acb installation secure connections reliable installation maintenance work acb manually acb choose required tools safe operation installation operation ensure smooth ensure safety acbs contributing closing speeds manufacturers instructions auxiliary devices prevent damage mounting hardware equipment gather altitude prepare temperature humidity environmental factors application requirements specific requirements application determine comprehensive overview vital components top company system operation electrical system relevant standards protection functions grounding conductors main grounding system relevant safety regulations prevent electrical shocks time delays verify correct operation check access wiring connect safety glasses gloves appropriately sized conductors desired protection parameters protection features select outgoing power cables iec ansi evaluate site evaluation assess overloads short circuits