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--- Answer --- Most likely the plug is connected wrong, instead of the connecting to the power lines it was connected in series with some lights with 3 times the wattage. When using the meter it will read the potential voltage which is the line voltage of 115 volts but when you plug in the a light, now you completed the circuit adding this light to the other light/s. The reason you get 25 volts is because you are reading the voltage drop of the light that you just pluged in. Where 25 volts? Because the other lights are 3 times higher in wattage give or take. from: bmetong

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โˆ™ 2006-04-13 09:33:35
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Q: What is the problem if the receptacle has 120V on a volt meter but when you plug in a light in the socket the volt meter drops to 25V?
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