Collapse to view only § 113.20-3 - Connection boxes.
§ 113.20-1 - Sprinkler alarm system.
Each sprinkler alarm system, including annunciator, power supply, alarm switches, and bells, must meet Subpart 76.25 of this chapter.
§ 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.