Class 2 insulation tests

[oldtimer]

Delongie have a convector heater that has a metal cover but 2 plastic side panels with a class II badge on it so I put the probe on the metal frame to confirm there is no leakage but even then I flicked the tester to class I to make sure there was no continuity but in the case of a plastic hoover then there is no point doing a insulation test yet speak to PAT tester and its yep plug it in and push the button now that worries me because they dont understand without the earth lead there can be no return path. The only other problem as i have is because the industry is full of Urban Myths so you now get a caretaker saying either well the last guy tested it or I have been told you dont have to test class II equipment mind I was lucky as an older Delongie class I heater was sitting beside ther class II model so I could explain to the customer

 

[Mistertee]

Hi, Class II (and Class I) insulation test is carried out with Live and Neutral shorted together. With Class I the return path is the Earth connection - IF THERE IS A FAULT. With Class II the return path is any user touchable metal part. When testing a phone charger, the test lead crocodile clip needs to be clipped to the metal jack. Otherwise if there was a fault, this could be missed.

 

[Darkwood]

Hi, Class II (and Class I) insulation test is carried out with Live and Neutral shorted together. With Class I the return path is the Earth connection - IF THERE IS A FAULT. With Class II the return path is any user touchable metal part. When testing a phone charger, the test lead crocodile clip needs to be clipped to the metal jack. Otherwise if there was a fault, this could be missed.

Welcome to the Forum Mistertee... when wanting to reply to a thread just check the dates of the previous postings, this is a 3yr old thread so unlikely any responses to your post from the OP.

Closing thread on that note , feel free to open a new thread if your are interested in discussing this subject :smiley2: