Posted by John T on December 14, 2022 at 06:40:34 from (107.77.215.169):
In Reply to: Re: Electrical posted by BarnyardEngineering on December 14, 2022 at 05:18:47:
You ask What I don't understand is how they could have come loose. This house is stationary right? Once the screw is smoked down it should stay smoked down, and the wire is solid copper so once it's bent into place it should stay there.
In my many years in power distribution I saw it happen more than once !!!!!!!! Temperature changes, vibration (albeit it small), perhaps NOT properly torqued in the first place, expansion and contraction can all contribute to screws coming loose grrrrrrrrrrrrrrr As part of some routine annual maintenance in some instances I instructed my electricians to check all panel connections and exercise each circuit breaker. If two 120 VAC loads are in series across L1 and L2 240 Volts but theres no attached Neutral the voltage across each appliance will be proportional to its resistance which can result in severe imbalance, excess high voltage and damage !!!!!!!!
Best wishes hope this helps Merry CHRISTmas
John T Long retired and rusty EE but believe this still true
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