1, the first three-hole plug, that is, the triangular one, the top of the one is certainly the ground wire,
2, the measurement of fuses and three-hole plugs is a triangle Parallel to the two plugs that one is through, if the amount of through, then through the one temporarily do not wire, do not pass the one connected to the zero line, and then the amount of fuses and switches that one of the three plugs is through, if through, it's a good thing, the amount of switching on the other two stakes, that one can be disconnected, on the firewire or phase wires can be disconnected to the other stakes; the situation is the second is the fuses and parallel to two plugs are not passable, directly skipped! Go to the third step.
3, because of the case of two fuses and three-hole plug two are not, that fuse and switch of the three stakes must have a pass, measure out the switch and fuse through the stake can be opened, will be able to open the stake to the plug of the remaining stake, the fuse connected to the fire wire
4, the fuse and switch of three stakes and three-hole socket with a are not passable, there are two kinds of connection, one fuse head connected to the phase wire, the other to the phase wire, the other to the fire wire. One is a fuse head connected to the phase line, the other end of the three stakes with the switch is connected to any one of the switch can open the end of the three-hole socket connected to the remaining stakes; or a stake from the switch to connect to the firewire, can be opened to a fuse, the other end of the fuse is connected to the remaining sockets.
PS: The fuse should be a one-time direct protection of the fuse, once blown can not be restored, although the surface seems to be directly connected, but when there is a large current through or to reach the protection current should be blown
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