hi, thanks for replies about my q about bonding the water supply.

Now, how about radiators? The CH was all copper pipe, with the pipes
all bonded together at the boiler (upstairs), no other bonding.
I've replaced CH pipes between upstairs and downstairs with plastic, so
now the downstairs pipes and rads (just 1 in each of 2 rooms) have no
connection to earth.

What's required? Anything? A bond to the pipework somewhere to earth
the downstairs section? Bonds between in and out at each rad?

Bonding to the electricity supply in the room seems to be bathroom
only, as far as i can see.

cheers,

rob.

wrote in message
oups.com...
hi, thanks for replies about my q about bonding the water supply.

Now, how about radiators? The CH was all copper pipe, with the pipes
all bonded together at the boiler (upstairs), no other bonding.
I've replaced CH pipes between upstairs and downstairs with plastic, so
now the downstairs pipes and rads (just 1 in each of 2 rooms) have no
connection to earth.

What's required? Anything? A bond to the pipework somewhere to earth
the downstairs section? Bonds between in and out at each rad?

Bonding to the electricity supply in the room seems to be bathroom
only, as far as i can see.

cheers,

rob.


Equipotential bonding only applies to bathrooms in your case.
The principle being; to ensure that all relevant metalwork is at the same
electrical potential, to avoid the risk of shock in this high risk area, see
this article: -

http://www.iee.org/Publish/WireRegs/..._to_bond .pdf

Jaymack

thanks.
That document seems to mostly discuss bathrooms, so I wasn't sure about
my case.

so, to be clear: i have 2 steel radiators in separate rooms, connected
to each other with copper pipe but isolated from the rest of the system
by plastic pipe, and no bonding is required.

cheers,

rob.

On 21 May 2006 01:15:01 -0700 someone who may be
wrote this:-

I've replaced CH pipes between upstairs and downstairs with plastic, so
now the downstairs pipes and rads (just 1 in each of 2 rooms) have no
connection to earth.

The pipes to the radiators presumably run where you cannot see them
and it may be the case that an electric cable is slowly melting
against one of the pipes out of sight and out of mind.

What's required?

I would make a connection between the start and finish of the
sections of plastic pipe, using the same size of cable as is used on
the bonding to the heating system.


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54