> One day I plugged it in via an RCD > Adaptor, which tripped instantly. Got out my trusty multimeter and > measured the leakage to Earth: 1.8Amps! I > disconnected the run to the garage and it was OK thereafter, but it just > shows how much leakage you can get if > there isn't an RCD to detect it. Nowhere enough to blow a fuse or MCB, OK, help me out here, I'm in the USA and our acronyms are different. RCD = Residual Current Detector? Would that be the same as our GFI (Ground Fault Interrupter)? MCB = Master Circuit Breaker? Mechanical Circuit Breaker? Cheerful regards, Bob -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist