« Back to Glossary Index
Earth loop impedance test result showing 0.73 ohms of resistance with 323 amps of short circuit current
The earth loop test is a mandatory electrical test set out in ASNZS:3000:2007 – section 8.
It determines whether the resistance on the earth fault loop is low enough for breakers to trip in the event of a short circuit.
If the earth fault loop resistance is too high (during a fault), then breakers might not trip in time which would cause a fire.
