The earth wire is at zero volts as it only carries a current if there is a fault. JAMES: And finally, the blue wire is called a neutral wire. ELLIE: Which you can remember by thinking about how a ...
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Understanding Electrical Wire Color Codes“Black wires are most used as ‘hot’ wires in residential systems,” says master electrician Allyson Saling with Frontdoor home services app. “Hot or ‘live’ wires carry 120 volts ...
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