ZS Testing

[Sparky 63]

Hello Guys, when carrying a ZS test on 13amp sockets , can you confirm that all appliances have to be removed prior to the testing of the circuit,

Thanks

 

[Pete999]

Well yes I would as a matter of course, why do you ask?

 

[cotty]

Hello Guys, when carrying a ZS test on 13amp sockets , can you confirm that all appliances have to be removed prior to the testing of the circuit,

Thanks

Unless of course the lady of the house has her hitachi wand plugged in!!

 

[R G]

With a 20 amp pulse down the earth I would defo recommend unplugging appliances , not only because you could damage some appliances , you will be inducing a live supply to the casing of class 1 appliances ,,,

 

[telectrix]

90% of the time, though it 15mA. ( no trip).

 

[guest119]

Hello Guys, when carrying a ZS test on 13amp sockets , can you confirm that all appliances have to be removed prior to the testing of the circuit,

Thanks

Hold on and I'll go have a look.


Boydy

 

[walsall]

I always do. If the ELI is high there could be a shock risk while doing the test. There is always a risk that someone could be in contact with the equipment.

 

[spark 68]

I always do. If the ELI is high there could be a shock risk while doing the test. There is always a risk that someone could be in contact with the equipment.

How do you work that out ?

If the ELI is high enough to allow >50V touch voltage on the CPC the test aborts, my meter allows me to set this at either >= 25V or >= 50V, I would assume most other meters do the same or similar.

 

[GLENNSPARK]

90% of the time, though it 15mA. ( no trip).

no BS3036s left then down your way Tel?

 

[walsall]

How do you work that out ?

If the ELI is high enough to allow >50V touch voltage on the CPC the test aborts, my meter allows me to set this at either >= 25V or >= 50V, I would assume most other meters do the same or similar.

If the CPC was totally open circuit there has to be a shock risk.

 

[spark 68]

If the CPC was totally open circuit there has to be a shock risk.

But the test aborts in that case.

What I was getting at was if you look at all of the calcs in the regs concerning Bonding, sup bonding, RCDs, Earth rods on TT, they are all concerned with stopping the touch voltage from rising above 50V , exactly the same as your meter does during the test, for the same reasons.

By your reasoning you could have a fully compliant system (albeit on the edge), that could be err... dangerous in the event of a fault, which is precisely what the regs are designed to prevent. no?

 

[GLENNSPARK]

But the test aborts in that case.

What I was getting at was if you look at all of the calcs in the regs concerning Bonding, sup bonding, RCDs, Earth rods on TT, they are all concerned with stopping the touch voltage from rising above 50V , exactly the same as your meter does during the test, for the same reasons.

By your reasoning you could have a fully compliant system (albeit on the edge), that could be err... dangerous in the event of a fault, which is precisely what the regs are designed to prevent. no?

yep...

i read that one...and thought it was drivvel....