to bond or not to bond?

[BMelectrics]

Evening all,

I as doing a new kitchen install today, and noticed that the main incoming water supply is done in plastic.

The stopcock and pipes running out to an outside tap are in copper however.

I was wondering if it is wise to introduce a potential difference by bonding the copper sections, but the surrounding circuits in this area are rcd protected so no supplementary bonding required.

I have attached a pic, this seems to be a grey area.

Thanks in advance.

 

[IQ Electrical]

Looking at it, it's highly unlikely that you'll be needing any main protective bonding.
The leg to the tap should certainly NOT be bonded and is often fitted with a plastic insert to isolate any bonding that is required.

The kitchen is not a special location so would not need supplementary bonding anyway.

 

[Johnny-G]

Quite simply, no.
If it was a requirement to bond that set up then we'd have to bond every installation in the land, that should be a delight to see for every electrician.
I bet you ain't as lucky with the gas though.

 

[cdavies33]

Plumber needs to be shot.... (not for the use of plastic pipe though)

 

[Danboy86]

How do I post my question on here?? I have an iPad by the way

 

[Rauer]

So let me get this straight..... If the incomer is plastic, it doesn't require a 10mm bond?

 

[rich.250]

Just test between the MET and the incoming service, and if a reading greater than 23k ohms no need to bond. If less, needs bonding to bring to the same potential.... I.e less than 0.05 ohms.
Simple to do, and a guaranteed method.
GN8.
You will find a lot of services don't need bonding, as they are not a parallel path to earth.
Hope this helps

 

[BMelectrics]

thanks guys,

yeah the previous spark had taken a 6mm c.p.c from a nearby socket and bonded the copper stopcock.......This was probably unessesary.

 

[Guitarist]

What a mess....

 

[Guest55]

Diy plumbing at its best.