The switch controls the live wire. When I use a tester to test the neutral wire, it is slightly bright. What's going on?
Firstly, it should be clarified that regardless of whether the live wire (professionally referred to as the phase wire) is disconnected or not, the neutral wire will not be charged under normal circumstances. If the neutral wire is live, it means there is a problem somewhere on the line. So how can we identify where the problem lies? For ordinary electricity customers, here are some simple and practical quick search and handling methods:
1, Regarding this issue, the reason for the phenomenon caused by the slight brightness of the neutral wire is generally due to oxidation at the zero wire overlap, resulting in poor contact. However, this situation can be ruled out as a problem of the main line's neutral wire being disconnected. The fault phenomenon and consequences caused by the main line's neutral wire being disconnected or having poor contact are different, and will not be analyzed here.
2, Segmented search and narrowing down the scope, first check whether the neutral wires of the upper and lower pile heads of the switch are normal when the main switch is in the closed position. If the neutral wires are normal and without power, it is usually a problem in the later section of the switch. You can check the joints on the line section by section, find the fault point, and then rewire and wrap it. Because problems usually occur at the connection points of the circuit. The most common occurrence of this situation is usually in old power lines from a long time ago. Nowadays, indoor wiring and installation are very scientific, and this problem usually does not occur.
3, If there is no power on the neutral wire of the upper pile head and power on the lower pile head when checking the upper and lower piles of the switch, this situation is usually caused by a broken switch. The switch can be opened and closed several times, and sometimes the power can be temporarily restored, but the switch should still be replaced in a timely manner.
If the neutral wire on the switch head is also charged during inspection, this situation can usually only be reported by calling for repair, as there may be pole climbing inspection, which users cannot easily solve.
