Gas bond, plastic pipe but metal into properly

[Julie.]

That bit of metal leaving the house and the fact that the meter is below ground is whats causing me some debate, hence the question to see what people thought.
I'm sure I could bond it, there is always a a way.

But if the copper pipe goes through a solid floor, then bond is required at the point it enters the property from this solid floor, not at the meter

 

[DPG]

But if the copper pipe goes through a solid floor, then bond is required at the point it enters the property from this solid floor, not at the meter

I think the copper pipe just goes straight through the wall though, and not via any solid flooring?

 

[Julie.]

I think the copper pipe just goes straight through the wall though, and not via any solid flooring?

"The customer doesn't want the disruption as there is a bathroom between and a semi solid floor"

From the original post.

Ps. Why can't I quote from the original post - I can from all the replies?

 

[DPG]

"The customer doesn't want the disruption as there is a bathroom between and a semi solid floor"

From the original post.

Ps. Why can't I quote from the original post - I can from all the replies?

Mmm, not clear on this. I thought he meant the solid floor was the reason he couldn't get the bond from the consumer unit to the outer wall. Could be wrong. But the airbrick suggests floating floor where the pipe enters.

 

[pc1966]

If the first place that the gas pipe is meaningfully accessible is after the solid floor (and before connection to something or a branch to more somethings such as boiler, cooker, etc,) that would be a reasonable place to bond.

AFAIK all internal gas pipe work is metal, not necessarily designed for good electrical bonds, but almost certainly a decent conductor so a bond there should do the job of ensuring the gas appliances remain at the same potential as the house CPC system and you don't roast the boiler's 0.75mm CPC under open-PEN cases, etc, etc.

 

[pc1966]

(Need to remove the boiler earth etc as the interior pipework is likely to make a circuit via the CPC to the boiler, gas fire, cooker etc - for the test only)

I suspect that is often impractical as older systems have metallic pipes for hot/cold water so I really doubt you could truly electrically isolate a gas boiler's supply pipe without the assistance of a wet pants.

 

[Julie.]

I suspect that is often impractical as older systems have metallic pipes for hot/cold water so I really doubt you could truly electrically isolate a gas boiler's supply pipe without the assistance of a wet pants.

Possibly, however the only connections between the hws and incoming water is often at the header tanks (often plastic so isolated) and where there is a mixer tap (or steel sink), or of course supplementary bonding.

So yes there is sometimes no realistic way of checking without disconnecting far too many paths to be worthwhile.

 

[Cagethethird]

Mmm, not clear on this. I thought he meant the solid floor was the reason he couldn't get the bond from the consumer unit to the outer wall. Could be wrong. But the airbrick suggests floating floor where the pipe enters.

The term "semi solid floor" came from the customer. I got the impression he meant a concrete floor but agree the airbrick would indicate otherwise. He could of meant dwarf walls below...
I would agree it looks like its going in above the floor. There were units along the wall behind so I did not get a proper look
I will be going back to do some work (likely in January) and bonding this if it turns out it needs it.
Further investigation is definitely required on all aspects.

 

[BiddeldyBwah]

From what i can see, metal comes out into a meter that looks to be sat in a literal hole in the ground.

I would bond it.

 

[LastManOnline]

From what i can see, metal comes out into a meter that looks to be sat in a literal hole in the ground.

I would bond it.