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 proper installation of a distribution box involves placing it at the right height to ensure safety and convenience. It also provides specifications for. PCE specialises in the production of CEE industrial plugs and sockets, earthing contact plugs and sockets and supplies a complete range of rubber, metal and plastic distribution boxes. Metal hanging brackets fully enclose for secure pipe / railing mounting Heavy-duty molded rubber enclosure Fully Insulated, Resistant to shock, Impact and corrosion Open-neutral GFCI protection to enhance safety GFCI module with LED beacon to indicate device status Free standing or hanging in use. 4 KV Substation of the ratings indicated above. The body of the boxes shall have sufficient re- enforcement with suitable size of channels keeping a provision for fixin andle conforming to general. NO.