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#140487 - 03/27/04 01:21 AM Non-conductors don't conduct?!
pauluk Offline
Member
Registered: 08/11/01
Posts: 7520
Loc: Norfolk, England
My usual supplier was out of a few urgently needed items yesterday, so I had to go to the nearby B&Q (big DIY store, very similar to HD even down to the orange color scheme).

Here's the entire printed wording on my individually wrapped earth clamp:

Quote:
Earth Clamp EC 15/2 - 19749BQ
195mm to fit 35-50mm approx.
For indoor or outdoor use.
Not suitable for use on pipes with non-conductive surfaces.
Accepts earth cables A-E 2.5-16mm2
Not for use on the sheath or armour of a cable.


Ah well -- So much for bonding to the PVC water pipe!
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#140488 - 03/27/04 01:43 AM Re: Non-conductors don't conduct?!
Trumpy Offline


Member
Registered: 07/05/02
Posts: 8211
Loc: SI,New Zealand
Yes that's a good one Paul.
Just how do you bond those PVC pipes?.
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#140489 - 03/27/04 06:21 AM Re: Non-conductors don't conduct?!
George Corron Offline
Member
Registered: 05/16/01
Posts: 717
Loc: Lorton, Va USA
Geeeez,
I thought YOU two were better than that.

WITH A PLASTIC BOND BUSHING!!!!!!!!!!1
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#140490 - 03/27/04 08:31 AM Re: Non-conductors don't conduct?!
C-H Offline
Member
Registered: 09/17/02
Posts: 1497
Loc: Stockholm, Sweden
Don't they mean a painted surface?
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#140491 - 03/27/04 09:22 AM Re: Non-conductors don't conduct?!
Bill Addiss Offline
Member
Registered: 10/07/00
Posts: 3875
Loc: NY, USA

Quote:
Don't they mean a painted surface?
C-H, You might have it there.

Does it have a smooth contact area Paul?
Or 'teeth' that might dig in?

Bill
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#140492 - 03/27/04 12:16 PM Re: Non-conductors don't conduct?!
djk Offline
Member
Registered: 12/26/02
Posts: 1237
Loc: Ireland
It seems that plastic, not necessarily PVC, pipes are being used absolutely everywhere in domestic installations here for both hot and cold water systems.

This house is still fully plumbed in copper. It'll be interesting to see how well the plastic actually lasts

Plastic water mains and cold water systems have been common for quite a long time though and I've never seen them give any problem.

These plastic piping systems make plumbing more like wiring. No more bending copper pipes

[This message has been edited by djk (edited 03-27-2004).]
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#140493 - 03/28/04 12:33 AM Re: Non-conductors don't conduct?!
pauluk Offline
Member
Registered: 08/11/01
Posts: 7520
Loc: Norfolk, England
Good point about painted pipes -- Maybe that's what they're trying to warn against.

The typical British pipe clamp has a saddle and a metal strap, like this:

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#140494 - 03/29/04 01:32 PM Re: Non-conductors don't conduct?!
classicsat Offline
Member
Registered: 11/23/02
Posts: 456
Polyethylene (I am sure that is what we use here), works well for us, and lasts quite a long time.
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#140495 - 03/29/04 01:40 PM Re: Non-conductors don't conduct?!
sanUK Offline
Member
Registered: 01/09/03
Posts: 45
Loc: Scotland
Have you seen the new type of earth clamp made by MEM ?



Looks a bit ropey to me but the 2 field reports Here say different, might look into getting a couple, and give them a try.
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#140496 - 03/30/04 12:36 AM Re: Non-conductors don't conduct?!
pauluk Offline
Member
Registered: 08/11/01
Posts: 7520
Loc: Norfolk, England
San,

No, I haven't seen those before.

Quote:
The sample clamps had been received by our electricians with some suspicion and apprehension

That's my initial reaction on seeing them. My first inclination is to categorize these along with "push-wired" receptacle terminals and such like.
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