Forum Discussion
ken_burke
Sep 19, 2013Explorer
mpcarr wrote:
tcamper - Keep in mind that the plug-in meter checks for 120 volts. Your 50 amp service has basically two 120 volt feeds when referenced to neutral. Wall outlets are wired from either of two 120 legs of a 240 supply. If you just plugged your meter into one outlet you are only checking one side of the electrical feed. It doesn't tell you anything about the other side of the supply feed and your AC might be connected to that side. Problems with the distribution panel, connectors, or extension cables can cause low or missing voltages on one side of the supply.
If you know what side of 240 you AC's 120 volt leg is supplied from you can just check that side but I recommend checking both to make sure you get the right side. AC if you happen to take the covers off.
Mike
Can you be more specific as to how to check each side?
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