Difficult Problems Encountered With Plug-in Terminal Blocks

Cause burn black:

If the terminal is black, one of the probability is not necessarily burned to black, air oxidation is also very likely to black. So how to verify whether it is burnt black? The way everyone uses it is to wipe it with your finger. If it can be wiped off, like incense ash, it is a gray-black chemical substance produced by oxidation. You have to use sandpaper or a knife. It can be worn away.

The authoritative experts of the terminal block kindly remind you that one thing to pay attention to here is: Do not wipe with your fingers in the case of induction electrification! Then there is another probability that it burns to the ground. Except for fire accidents and qigong masters, there is only one possibility, that is, the wiring terminals are overheated.