Description

The Di-LOG DL9073 Wander Lead 50 Metres is a long-range test lead extension specifically designed for Earth Fault Loop Impedance (ZLOOP) testing on remote circuits where the distance from the consumer unit or distribution board to the remote test point exceeds the reach of standard instrument leads. The 50-metre lead provides the reach needed to test circuits in outbuildings, distant socket outlets, and external lighting points on larger properties.
The wander lead’s known resistance is factored into the tester’s calculations or compensated for during the measurement process, ensuring that the ZLOOP result accurately reflects the circuit impedance rather than including the lead resistance. This calibration is critical for obtaining test results that correctly determine whether the circuit satisfies the maximum ZLOOP limits in BS 7671 Table 41.2.
For electrical contractors performing full BS 7671 periodic and initial testing on larger residential, farm, and light commercial properties, the DL9073 50-metre wander lead is an essential accessory for achieving complete circuit coverage without relocating the tester to multiple connection points.