18th Edition Testers

Designed to make electrical installation testing safer and more efficient, our range of multifunction testers perform all tests required by 18th Edition wiring regulations.


Seaward's PowerCheck 1557 is the most comprehensive combined 17th Edition and PAT checkbox in the UK. Offering the user full interim checking in addition to annual calibration
A comprehensive verification of 17th Edition and PAT's. The Powercheck tests for full earth continuity, insulation, resistance, RCD trip time, RCD trip current, touch current and verification
PU250 Insulation/Continuity Tester Proving Unit – The PU250 allows simple and quick check of insulation resistance and continuity for all makes of I/R testers.