Phase or zero break in the switch?
Hello. The question is, is it important to carry zero from the distribution box to the lamp, and first the phase to the switch, and then to the lamp? Could it be the other way around? If not, why? Thank.
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Hello! It is important to lead the phase to the gap, because if you break the zero, the lamp (or rather the lamp) will always be energized and even when replacing the lamp with the light off, you can be shocked. And if the phase is broken, this will not happen.
that is, if you capture only the phase, it will strike an electric current without zero?
Yes
Well, if phase and zero? will strike with the same force as if only a phase or is there a different situation? thanks
Phase-this wire is a source of electrical energy with a voltage of 220 volts relative to (earth) zero. The shock occurs at the moment when a person enters the zone of action of this electric field, touching the current-carrying element, forming an additional line of current leakage through his body into the "earth". The strength of the current, it is the current that represents the danger, depends on the resistance of the body, and if one grabs the phase and stands on wet ground or floor, the current through the body limits only the total resistance of the wire-body-ground-zero line. And it can be fatal (on this affects the current path). And if you put on dry shoes and stand on a rubber mat, then the current strength will be so insignificant that it will not even be felt.