Zs live Testing - does everyone do it?

[scott g]

Zs live Testing - does everyone do it?
http://www.------.org/forums/forum/i/icons/arrow.gif Or do you use a calculated Zs instead

 

[acadennis]

Live testing not permitted under EWR 1989

 

[whensbait?]

i rekon if the r1r2 plus the ze taken at the board is lower than the accepted values for zs then this is a better result to show as it is worst case scenario, it doesnt take into account parallel earths so a live test will always be lower, so if a dead test passes then a live test should do too.

 

[simonatlondon]

I like to do Zs just to confirm my initial confirmation. It takes 5 seconds to do so why not. I too record the highest value, usualy r1 + r2 +Ze.

 

[whensbait?]

well it does prove that the neutral is there, but when testing lights it becomes akward to get all 3 leads in place, i know there are all sorts of wonderful toys to make this easier but i supose its down to personal preferance

 

[slocm3105]

Live testing not permitted under EWR 1989

Where does it say that? Testing is basically the only thing you are allowed to do live.

 

[kung]

Only circuit your permitted to do zs reading if you have socket interface is ring/radial socket outlets all other circuits must be cal.

 

[Guest123]

Hey all.

I think the whole "do you measure or calculate Zs" thing has been threaded to death now.

But in answer to your question I always measure Zs and like to compare it with the calculated value to make sure that all is as it should be.

Cheers.

 

[Normanator]

i rekon if the r1r2 plus the ze taken at the board is lower than the accepted values for zs then this is a better result to show as it is worst case scenario, it doesnt take into account parallel earths so a live test will always be lower, so if a dead test passes then a live test should do too.

If live testing is not allowed how do you get a Ze reading at the board