Quote:
Originally Posted by dad911
Bet you found quite a few pennies behind the fuses 
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The fuses for the 220 appliances were cartridge fuses in a tandem socket. But yes, I have seen some creative engineering in fuse panels.
I found a lot of blown screw-in fuses being due to the screw that holds the socket together and is the center contact for the fuse. When the screw gets loose they cause the connection to overheat and melt the fuse link.