LAST UPDATED: 13th January 2023 by The Editorial Team
Summary: Step by step guide and video showing how to use a continuity tester to check a socket outlet.
How to use a continuity tester
Using a multimeter to test for continuity
- Cut off the power supply to the relevant circuit from the consumer unit.
- Either remove the fuse protecting the circuit you will be working on or switch off the MCB (miniature circuit breaker).
- Unscrew the face-plate from the socket you want to test.
- Disconnect the two live cores (red).
- Clip the continuity tester onto the end of one core.
- Touch the other core with the probe.
- If the bulb on the continuity test is illuminated, the circuit has been completed and the socket is on the ring main and suitable to connect a spur to. If it fails to light up, it is already on a spur and cannot be used to supply one.
The colour-coding system for electric cable changed in 2006, make sure you read Electric cable and flex to view the new information.
How to test for continuity using a multimeter video
- Preparing cable and flex for connection
- Replacing a socket
- Installing an outdoor socket
- Installing a new electric socket