Generally speaking Delixi Circuit breaker The current flows from the live line to the zero line, which is a loop. As long as the zero sequence potential is not detected, it will be considered as leakage and will trip.
Advantages of single P leakage protection: small size, if Power Distribution Box There are many packet switches. The single P has one less position than the double P, and several more branches can be connected in the same space.
Most of the double P with leakage protection are not marked with N, but they are generally connected to the left connecting wire and the right neutral wire. The wiring of the socket is just the opposite, and the left is neutral and the right is grounded in the fire. If the connection is reversed, it is OK. Dual P controls the on-off of the two lines.
However, some double P's do not have the N mark, and the position with the N mark must be connected to the neutral line to form a good wiring habit.
Advantages of double P with leakage protection: it is safer, and there is also an advantage that is easy to be ignored. Double P has stronger ability to identify overcurrent and overvoltage. It can play a more protective role of the air switch. Well, that's all for today's sharing. Thank you for watching. See you next time!
