46 C.F.R. § 113.20-3
Current through May 31, 2024
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.
46 C.F.R. §113.20-3