Electrical wiring in the United Kingdom - Wikipedia
https://en.wikipedia.org/wiki/Electrical_wiring_in_the_United_Kingdom
Earthing and bonding are used together to provide shock protection by avoiding a dangerous combination of magnitude and duration of the voltage to which people may be exposed in the event of a fault within the installation or outside the installation. (Exposure may be from e.g. hand to hand or hand to foot, between simultaneously accessible conductive surfaces, which might include the earth itself, mildly conductive floors and walls, metal taps, pipes, electrical appliance…
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