Quick question about bonding!

[DNS1]

Hi chaps,

Just did a "mock" EICR on a friends place and found no bonding to incoming gas and water.

Am I allowed to use a single piece of 10mm to bond both of them back to the MET, or does it have to be 2 separate runs? Fairly sure 1 run is ok, but just wanted to be sure!

Sorry for the amateurish question!

 

[rich.250]

Since when?

 

[thekingiam]

There is no limit for the resistance of main protective bonding.

got me worried then, i haven't heard of this reg either but then again ive only just got around to ordering bgb and on site guide.
i have got outside lights to do
change cu
wire in cooker( without 1 for a year now)
sockets to island and switches to lights
she just told me she wants decking outside and build a front drive gate
finish off on suite in one bedroom
put together childs playhouse

getting depressed now, a million other things as well.
and i ask her to lie on her back for twenty minutes and guess what response i get!,,,,

maybe 10 minutes

 

[IQ Electrical]

Since when?

There never was, a passage in Guidance Note 3 concerned with supplementary bonding confirmation between metallic parts is often mistaken to refer to main protective bonding-you have to read it 5 times to understand it

 

[sparks1973]

theres the adiabatic for bonding conductors in BGB

P160....

 

[telectrix]

no.. the adiabatic is for earthing conductors.

 

[sparks1973]

no.. the adiabatic is for earthing conductors.

OK Tel..no probs...

 

[rich.250]

I'll admit I was under the impression that
0.05 was considered effectively the same....
Gn3 suggests it should be around 0.05
I can see why 0.05 for earthing conductors, am
Now questioning myself and the NIC inspector.... Lol

 

[IQ Electrical]

I'll admit I was under the impression that
0.05 was considered effectively the same....
Gn3 suggests it should be around 0.05
I can see why 0.05 for earthing conductors, am
Now questioning myself and the NIC inspector.... Lol

Ask him to show you the regulation, then take a seat and watch him squirm out of it!
If he mentions GN3, ask him why it says 'between metallic parts' if it's referring to main protective bonding which would by definition only be installed from the MET to an extraneous-conductive part.

 

[sparks1973]

yep...between metallic parts would be supplementary wouldn`t it IQ....

 

[sparks1973]

now on the subject of the adiabatic....i was aware of its use for earthing....but also was under the impression that it could also be applied to bonding.....

 

[IQ Electrical]

now on the subject of the adiabatic....i was aware of its use for earthing....but also was under the impression that it could also be applied to bonding.....

Not directly but on a non-PME system the bonding can be sized from the earthing conductor which can be sized from the adiabatic.

 

[rich.250]

I was just thinking it needs to be the same potential.... I.e 0.05, like r1 and rn conductors in a RFC.
I was told it had to be 0.05 on my 2391 also, just been looking through
My Notes for the reasoning why..... Lol.
Can't find anything!

 

[Guest55]

no.. the adiabatic is for earthing conductors.

And cpc's :-D