The Seaward Powertest 1557 is ideally suited to domestic engineers and carries out the standard tests required by the 18th Edition wiring regulations. It's an easy-to-use tester and comes supplied with a hard carry case and basic calibration checker.
Thanks to a clever bit of design, the Seaward Powertest 1557 includes a cordless probe for use with the tester, allowing the user to hold the tester in one hand and see the results at the same time. This is ideal when performing continuity testing.
Weighing in at a mere 900 grams, the Seaward Powertest 1557 is lightweight and it can do any test that you require at the turn of a knob, including:
Earth Continuity, Insulation (100v, 250v, 500v)
Non-trip Loop Impedance
Line Impedance
RCD trip line
RCD trip current and voltage / frequency measurements
Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on all orders
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
