120 volt drop
I purchased a plug in voltmeter for use while in RV parks to see if I need to buy an autoformer to control low voltage feeds. While plugged into 30 amp service at my house, I checked it and it was 121v. My wife kicked on the A/C and it dropped to 113v. Today I tried it again and started at 122v, then A/C on it went to 117v. Then I also started the microwave and it dropped to 113v. Is this normal?
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