46 C.F.R. § 113.10-7 Connection boxes.
Title 46 - Shipping
Each connection box must be constructed in accordance with NEMA 250 Type 4 or 4X or IEC IP 56 requirements. [CGD 94–108, 61 FR 28288, June 4, 1996, as amended at 62 FR 23910, May 1, 1997]
Title 46: Shipping
PART 113—COMMUNICATION AND ALARM SYSTEMS AND EQUIPMENT
Subpart 113.10—Fire and Smoke Detecting and Alarm Systems
§ 113.10-7 Connection boxes.

