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What is the potential difference between earth wire and live wire?
Wiki User
∙ 11y ago
In formal electrical jargon, "potential difference" describes voltage. So a 120 V live wire should have a 120 V potential to the earth wire.
AnswerIt depends where you live. In Europe, the nominal potential difference between a line and earth conductor is approx 230 V (approximately, because earth potential might be a little lower than the neutral potential); for North America, the nominal potential difference is about 120 V.
Wiki User
∙ 11y ago
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You are presumably describing those linesmen who work on live transmission lines while being suspended or while sitting on helicopters? For current to pass through the body, there must be a difference in potential across different parts of the body. If (just like a bird) a linesman is connected to a line conductor, his body assumes the same potential as that line -no potential difference, no current.
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