Use a voltage detection pen to correctly distinguish equipment leakage from static electricity
The metal casing of some equipment is not grounded or connected to zero protection, and its casing is often electrified due to induction, and the neon tube will also light up during electricity inspection, but this electrification generally does not constitute an electric shock hazard.
In this case, electricians can use test lamps, multimeter resistance gear, megohmmeters and other measurements to distinguish them.
In addition, an electric test pen can also be used to distinguish whether the equipment is leaking or has static electricity. The electric test method is: touch the charged equipment with an electric pen. If the neon tube flashes for a while, then it goes out, which proves that the device has static electricity; if the neon tube flashes for a long time, It's a power leak.
