Use your generator to power your home! This Briggs & Stratton Power Transfer Switch, which must be installed by a qualified electrician, will enable you to have instant power in the event of mains power failure. Specification: The BST9200M Power Transfer Switch is suitable for generators up to 9200 watts (40 Amps, 230 Volts ). Change over switch: 100 Amps. Residual Current Device (RCD ): 30 Amps, 40 Amps Enclosure: Polystyrene. Auxiliary outlet: 1 x domestic socket. Auxiliary outlet fuse: 10 Amps Dimensions: 250 x 190 x 135 mm (width x height x depth ). This unit must be installed by a qualified electrician