46 CFR § 112.40-1 - General requirements.

---
identifier: "/us/cfr/t46/s112.40-1"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 112.40-1 - General requirements."
title_number: 46
title_name: "Shipping"
section_number: "112.40-1"
section_name: "General requirements."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "J"
subchapter_name: "ELECTRICAL ENGINEERING"
part_number: "112"
part_name: "EMERGENCY LIGHTING AND POWER SYSTEMS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 3306, 3703; DHS Delegation No. 00170.1, Revision No. 01.2."
regulatory_source: "CGD 74-125A, 47 FR 15267, Apr. 8, 1982, unless otherwise noted."
cfr_part: "112"
---


# 112.40-1 General requirements.

Installations requiring alternating current for the operation of communication equipment or other apparatus essential under temporary emergency conditions must be provided with the necessary conversion equipment. If the conversion equipment operates both under normal conditions and under temporary emergency conditions, the conversion equipment must be provided in duplicate.