Do not use fire blocking material? Question added: commonly used models of fire pack specifications which ah more
CD-ROM drive is not power, buy the root line on the line.
First to figure out what the three lines are, if I guess good, it should be a FireWire, a zero line, a switch line. (But how is there no ground?) Come on according to this then L connected to the line of fire, N then zero line, there is a sign of the ground wire. Do not know their own words, do not mess up, called an electrician to pick up better, or easy to accident Oh!
General municipal engineering of the weak cable pipe, refers to the radio and television systems, communications systems, closed-circuit television, monitoring systems, fire linkage system, video intercom systems and other wiring and pipeline