Experts answer: First, all the water pipes must be flushed, the drainage pipes must be drained, and all water connections should not leak without leakage. All switches of the circuit must normally control the power of each channel. All sockets must be powered on. The left-right phase should be zero. The distance between strong and weak power should be no less than 30 cm.
Socket switch
Expanded Metal Mesh,Expanded Metal Mesh Sheets,Mesh Expanded Metal,Black Expanded Metal Mesh
ANPING HONGYU WIREMESH CO.,LTD , https://www.hongyufence.com