Why is the hotel room suddenly out of power?

A hotel room without electricity has no live wire, but the neutral wire is not completely voltage-free. That is to say, the zero line in front of the leakage switch is not well grounded or the distance between the zero line of the room and the leakage switch is too long and too thin, resulting in voltage on the zero line of the room. When the zero line of the card is touched, it will form a current to the ground, which will cause the leakage switch to trip.

Solution: First find out the reason why there is no electricity in the room, and then replace the power switch of the card. If it still trips, switch the neutral line of the live wire. Then, don't use 1000V megohmmeter to measure the resistance to ground (be careful to turn off the power first and disconnect other rooms). Finally, in the absence of signs, check the switches and lines section by section.