Square D Interlock
thingiverse
This 3D printed Square D Interlock lets you safely use a generator to power your home during utility outages by limiting the power supplied to the circuit panel to just one source - Utility Power OR Generator Power. Designed for Square D breaker panels, this interlock can be adapted to work on most circuit breakers. Its simple concept requires that the main breaker must be switched off before switching on the Auxiliary breaker connected to Backup Power (generator). The interlock prevents both sources from powering the circuit panel at the same time.
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