Subjgrp 185. 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.