Fire Rated Enclosures | Fire Resistant Junction Boxes Fire Rated & Resistant Electrical Enclosures & Junction Boxes. Fire resistant enclosures and junction boxes are used to maintain electrical and electronic circuit integrity to emergency lighting, power and control cables in both “safe” non-hazardous and also hazardous area locations. T&D can provide pre-assembled (Abtech BPGF).. Electrical consumer unit and distribution board fire Application Instructions. The Intumescent Electrical Consumer Unit Fire Protection System simply. fits over the existing unit and is then fixed with screws. Small holes can be made in the. frame to allow for conduits or ducting. In the event of a fire the intumescent material. will fill these gaps for complete fire protection.