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Mains electricity, typically a higher voltage AC waveform used to deliver electrical power to households. In North America 120V, 60Hz, in most European countries 230V, 50Hz. What most people will plug appliances into.

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Acceptable resistance between hot (mains) and ground (earth)?

A DIY project I'm working on uses electronics embedded in concrete, including 110V AC heating elements. As I was verifying my wiring before testing the device I was surprised to discover conductivity …
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