My house has a spur into the garage. It was installed from new (2000) by the builders. There is a simple fuse box in the garage with one mains fuse and one lighting fuse. They are protected by an 80amp RCD on the mains circuit on the house consumer unit. What will be the maximum wattage I can use on the spur? There is a single fridge and a chest freezer in the garage and I have just installed 2x 30 watt LED spotlights. I want to use a few electrical items (not at the same time) in the garage, eg pillar drill, router, circular saw and also use a heater on the cooler days. The heater would be maximum 1.5kw, but probably use no more than 500 w. I could fit a new small consumer unit in the garage, so would a 30 amp fuse be okay. The cable is 2.5mm and 1.5mm for the lighting, in the garage.
Sorry about my terminology, probably has something to do with me not being an Electrician. The Fuse box in the garage is the old kind that has fuse wire between two screw terminals. These fuses then push into an oblong socket. The garage is 4 mtrs from the house. The cable is attached to a fused socket on the lounge wall, passes through into a metal box on the outside wall, then into conduit that goes underground and enters the garage a similar way. The cable is either armoured or in a sheath. it is black and measures approx 12mm in diameter. This cable then goes behind a wooden board and into the fuse box. I can take photos but it will have to wait until daylight. Thanks for your reply.
Thank's Mrsmith. That would probably be why one of the MCB's that has 'sockets' written above it, does not turn any sockets off, only the one that has a 32a MCB, itself attached to the 80a RCD. This one turns all the sockets off. It would not surprise me, with the builders of this house, as It has no insulation in the cavity either, just a bit of glass fibre roof insulation, in the walls, in the porch, obviously to show the Building inspector.
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