---
kind: "section"
citation: "46 C.F.R. § 143.400"
title: "46"
number: "143.400"
heading: "Electrical systems, general."
url: "https://uscodex.org/cfr/46/143.400"
---

# §143.400. Electrical systems, general.

- (a) Electrical systems and equipment must function properly and minimize system failures and fire and shock hazards.
- (b) Installed electrical power source(s) must be capable of carrying the electrical load of the towing vessel under normal operating conditions.
- (c) Electrical equipment must be marked with its respective current and voltage ratings.
- (d) Individual circuit breakers on switchboards and distribution panels must be labeled with a description of the loads they serve.
- (e) Electrical connections must be suitably installed to prevent them from coming loose through vibration or accidental contact.
- (f) Electrical equipment and electrical cables must be suitably protected from wet and corrosive environments.
- (g) Electrical components that pose an electrical hazard must be in an enclosure.
- (h) Electrical conductors passing though watertight bulkheads must be installed so that the bulkhead remains watertight.
- (i) The connections of flexible cable plugs and socket outlets must be designed to prevent unintended separation.

## Notes

### Authority

Authority: 46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 CFR 1.05; DHS Delegation No. 0170.1.

### Source

Source: USCG-2006-24412, 81 FR 40101, June 20, 2016, unless otherwise noted.