The main switchboard of fire

Switchboard fire main reasons: the distribution panel wiring and electrical, instrumentation and other contacts is not strong, resulting in excessive contact resistance; switches, fuses,  Voltage stabilizer  selection and distribution panel does not match the actual capacity; Long-term overload operation; fuses fuse choose not to meet the requirements; distribution panel switch fuse blow when pulling timeliness or sparks and arcing, etc.
Prevention switchboard fire  circuit breakers  are: power strip metal frame, iron disk and the disk device metal casing should be well grounded, grounding resistance of less than 4 ohms;  Air circuit breaker  wiring should be insulated wire, and should prevent a wrong, fumbled and poor contact; switchboard various knife and mounted on the circuit breaker, when in the off state, the blade and the movable portion are not charged;