46 CFR § 113.20-3 - Connection boxes.

---
identifier: "/us/cfr/t46/s113.20-3"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 113.20-3 - Connection boxes."
title_number: 46
title_name: "Shipping"
section_number: "113.20-3"
section_name: "Connection boxes."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "J"
subchapter_name: "ELECTRICAL ENGINEERING"
part_number: "113"
part_name: "COMMUNICATION AND ALARM SYSTEMS AND EQUIPMENT"
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 15272, Apr. 8, 1982, unless otherwise noted."
cfr_part: "113"
---


# 113.20-3 Connection boxes.

Each connection box and each switch enclosure in an automatic sprinkler system must be constructed in accordance with Type 4 or 4X of NEMA 250 or IP 56 of IEC 60529:2013 (both incorporated by reference; see 46 CFR 110.10-1) requirements.

[USCG-2003-16630, 73 FR 65201, Oct. 31, 2008, as amended by USCG-2020-0075, 88 FR 16369, Mar. 16, 2023]