I believe 'standard' fuses are designed to blow in around one second at 100% overload. At 50% overload, an hour or two - ish. Back at school in the 1970's, "someone" rewired the 100A fuse controlling
The ceramic fuses in 13A plug tops usually have a 100% overload capabiliy, this was also the case for some of the BT fuses. Ken de M0KHW -- Original Message -- From: [email protected] mal hamilto