Garage earth

[Pat H]

I'd run the SWA as 3 core with it's own earth core as well as the SWA steel earthed. I can't see a local earth rod would be a problem and adds an extra bit of protection but the chance of a lose of your earth is very slim.

 

[Pat H]

What CSA is the SWA you've run? Just curious what volt drop you may get.

 

[Barry White]

FYI , all of you !
I don't use plastic unless it's absolutely necessar. That's because it's crud !

You've all been very helpful, thank you. I knew however, that it would turn to this, pathetic immature behaviour !

There's enough on the other side. I thought over here I'd find intellectual conversation, alas ''twas not to be

 

[Last plumber]

What CSA is the SWA you've run? Just curious what volt drop you may get.

I'll look this weekend and let you know, it was four years ago I ran it. Just left garage end in a submarine.

 

[Bobster]

I was recommended to:-
Terminate the SWA in a box ( plastic)
Continue through into another box with just L + N
Install an earth rod
Connect all earths in garage to that rod
Test the earth resistance through the ground.

I see the aim but I didn't think it was as safe as how I was going to do it

I know if you lost your incoming neutral you in effect have lost earth too in theory but how likely is that ?
Is it not more likely that your earth rod will be a poorer earth during the devastatingly long hot summers of Lancashire ?

What part of Lancashire are you talking about, all it does where I live is bloody rain!

 

[telectrix]

FYI , all of you !
I don't use plastic unless it's absolutely necessar. That's because it's crud !

You've all been very helpful, thank you. I knew however, that it would turn to this, pathetic immature behaviour !

There's enough on the other side. I thought over here I'd find intellectual conversation, alas ''twas not to be

call that immature? you ain't seen me get started.. .

 

[LeeH]

Install a 10mm 3c SWA. You will then have your bonding conductor, suppliers earth and capacity to run what the hell you like in there.

Future proof.

EDIT - just read it's already in...

 

[bigspark17]

I was recommended to:-
Terminate the SWA in a box ( plastic)
Continue through into another box with just L + N
Install an earth rod
Connect all earths in garage to that rod
Test the earth resistance through the ground.

I see the aim but I didn't think it was as safe as how I was going to do it

I know if you lost your incoming neutral you in effect have lost earth too in theory but how likely is that ?
Is it not more likely that your earth rod will be a poorer earth during the devastatingly long hot summers of Lancashire ?

If you lost supply neutral you wouldnt just lose your neutral your neutral and earth would become live! What is the structure of your garage block? The garage door would not be classed as extraneous!

 

[Last plumber]

Concrete.

If the neutral was lost though, ( and I get what you're saying ),
Under those circumstances, if someone touched something that was earthed I.e. Metal light switch , whilst lights switch was closed, the RCBO would trip ?

Or have I missed a point here ?

 

[westward10]

Stop worrying about lost neutrals.

 

[Midwest]

Stop worrying about lost neutrals.

Quite right, it's the DNO's responsibility. If they've been carless and lost em, its down to them to find them

 

[bigspark17]

Stop worrying about lost neutrals.

What a rediculous comment. You design your installation upon certain circumstances and lowering risk to end user, well i would have thought most would....

 

[Midwest]

Think Westwood is making the point it's beyond you control, unlikely to happen and if it does the DNO would be all over it like a rash

 

[bigspark17]

It is the DNO responsibility but your installation would be affected you should definatly be concerned by it, im affraid ive seen tappins on trannies rust and connections on poles degrade it does happen and the DNO are oblivious to the situation intil some1 reports it, and its us they will phone before DNO. Shocking to think that some profesional hold so little regard to a very dangerous situation!

 

[westward10]

It is the DNO responsibility but your installation would be affected you should definatly be concerned by it, im affraid ive seen tappins on trannies rust and connections on poles degrade it does happen and the DNO are oblivious to the situation intil some1 reports it, and its us they will phone before DNO. Shocking to think that some profesional hold so little regard to a very dangerous situation!

Holding little regard, not me. Since PME became common practice back in the seventies mainly as a cost cutting exercise the problems of a lost neutral was deemed an acceptable risk. If correct bonding/earthing is in place within a premises the loss of a neutral should cause no hazard, there is a risk however if someone were in contact with any part of the internal earth and true earth outside. The loss of a neutral is slim but possible, it as also possible Kelly Brook will knock at my door tonight to massage my feet. The garage the op talks of has no requirement for bonding and the only risk should the loss of neutral occur is if he is touching the internal earth with true earth, an acceptable risk.