Electronics > Power/Renewable Energy/EV's

Can an AC motor plugged into same wall outlet damage sensitive electronics ?

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floobydust:
If it's a raw A/C compressor motor and 2-pole contactor, that can make the nastiest local transients. I find there is generator action due to the motor's remanence and kick back due to the mechanical load when it switches off, the spike can be huge and even make it past the distribution panel. I had some sites that were problematic and used a Dranetz power quality analyzers to figure that out.

I found best is RC snubbers at the transient source, across the A/C's contactor contacts. MOV's would also work. It also gives longer life to the contactor (less arcing) and less stress for the motor's insulation, not dealing with a many kV spike.

rpiloverbd:
Depends on how well those 'sensitive' electronic devices were made.

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