Mike Lamb Posted April 14, 2016 Report Share Posted April 14, 2016 This was the electric panel for a large 1951 or 1957 condo ? the age is little fuzzy ? building. There is a switch next to a fuse. I know the fuses killed power to the condo unit but I did not mess with the switches to see what they do. This probably also opens the circuit? What is the sense of that? Anybody familiar at all? Click to Enlarge 83.43 KB Click to Enlarge 56.19 KB Click to Enlarge 40.6 KB Quote Link to comment Share on other sites More sharing options...
John Kogel Posted April 14, 2016 Report Share Posted April 14, 2016 I think we are looking at fused disconnects. Quote Link to comment Share on other sites More sharing options...
Marc Posted April 14, 2016 Report Share Posted April 14, 2016 I think we are looking at fused disconnects. That's my swag. Immediate predecessor to thermal magnetic breakers? Marc Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted April 14, 2016 Report Share Posted April 14, 2016 I think we are looking at fused disconnects. Exactly. The switches turn power to each circuit on and off and the fuses provide overcurrent protection. We're so used to circuit breakers that do both things that we forget that wasn't always the case. Quote Link to comment Share on other sites More sharing options...
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