How to use a non-contact voltage tester pen to inspect lamps to verify lighting installation projects
After the lighting project is completed, inspection lamps are often used for calibration. Disconnect all light switches and pull out the phase line melt tube. The upper and lower pile heads of the fuse are connected across the high-power inspection lamp.
Turn on the main power switch and check the lamp in the series circuit. When the line is normal, the light is not on, and the light must be short-circuited. Troubleshoot and re-calibrate until there is no short circuit in the line.
Check each lamp of the branch circuit and close the lamp switch respectively. The branch circuit short circuit inspection light is on, and the disconnection fault light is not on. The inspection light emits dim light, and the inspection light is on, it is normal.
Turn off the lights to check the second one, and do the same with all the lights in the law school.
