U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 28, 2020

§ 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 (both incorporated by reference; see 46 CFR 110.10-1) requirements.

[USCG-2003-16630, 73 FR 65201, Oct. 31, 2008]