12 ms·
The document is from 1944. I believe that breakers were only an innovation in the last 30-40 years. Fuses would have been used instead.
by xattt 7y ago
The document is from 1944. I believe that breakers were only an innovation in the last 30-40 years. Fuses would have been used instead.
- serf 7y agomodern breakers are from the 20s, the originals are from the 1879. https://en.wikipedia.org/wiki/Circuit_breaker https://en.wikipedia.org/wiki/Circuit_breaker
- TeMPOraL 7y agoInteresting. Living in Poland, I only remember seeing fuses in apartment buildings; circuit breakers started to show up everywhere only around the early 2000s.
- xattt 7y agoI tried searching, but couldn’t find details when they became an National Electrical Code requirement. I’ve lived in a 1980s construction building where there was still a fuse box. (Most of the results I came across were around the recent AFCI requirement for breakers in residential construction.)