Is it possible that there is a 220 volts but low current?

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SUMMARY

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.

PREREQUISITES
  • Understanding of electrical circuits and open circuit conditions
  • Knowledge of residential electrical service configurations, particularly 2-phase systems
  • Familiarity with backup generator operation and connection methods
  • Awareness of "Anti-Islanding" safety protocols
NEXT STEPS
  • Research the specifications and operation of your specific backup generator model
  • Learn about residential electrical service configurations in your country
  • Investigate the requirements for installing an "Anti-Islanding" switchover circuit
  • Explore troubleshooting techniques for diagnosing open circuit issues in home electrical systems
USEFUL FOR

Homeowners, electricians, and technicians dealing with backup generators and residential electrical systems will benefit from this discussion.

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.
 
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To answer the question in your title line, yes, you can have 220 v potential but no current. This is simply an open circuit situation.
 
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.
Welcome to the PF.

We need more details in order to be of help. What country are you in? What is the electrical service to your house? For example, here in the US it is commonly 2-phase, with 240V between the outer phases and 120V from each phase to Neutral. Is that what your house is fed from the distribution pole outside?

And what kind of generator do you have? Can you post a link to the datasheet or description? How do you connect the generator to your house? Do you have an approved "Anti-Islanding" switchover circuit? https://en.wikipedia.org/wiki/Islanding
 
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