Socket tester also checks earth-loop impedance

Martindale
Costing less than £50, this circuit tester from Martindale checks earth-loop impedance.
Martindale’s E-ZE 150 electrical socket tester gives an accurate indication of earth-loop impedance — as well as wiring faults such as a reversed phase and neutral, reversed phase and earth, open earth etc. These testers are shaped like a plug top and cost less than £50. They enable the earth in an electrical installation to be pretested by an apprentice. They can also be used to check if damage has occurred to an earth circuit — without tripping RCDs. The impedance of the earth loop is indicated in bands of 0, 1.7, 5, 10, 100, 200 and 500 Ω.
For more information on this story, click here: April 08, 165
Related links:
Related articles:



modbs tv logo

Fujitsu General Air Conditioning becomes GENERAL HVAC Solutions UK

Fujitsu General Air Conditioning (UK) has become GENERAL HVAC Solutions UK from 1st January 2026, strengthening its long-term position within the global Paloma Rheem Holdings (PRH) group.

Market performance indicates encouraging signs for future of BEMS sector

Highlighting an increased desire from property developers, architects and designers to decarbonise the UK’s building stock through the specification and implementation of building controls and automation, the building energy management systems (BEMS) market showed steady progress in Q3 – rising 2.6% compared to the previous quarter.