Ian
I've never seen a 100A Zinsco "skinny" breaker.. I think they went up to 60A. (Not that I have any faith a Zinsco 60 would trip at 100A anyways 
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LoL Rollie.... Don't forget, we had Sierra electric until P&S bought and axed them... Also Lest we forget what hath the east coast bestowed upon us, FPE be thine headache. FPE never was that popular here,plenty of Zinsco/Sylvania/Challanger though, and I do miss Sierra wallplates.....
