Megger
Megger LT300 High Current Loop Tester EN-BS
From £442.00Unit price /UnavailableInc VAT: £530.40
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Kewtech
Kewtech KT400 Digital Loop Impedance & PSC/ PFC Tester
From £359.00Unit price /UnavailableInc VAT: £430.80
Frequently asked questions
A loop impedance tester measures the total resistance in an electrical circuit. This helps ensure that circuit breakers or fuses will disconnect safely in the event of a fault. It’s an essential tool for checking the safety and performance of electrical installations.
A loop tester measures earth fault loop impedance, while an RCD tester checks that residual current devices trip within safe limits. Both are needed for full electrical inspection and testing compliance under the 18th Edition Wiring Regulations.
Yes. Regular calibration is important to maintain accuracy and compliance. Most electricians calibrate their loop testers annually to ensure reliable results and meet certification requirements.
When selecting a tester, consider test range, resolution, and whether you need high-current or non-trip testing modes. It’s also worth checking features like backlit screens, auto-null, and battery life to suit your working conditions.
Yes, most modern testers are designed for use on live circuits. However, always follow the manufacturer’s safety guidance and wear suitable PPE to ensure safe testing.