Sevs evans
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I read at the power outlet,the meter detect 220 volts but the split type AC doesn't work.it happens when I used the back up generator.
The discussion confirms that it is possible to measure 220 volts at a power outlet without current flow, indicating an open circuit condition. This situation often arises when using a backup generator, which may not be properly connected or compatible with the electrical service of the house. Participants emphasize the importance of understanding the electrical service configuration, such as the common 2-phase system in the US, and the need for an approved "Anti-Islanding" switchover circuit to ensure safe operation.
PREREQUISITESHomeowners, electricians, and technicians dealing with backup generators and residential electrical systems will benefit from this discussion.
Welcome to the PF.Sevs evans said:I read at the power outlet,the meter detect 220 volts but the split type AC doesn't work.it happens when I used the back up generator.