Description

The Test Lead Extension 50 Metres (90730050) is a long-range extension lead for extending the reach of multi-function installation testers when performing Earth Fault Loop Impedance measurements from the consumer unit to remote points of installation — such as garden outbuildings, distant socket outlets, or external lighting circuits where the tester’s standard leads do not reach the test point.
The 50-metre length accommodates the measurement distances encountered on larger domestic, farm, and light commercial properties. The lead is correctly rated for the test voltages and currents involved in ZLOOP testing, and the correct calibration of the tester accounts for the known resistance of the extension lead to maintain measurement accuracy.
For electrical contractors who carry out inspection and testing work on larger sites and properties, a 50-metre extension lead is an essential accessory that enables complete testing of all circuits without requiring multiple re-connections of the tester or the use of a second tester at a remote point.