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Volt stick lighting up at gas meter

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Guys was called out last week to a 2nd floor flat British Gas was to have moved the gas meter but refused because the fitter checked the gas meter pipework with a volt stick and it lit up. He added that it could be nothing but he could go no further until it was checked out .

 

Had a look it was a split CU one side RCD and non RCC

Supply was a TNCS (Ze=0.06)

Gas pipe bonded with a 10mm

Water pipe bonded by a 10mm

 

I checked this out and measured for voltage at the meter via a separate earth and nothing and yep volt stick lit up I eventually tracked the problem down to the central heating boiler but went no further as it is under a maintenance contract .

 

So I take it this can be common on a TNCS or PME supply in a flat ? Anybody had this and what checks do you do ie amp probe the gas pipework and any faults that you have found causing this

 

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If you have no potential between pipework and earth, then you have no problem. Voltsticks aren't and shouldn't be used for testing as you know. Voltsticks light up for all sorts of reasons, and should be ignored, a calibrated voltmeter is far better. The BG engineer needs some training by the sounds of it, or he should at least leave the electric to someone like yourself who knows what they are doing!

 

Cheers………..Howard

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Guys was called out last week to a 2nd floor flat British Gas was to have moved the gas meter but refused because the fitter checked the gas meter pipework with a volt stick and it lit up. He added that it could be nothing but he could go no further until it was checked out .

 

Had a look it was a split CU one side RCD and non RCC

Supply was a TNCS (Ze=0.06)

Gas pipe bonded with a 10mm

Water pipe bonded by a 10mm

 

I checked this out and measured for voltage at the meter via a separate earth and nothing and yep volt stick lit up I eventually tracked the problem down to the central heating boiler but went no further as it is under a maintenance contract .

 

So I take it this can be common on a TNCS or PME supply in a flat ? Anybody had this and what checks do you do ie amp probe the gas pipework and any faults that you have found causing this

Oh no, Oh dear, Gasp

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Agreed and call me cynical but why all of a sudden are the meter guys doing this other to say Ahh Haa you have a major problem and I can get my company to look at it for you christ there was a bloody big 10mm earth cable bonded to the pipe.

 

Plus this is the first time I have heard of this so no doubt I can expect more and I want to be prepared.

 

I had a problem last year where a metal sink was "live" and tracked it down to the washing machine socket earth being adrift and the sink being bonded to the washing machine socket earth terminal with plastic supply pipes so once the earth was reconnected problem was solved

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Oh no, Oh dear, Gasp

Care to comment 

 

Is this a new BG wheeze ? the reason I ask is I get called out about 7-10 times a year and its always O my god you have no earth only to find on all of one they do have an earth 

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comment about  using a volt stick? I had better not, tony or lenny may ban me. they should be thrown away, appalling items of equipment and only enthusiasts use them ;)



if you do use one then at least use 2 together lol

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I'll not ban you. The bloody things should be in the bin! I'll help any way I can to hurt GB

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There's nothing wrong with volt- sticks as long as you remember the golden rule-

 

If it lights up red it's probably live and if it doesn't light up its probably live.

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Just had a call this morning from a customer saying that National Grid were installing new feed and would connect to his meter because the meter was and internal pipework was live.

 

No surprise that when I had put my voltmeter between MET and meter we had 0 volts. Got them out of the van before leaving and asked their hole digger to test again and lit up, then nothing then lit up etc etc. He even went out to his van, got a brand new volt stick, tried it and didn't light.

 

All bonding in place and Ze check and left. Even better is that Nation Grid are reimbersing the customer for my time, so price suddendly increased!

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I had this last year when the gas mains were being replaced.

Volt stick lights up at 10mm to gas pipe.

0 volts from met to gas bond of course.

Turn main switch off it disappears.

I couldn't get any volts on the gas pipe to earth bonded or unbonded.

Just about as good as the gas board" engineers" who left a customer of mine with no hot water for a week as they had to order a side entry immersion.

Only for it not to be the immersion at all but the timer!

And then to cap it off bg electrician says he can't touch the controls and left.

They really do boil my pish

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I think they have their uses albeit very limited.

 

I used to use one but since I lost it a couple of years ago I haven't replaced it and TBH don't miss it.

 

I only get annoyed when seeing people using them as a primary tool.

 

I.E. (Not so) safe isolation. only fault finding tool etc.

 

The only culprits of this I've come across are plumbers, builders, handymen etc.

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my volt stick would glow red when put against the cat!!

 

ive since bonded the cat to the radiator, although next week i may myself be getting bonded in jail by a big black guy as the RSPCA are prosecuting me!

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My appropriately named Metrel handyman voltstick used to light up when I put it in my pocket.

 

Must have been my electric personality.

 

Or alternatively it was crap and picked up the static.

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