Wall-mounted boxes should be 4. This height makes it easy to reach without bending or stretching. Ground-mounted boxes should be raised 2 to 4 inches to avoid. The proper installation of a distribution box involves placing it at the right height to ensure safety and convenience. 7m away from the ground, the installation height of the control box is 1. Check for proper IP/NEMA ratings and material quality. It describes HA, HK, and LGD series boxes with dimensions ranging from 100-415mm in length, 105-323mm in width, and 75-140mm in height. The rule dictates that the center of the grip of the operating handle for the highest circuit breaker must not be more than 2. 0 meters (6 feet, 7 inches) above the floor or a.