Blog
Appliance Tester Relay failure – again?
If your tester suddenly stops – perhaps a clear Relay Error, an ambiguous Err 17 or a dreaded Hardware Error message — there’s a good chance a relay has given...
What is substitute leakage testing?
If you’ve got and Advanced Appliance Tester like the new Metrel Alpha PAT, 3309 or the Seaward Primetest Elite you might have seen a test called Substitute Leakage test. So...
Insulation vs Insulation P
Insulation vs Insulation P – are you using your 3309 correctly? Are you a Metrel 3309 user? Have you ever wondered what the difference is between the Insulation test and...