10/06/2026
Quick ZE test on the board before finishing the job ⚡
Even though the faulty cooker switch appeared to be just a failed mechanism, it’s still important to carry out proper testing to make sure there aren’t any underlying issues with the supply or earthing.
What is a ZE test?
It measures the external earth fault loop impedance of the installation — basically checking the effectiveness of the earthing path coming into the property.
Why is this important?
Because proper earthing is critical for protective devices to operate safely during a fault condition.
Electrical work shouldn’t stop at replacing parts — proper testing is what confirms the installation is safe.
If you’re in Bristol or surrounding areas and need professional electrical testing or repairs, contact Live Line Electrical.