On Thu, 19 Apr 2007 09:18:58 +0100 someone who may be Tim Lamb wrote this:-
Whether you, or I, can see any benefit the IEE/IET committee, in their wisdom, have decided that the bond should be as close to the point of entry as practical. The result is a green and yellow striped bit of copper running alongside a gas pipe for many metres in several houses I keep an eye on.
In message , David Hansen writes
OK. That sounds like the last word.
Thanks.
regards
I agree. The WB site gives this approach to the subject
I think that WB mix the words extraneous and exposed up. They also suggest that "earth bonding" which is a made up phrase and means nothing needs 10mm cable
Adam
any chance of a pointer (eg into Screwfix or TLC or other picture or catalog listing) to a 'Tenby' clamp please?
TIA
On 22 Apr 2007 15:41:46 -0700, jim mused:
Can't seem to see any in any online stores. Tenby is a manufacturer, not a type.
Manufacturers page -
TFT
but unfortunately the smallest dia pipe that Tenby's BS style clamps fit is 12mm, though they do make an 'earthing clip' to fit 10mm dia, these aren't in the standard BS style & don't have the official warning label attached.
So what is the right way of main bonding to the incoming 10mm dia Cu oil pipes? Should one of the Tenby 10mm clips be used, fixng the 10mm bond wire to it with Cu washers & nuts & adding a label from a BS style clamp?
BTW it isn't just matching the diameter that bothers me, it's also possible damage when a quite hard BS clamp is pressed onto a rather soft Cu pipe.
I had no prob with the basic clamps, but I remember there was a knack to it. IIRC I think it was a case of pull the strap tight with pliers before tightening it all up.
NT
On 23 Apr 2007 02:15:10 -0700, jim mused:
Never had a problem with them on 10mm pipes, fitted loads. Some people read the instructions and dwell on it too much, just fit it.
I think they're probably for earth rods, and would just flatten the
10mm pipe.
That's why I use the Tenby ones as they're quite soft, some are very rigid and deform anything below 28mm.
On 23 Apr 2007 05:09:27 -0700, snipped-for-privacy@care2.com mused:
Probably with cheap stiff crap clamps but the Tenby ones are much better, you don't need to tug them with pliers.
And the Tenby ones allow a 10mm earth cable to be clamped nicely and quickly without any of the earth cable strands falling out from behind the clamp's washer. They have a nice fitting rectangle washer not a piss awfull round one with gaps around it.
Adam
On Mon, 23 Apr 2007 20:09:50 GMT, "ARWadsworth" mused:
That's the other thing that helps.
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