main bonds.

[green-hornet]

There is absolutely no problem in running the Main Equipotential Bonding in One continuous run. It makes not a jot of difference whether you go to the Water or Gas point first.

And - the NICEIC frown upon the "Pigtail" effect that we are used to doing.

They claim it causes stress on the cable.

Your right there the reason pig tailing was done was to afford plumbers the ability to remove and replace joints and connections without removing the earth bonding.

However correct termination ie proper earth lugs the earth cable can be removed for inspection or repair and replaced without removing the clamp.

I used to be proud of my pigtails:^O

 

[green-hornet]

next question,6mm main bonds when did this comply and when was it a req to upgrade to 10mm.

adding an alteration to a circuit ie: boiler to an existing ring when would you need to upgrade the main bonds to 10mm.

6mm complied up to the 16th edition when it was changed to 10mm.

the 14th edition also stated that 4mm was ok.

I am sure special will tell me off later:^O

 

[binky]

I would not do that because you cannot test Ze .Batty

Tested rod first as part of deciding where to stick it

 

[Andy™]

Tested rod first

what about on a PIR, or other work done

not ideal to have all on one cable, but i have had to do this before

 

[a1]

Your right there the reason pig tailing was done was to afford plumbers the ability to remove and replace joints and connections without removing the earth bonding.However correct termination ie proper earth lugs the earth cable can be removed for inspection or repair and replaced without removing the clamp.

I used to be proud of my pigtails:^O

You are correct Sir.

Apparently the NICEIC are frowning upon the use of lugs too. They want the terminated end split and put each side of the screw on the BS951 Earth Clamp and tightened.

Like I say, That is the NICEIC's ruling.

 

[binky]

what about on a PIR, or other work done

Makes no odds - main bond is over size, its easy to disconnect if required at earth clamp, can't think of any other work that would require disconnection, least not on a regular basis. Plus it saved me about

 

[green-hornet]

You are correct Sir.Apparently the NICEIC are frowning upon the use of lugs too. They want the terminated end split and put each side of the screw on the BS951 Earth Clamp and tightened.

Like I say, That is the NICEIC's ruling.

No I think that is more hearsay than factual, it as long been the NICEIC's view that a cable not terminated properly ie split and passed between the bolt or screw on a clamp, can easily be removed or loosened by accidental pulling of the cable.

I think its one of those myths of the trade started by some other provider :^O

Big red book is the only guide you need:^O

 

[Zeespark]

I was told by My 2391 lecturer that crimping lugs werent designed to be fitted securely onto BS951 earth clamps. I am wondering if the ezybond clips are both legal and better than the 951's.

AndyGuiness Drink

 

[binky]

I was told by My 2391 lecturer that crimping lugs werent designed to be fitted securely onto BS951 earth clamps. I am wondering if the ezybond clips are both legal and better than the 951's.AndyGuiness Drink

Ezybonds aren't actually legal, which is a shame, cos they haven't been approved.

 

[a1]

No I think that is more hearsay than factual

Came from the mouth of an NICEIC Assessor.

 

[Andy™]

Ezybonds aren't actually legal, which is a shame, cos they haven't been approved.

even though i dont like the look of them and wouldnt use them myself, 7671 does allow new products w/o BS numbers to be used. but how that 'clamp' idea got past the thinking stage....

 

[green-hornet]

Very interesting note that has been included in all publications of any wiring regulations is the fact that new methods can be applied without BS7671 providing that all the requirements of BS7671 are met.

This is a bit ambiguous in its application, but means if anything better is found to do the same job after this publication it should not be ommited from use.

 

[tom1]

if it is broken but has good continuity do u always change it

 

[Adrian]

You are correct Sir.Apparently the NICEIC are frowning upon the use of lugs too. They want the terminated end split and put each side of the screw on the BS951 Earth Clamp and tightened.

Like I say, That is the NICEIC's ruling.

this is wrong because if you split it you have 7 cores so one side would have 4 cores and the other 3 so the clamp can not tighten the same on both sides

Please remember that your niceic inspector is not god and he does gets things wrong just like us

 

[batty]

this is wrong because if you split it you have 7 cores so one side would have 4 cores and the other 3 so the clamp can not tighten the same on both sides Please remember that your niceic inspector is not god and he does gets things wrong just like us

Well thats how I did it at college and was told that was old hat. I think if you are not going to use a lug it would be better to twist cable around screw but there again it could be said that would weaken cable. I think I will carry on using lugs.

Batty

 

[Subneural]

You are correct Sir.Apparently the NICEIC are frowning upon the use of lugs too. They want the terminated end split and put each side of the screw on the BS951 Earth Clamp and tightened.

Like I say, That is the NICEIC's ruling.

I was picked up on my Napit inspection last year for not using a lug and not leaving enough slack in the cable. I bet this year I get told not to pigtail it.

 

[batty]

I was picked up on my Napit inspection last year for not using a lug and not leaving enough slack in the cable. I bet this year I get told not to pigtail it.

They like to give you grief that way it looks like they are earning there money.

 

[Apache]

I was picked up on my Napit inspection last year for not using a lug and not leaving enough slack in the cable. I bet this year I get told not to pigtail it.

this has been stated before - think it was GH

 

[AAAMUSEMENTS]

On the subject of main bonds, an electrician who looked over our property not only wanted to (rightly of course) put earth bonds on the main water and oil pipes, but also wanted to put in an earth rod for the other end of the oil pipe where it entered the (plastic) tank, halfway down the garden.

Could there ever be a good reason for wanting to do this?

?:|

 

[batty]

On the subject of main bonds, an electrician who looked over our property not only wanted to (rightly of course) put earth bonds on the main water and oil pipes, but also wanted to put in an earth rod for the other end of the oil pipe where it entered the (plastic) tank, halfway down the garden.Could there ever be a good reason for wanting to do this?

?:|

Extra dosh probably.