33 CFR § 127.107 - Electrical power systems.

---
identifier: "/us/cfr/t33/s127.107"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 127.107 - Electrical power systems."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "127.107"
section_name: "Electrical power systems."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "L"
subchapter_name: "WATERFRONT FACILITIES"
part_number: "127"
part_name: "WATERFRONT FACILITIES HANDLING LIQUEFIED NATURAL GAS AND LIQUEFIED HAZARDOUS GAS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1504(j)(2); 46 U.S.C. 70011 and 70034; 46 U.S.C. Chapter 701; DHS Delegation No. 00170.1, Revision No. 01.2, paragraph (II)(92)(a)."
regulatory_source: "CGD 78-038, 53 FR 3376, Feb. 7, 1988, unless otherwise noted."
cfr_part: "127"
---


# 127.107 Electrical power systems.

(a) The electrical power system must have a power source and a separate emergency power source, so that failure of one source does not affect the capability of the other source. The system must meet NFPA 70 (incorporated by reference, see § 127.003).

(b) The emergency power source must provide enough power for the operation of the—

(1) Emergency shutdown system;

(2) Communications equipment;

(3) Firefighting equipment; and

(4) Emergency lighting.

(c) If an auxiliary generator is used as an emergency power source, it must meet Section 700.12 of NFPA 70 (incorporated by reference, see § 127.003).

[CGD 78-038, 53 FR 3376, Feb. 7, 1988, as amended by USCG-2019-0444, 87 FR 5690, Feb. 2, 2022]