Each sprinkler alarm system, including annunciator, power supply, alarm switches, and bells, must meet Subpart 76.25 of this chapter.
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]
source: CGD 74-125A, 47 FR 15272, Apr. 8, 1982, unless otherwise noted.
cite as: 46 CFR 113.20-1