Earth bonding regs

[VisionSet]

Earth bonding regs.

Where are they, part P doesn't seem that informative, or am I reading the wrong document?

the associated document isn't helpful either.

Failing that is there an FAQ?

-- Mike W

[Andy Wade]

Earthing and bonding (equipotential bonding, strictly) are quite separate things. The term "earth bonding" is meaningless.

The 'regs' are in BS 7671, and the IEE On-Site Guide [1] provides a convenient reference thereto.

What did you want to know?

[Andy Hall]

Part P has nothing to do with how to actually do a proper electrical installation, but rather documents the methods by which central and local government taxes your work.

The authoritative document is BS7671, aka IEE Wiring Regulations 16th Edition.

Useful for what you want is

[John White]

Yes there's lots of them depending what you are planning to do. Can you be a bit more specific please.

The document in the link is indeed the bit of the "Building Regulations 2000" that applies to "Electrical Safety - Dwellings".

Many people would say that "Part P" is the wrong document - full stop.

The requirements for earth bonding in electrical installations are set out in "BS 7671:2001 (Amended 2004)" usually called the "IEE Wiring Regulations 16th Edition".

Which document is that?

John

[VisionSet]

I want to check and if necessary replace the main bonding of electrical and rising main, gas etc. At the moment I have a bond from rising main to (I assume) distribution board. Also it was 'bonded' to a very coroded ferrous pipe that appears to be disused (old gas?) So I wan t the docs that explain how all this lot should be joined or otherwise together.

Thanks.

Mike W

[John White]

A good starting point is:

gives the earthing arrangements for most electrical supply types and is a good introduction to the subject.

It also names the parts and gives the required cable sizes.

John

[VisionSet]

> This gives the earthing arrangements for most electrical supply types

Thanks, just the job!

-- Mike W

[Christian McArdle]

However, always use the sizes specified for TN-C-S, whatever your earthing system. In the future, your supplier may upgrade your supply and it is good if your earthing is already up to spec.

Christian.