30 CFR Topic
Underground Only
July 29, 2020
§
57.12085
Transformer stations
§
57.12084
Branch circuit disconnecting devices
§
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
§
57.12086
Location of trolley wire
§
57.12088
Splicing trailing cables