Reply to post: Re: never seems to taste the same?

Why are sat-nav walking directions always so hopeless?


Re: never seems to taste the same?

"kettle is a resistive load so doesn't need overload protection"

Some electrician you were! Overload protection on a circuit is to protect the cabling, not the appliance(s) at the end of it. Ditto short circuit protection. Maybe you were thinking of over-voltage protection as used on industrial motors?

The 50V "touch voltage" (not a technical term in the U.K. Regs) is the maximum voltage the CPC (earth wire in common parlance) or neutral is allowed to reach by design under fault conditions in a domestic installation.

It is derived from the typical surface resistance of human skin and the typical current required for a shock to be fatal to a human (many other animals are much more sensitive). Current kills you, not voltage (hence we don't die from a bit of static, unlike MOSFETs).

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