According to the "Code for Acceptance of Construction Quality of Building Electrical Engineering" GB50303-2002, the vertical distance between the bottom surface of the fixed stainless steel enclosure ip67 and the ground should be greater than 1. Ensure safe placement: install in dry, accessible areas with good ventilation and at appropriate height (typically ~1. Practice good wiring: secure grounding, neat cable management, proper insulation, and correct wire gauge and breaker size. Include protection devices like breakers, fuses, and. Sections 1926. 408 contain installation safety requirements for electrical equipment and installations used to provide electric power and light at the jobsite. aspx?cite=296-155to find the official and most up-to-date, legal version of L&I Division of Occupational Safety & Health (DOSH) rules. Safety Standards for Construction Work Chapter 296-155 WAC Last Update: December 5, 2025 This book contains General Safety and Health. (a) Pull boxes shall be made of material inherently resistant to corrosion or shall be suitably protected, both internally and externally, by enameling, galvanizing, plating, or other equivalent means. (b) Suitable bushings, shields, or fittings having smooth rounded edges shall be provided where.