How to measure the zero line with an electric pen has not been broken~

A, with neon bubble pen to measure the zero line through the following methods:

Unplug all outlets, turn off all switches;

Use an incandescent lamp and a plug connected to make a test lamp, inserted into any socket;

The total air switch in the distribution box or the branch circuit switch is disconnected, and then the distribution box or the distribution box of the zero line disconnected;

Close the air switch just disconnected, test the zero line wire whether there is power, power on the zero line is through, no power is a break point.

Two, specific breakpoint location detection

Specific breakpoint location detection must use a highly sensitive inductive test pen;

Open the line on the farthest end of the electrical switch, with a test pen along the line to find, there is a power inductive light when the light is on, between the light is on and off is the breakpoint.