I've followed all the advice I've received here and from other sources - what do I do next? (other than the obvious - call an electrician!)
I have one 20 amp screw-in fuse that blows.
So far, I have done the following:
Physically disconnected all the solid copper wires that I can identify as being on the circuit. A digital multimeter still shows between 0 and 3 ohms between the live and common (black and white) wires, unless the device is out of the circuit by up-circuit disconnections. (50 year old house - no ground.)
Removed the live wire from the fuse block - I was told that it the fuse still blows, I have a bad fuse block - it doesn't.
Compared voltage and resistance between this circuit and a known good circuit in the fuse box - similar.
Now I'm stuck. What else can I check?
Thanks in advance,