Earth Bonding on a Submain

[Simlec]

The OP said he has a plastic pipe entering the garage. Not copper

 

[guest119]

The OP said he has a plastic pipe entering the garage. Not copper

Bringing in beer.


Boydy

 

[Deleted member 9648]

So to test the plastic pipe you would disconnect your copper part and then test to MET, which would then give you a reading of ?? Remember it's plastic!

Er...yes,I meant a test should be on the copper section connected to the plastic section for those of a pendantic disposition. (if that makes sense).
Personally I'd do a visual 'test' to establish extraneousivity....(which doesnt make sense)

Mines a Guiness.

 

[44ALLAN]

all depends on the conductivity of sh!te.

Why bring Sunderland into the discussion?

Wembley beckons..............gud luck Wednesday to my Mackem friends.............cough !

 

[Engineer54]

I'm assuming that all that is extending this TN-S equipotential zone, is the steel wire armour of the 4mm SWA cable?? Which if is the case, makes it all a bit of a mockery to main bond in 6mm or 10mmcopper!!
Not that the copper pipe will probably need bonding anyway!! lol!!

 

[walsall]

Thanks all, the upshot is..... (a) everyone likes drinking (b) I was a bit silly thinking that a bond was required there (c) the NIC man hadn't thought it through either.
and no I wouldn't have ever bonded a plastic pipe!!!

Cheers all!

 

[walsall]

An update, went back to site today for something else and the plumber has been at work. The sink as been replaced with a stainless one and its attached to the concrete wall. I repeated a test between the boards earth and the sink and got 700ohms - I'm presuming one of the screws has got the rebar.

So I could put a 6mm conductor between the board and the pipe (which is bigger than the supply conductors) - however this isn't a main protective bonding conductor as its not continuous

The other option is suppose it to stick in an earth rod and go TT but that's a right PITA.

Any thoughts?

 

[SPARTYKUS]

An update, went back to site today for something else and the plumber has been at work. The sink as been replaced with a stainless one and its attached to the concrete wall. I repeated a test between the boards earth and the sink and got 700ohms - I'm presuming one of the screws has got the rebar.

So I could put a 6mm conductor between the board and the pipe (which is bigger than the supply conductors) - however this isn't a main protective bonding conductor as its not continuous

The other option is suppose it to stick in an earth rod and go TT but that's a right PITA.

Any thoughts?

Just that I'm glad you did as WP suggested, and tested it, rather than just thinking its fine because you can see a bit of plastic. Nice one.

 

[Engineer54]

One reason why you ALWAYS test and never assume that copper pipework after a plastic incomer isn't carrying an extraneous earth potential... Just hook up a pipe clamp to the copper pipe section, you can bet your last pound, it'll be providing better protection than a typical UK TT system will!! lol!!

 

[guest119]

One reason why you ALWAYS test and never assume that copper pipework after a plastic incomer isn't carrying an extraneous earth potential... Just hook up a pipe clamp to the copper pipe section, you can bet your last pound, it'll be providing better protection than a typical UK TT system will!! lol!!

Unless it was you that put the spikes in

Boydy

 

[Engineer54]

Unless it was you that put the spikes in

Boydy

Ha ha, Well, it certainly wouldn't have been left, sitting on anything like a 200ohm Ra!! lol!!