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]
Subpart 113.25_General Emergency Alarm Systems
Editorial Note: Nomenclature changes to subpart 113.25 of part 113 appear by CGD-94-108, 61 FR 28288, June 4, 1996.