(3) Ground-fault circuit interrupter protection for personnel. (i) All 125-volt, single-phase, 15- and 20-ampere receptacles installed in bathrooms or on rooftops shall have ground-fault circuit-interrupter protection for personnel.

1910.304(a)(2) · 328 citations

(2) Polarity of connections. No grounded conductor may be attached to any terminal or lead so as to reverse designated polarity.

1910.304(b)(4) · 243 citations

(4) Outlet devices. Outlet devices shall have an ampere rating not less than the load to be served and shall comply with the following provisions:

1910.304(b)(4)(iib) · 225 citations

(B) Where connected to a branch circuit supplying two or more receptacles or outlets, a receptacle may not supply a total cord- and plug-connected load in excess of the maximum specified in Table S-4; and

1910.304(f)(1)(viii) · 141 citations

(viii) Circuit breakers used as switches in 120-volt and 277-volt, fluorescent lighting circuits shall be listed and marked “SWD.”

1910.304(b)(2)(ii) · 136 citations

(ii) Receptacles and cord connectors having grounding contacts shall have those contacts effectively grounded except for receptacles mounted on portable and vehicle-mounted generators in accordance with paragraph (g)(3) of this section and replacement receptacles installed in accordance with paragraph (b)(2)(iv) of this section.

Industries cited most

  • Manufacturing 1,858
  • Public Administration 748
  • Retail Trade 485
  • Educational Services 418
  • Construction 400
  • Transportation and Warehousing 322

States cited most

Recently cited employers