U.S. Code of Federal Regulations

Regulations most recently checked for updates: Mar 26, 2026

All TitlesTitle 30Chapter IPart 57Subpart K - Subpart K—Electricity

SURFACE AND UNDERGROUND
§ 57.12001 - Circuit overload protection.
§ 57.12002 - Controls and switches.
§ 57.12003 - Trailing cable overload protection.
§ 57.12004 - Electrical conductors.
§ 57.12005 - Protection of power conductors from mobile equipment.
§ 57.12006 - Distribution boxes.
§ 57.12007 - Junction box connection procedures.
§ 57.12008 - Insulation and fittings for power wires and cables.
§ 57.12010 - Isolation or insulation of communication conductors.
§ 57.12011 - High-potential electrical conductors.
§ 57.12012 - Bare signal wires.
§ 57.12013 - Splices and repairs of power cables.
§ 57.12014 - Handling energized power cables.
§ 57.12016 - Work on electrically-powered equipment.
§ 57.12017 - Work on power circuits.
§ 57.12018 - Identification of power switches.
§ 57.12019 - Access to stationary electrical equipment or switchgear.
§ 57.12020 - Protection of persons at switchgear.
§ 57.12021 - Danger signs.
§ 57.12022 - Authorized persons at major electrical installations.
§ 57.12023 - Guarding electrical connections and resistor grids.
§ 57.12025 - Grounding circuit enclosures.
§ 57.12026 - Grounding transformer and switchgear enclosures.
§ 57.12027 - Grounding mobile equipment.
§ 57.12028 - Testing grounding systems.
§ 57.12030 - Correction of dangerous conditions.
§ 57.12032 - Inspection and cover plates.
§ 57.12033 - Hand-held electric tools.
§ 57.12034 - Guarding around lights.
§ 57.12035 - Weatherproof lamp sockets.
§ 57.12036 - Fuse removal or replacement.
§ 57.12037 - Fuses in high-potential circuits.
§ 57.12038 - Attachment of trailing cables.
§ 57.12039 - Protection of surplus trailing cables.
§ 57.12040 - Installation of operating controls.
§ 57.12041 - Design of switches and starting boxes.
§ 57.12042 - Track bonding.
§ 57.12045 - Overhead powerlines.
§ 57.12047 - Guy wires.
§ 57.12048 - Communication conductors on power poles.
§ 57.12050 - Installation of trolley wires.
§ 57.12053 - Circuits powered from trolley wires.

SURFACE ONLY
§ 57.12065 - Short circuit and lightning protection.
§ 57.12066 - Guarding trolley wires and bare powerlines.
§ 57.12067 - Installation of transformers.
§ 57.12068 - Locking transformer enclosures.
§ 57.12069 - Lightning protection for telephone wires and ungrounded conductors.
§ 57.12071 - Movement or operation of equipment near high-voltage powerlines.

UNDERGROUND ONLY
§ 57.12080 - Bare conductor guards.
§ 57.12081 - Bonding metal pipelines to ground return circuits.
§ 57.12082 - Isolation of powerlines.
§ 57.12083 - Support of power cables in shafts and boreholes.
§ 57.12084 - Branch circuit disconnecting devices.
§ 57.12085 - Transformer stations.
§ 57.12086 - Location of trolley wire.
§ 57.12088 - Splicing trailing cables.
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