LPG installation, earthing

[Dannypipe]

Hi all,

I'm just pricing up a little install for a gas hob. It's an LPG installation from a change over kit.

I was wondering if I should price in to bang an earth rod into the ground, and run some 10mm3 cable to the pipe work, so it's earthed.

This isn't about equipotential bonding, which I know if I did this would be a big no, no.

But I can't see how else the hob pipe work will be earthed. Other than by the switched, fused, spur / plug - for the ignition.

Any thoughts, appreciated.

Cheers,

Danny

 

[Mike Jackson]

You could cause issues by doing that. You may have a potential difference between the two earths. The only way is to bond it properly.

 

[Dannypipe]

Yeah. This was my concern, by introducing an additional earth I won't have equal bonding. But I'm relying on the earthing of the hob electrics, to earth my pipe work. Which you wouldn't do with a natural gas install, as you'd have proper earth bonding at the meter.

Maybe I'm over thinking this, but I obviously want it to be right.

 

[Dannypipe]

BTW - I'm not supplying the hob, so have no idea of the size of the earth, but reckon it would be 0.75mm3 in the plug.

 

[mutley racers]

hey dannypipe, this has nothing to do with earthing but forgive me for interrupting this thread. A while ago in another thread (which i cannot find) you put a couple of things which you keep in the van. self tappers which i believe were from toolstation and, some brightly coloured magnetic trays. any chance you remember the product codes of these? As I cannot find the thread in which they were posted. Sorry again that this does not contribute to this thread

 

[Dannypipe]

There you go mate:

Toolstation > Automotive > Mechanics Tools > Magnetic Parts Tray Hi-Vis

 

[Dannypipe]

Here's the screws if you need em:

Toolstation > Screws & Fixings > Drywall > Drywall Screw Wafer Head Self Drill

Now someone else help with this earthing. I think I'll do without the earth rod, but want more opinions!

 

[Nostrum]

You need to earth the gas pipe at point of entry as it enters the property as you would NG Dannypipe. It is equipotential bonding as the gas pipe is in the equipotential zone (in the house) and therefore need to be the same potential as everything else. 10mm2 earth back to the consumer unit is the only way. Or you could just notify them that it has not been done to cover your arse.

 

[Mike Jackson]

I agree, you either need to get a sparky in to run an earth, do it yourself or point out that they will need to get it done.

 

[vern]

Danny as Nostrum has said, within 600 mm of entry pal, I have some pre printed cards I got from regin that I leave with the customer, informing them of the regs and to use a qualified person etc etc....

 

[Dannypipe]

That's great. Thanks everyone. I'll do as suggested and suggest a sparky runs a new earth back to consumer unit.

 

[mutley racers]

Thanks feller

 

[tamz]

I'd just pass them the card. It is outside your scope and you could introduce a potential risk. Leave it to those who know better.