Such a system in the bathroom is simply necessary — it can be used to ground the housings of all electrical appliances: a washing machine, a dryer, a shower cabin (if it is powered by a network), lighting devices, etc.. e. Three-wire system includes a phase conductor, neutral and protective.
In the event of any malfunction, the devices may be energized, and if a person touches them, there is a high risk of electric shock. Protective grounding helps prevent this. Experts strongly advise to ground not only electrical appliances, but also the body of the metal bathtub, as well as the shower tray (they have a special terminal). A three-wire cable is laid from the shield to the bath, and a separate residual current device (RCD) is mounted in the shield.
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Igor Kornelyuk. A town that does not exist. Musical card on the entertainment site
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