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Question:

The wall was sideways opened a trough how to do ah?

The power cable is selected according to the cable current ()

Answer:

The copper core grinding first to the copper core on the flux (rosin or solder paste)
PVC pipe. Iron pipe, trunking, bridge, hose, and so on. The The PVC pipe, trunking generally the most common, used in the kind of request is not very strict, not much bit line. Capital is not high, low cost, iron pipe bridge is mainly used in fire strict buildings, shopping malls, high cost, security, line points and more use of bridge hose used in the line out of the floor to the desktop section. Nice point of the ceiling. Overhead floor, are suitable for placement is not comprehensive, personal experience
With steel wire, lead the bend round, but do not let the wire can hold the pipe wall, and sometimes also need two twisted wire, wire over the past OK

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