Can you install a sub main in a meter box

[tom79bmth]

Just a quick question as title says are you aloud to install a sub main for a house inside the outside meter box, they are meant to be waterproof ??

Thanks

 

[Engineer54]

First off, ....what do you mean by ''Sub-Main'' ??

 

[tom79bmth]

A metal clad box with 100amp double pole switch, with 80 amp fuse which will be in meter box and run to the main consumer unit in swa which is more than a 3 meter run of tails it's about 10 meters away. Hope that makes sense

 

[GLENNSPARK]

rite....so what your really in about is a KMF...as the length of run if the tails is more than 3 meters...

as long as the KMF is accessable then i would say it was OK.....

whats the earthing arrangements and will this `sub` be passing through any insulation...or though any stud walls/buried?

 

[Engineer54]

OK understandy now, lol!!

If you have enough room in the external meter cabinet, there shouldn't be a problem, though you'll need the DNO to connect the switch fuse to their supply.

 

[GLENNSPARK]

OK understandy now, lol!!

If you have enough room in the external meter cabinet, there shouldn't be a problem, though you'll need the DNO to connect the switch fuse to their supply.

nien nien sir!!...

the energy supplier to their metering equipment...

 

[tom79bmth]

Hi thanks for your reply just that DNO guy said your not allowed but what do they know, I have done it a few times in the past when I was apprentice with my old company and couldn't see a problem with it but the dno guy told the customer and the dno I always right in there eyes

It,s a tncs system all earthing is correct

it's not going to be concealed cable but I prefer to run in swa just because of the load rather than use t&e and separate earth

Thanks for your help

 

[Engineer54]

nien nien sir!!...

the energy supplier to their metering equipment...

OK, whoever then!!

I get totally confused with who's responsible for what, since the disappearance of the Regional Electricity Boards, in favour of the private companies... I would have thought the switchfuse was installed ''After'' the meter equipment rather than before??

Besides, a switchfuse should have been provided by the energy supplier if it is/was known at the design stage, that the tails are going to be over 3 metres in length, after all it's their rule. (for want of a better word!!)

 

[GLENNSPARK]

Hi thanks for your reply just that DNO guy said your not allowed but what do they know, I have done it a few times in the past when I was apprentice with my old company and couldn't see a problem with it but the dno guy told the customer and the dno I always right in there eyes

It,s a tncs system all earthing is correct

it's not going to be concealed cable but I prefer to run in swa just because of the load rather than use t&e and separate earth

Thanks for your help

would you say this was a true statement?

do you think that an SWA negates the use of RCD if the cable was buried within walls etc?

 

[Knobhead]

This is something that baffles me.
The householder pays for the box and the DNO/supply companies think they can dictate what is installed in the box.

 

[GLENNSPARK]

OK, whoever then!!

I get totally confused with who's responsible for what, since the disappearance of the Regional Electricity Boards, in favour of the private companies... I would have thought the switchfuse was installed ''After'' the meter equipment rather than before??

Besides, a switchfuse should have been provided by the energy supplier if it is/was known at the design stage, that the tails are going to be over 3 metres in length, after all it's their rule. (for want of a better word!!)

sorry eng...i couldn`t help it...lol...

to the OP:

just who owns the meter box?...the DNO?

- - - Updated - - -

This is something that baffles me.
The householder pays for the box and the DNO/supply companies think they can dictate what is installed in the box.

exactly....its a farce...

 

[Des 56]

The last one I did,the DNO or meter company or whoever it is in these complicated days
The man installing the gubbins asked me politely if it would be ok for him to move my Kmf a little

I said yes if you must,there's a good lad he was

 

[tom79bmth]

would you say this was a true statement?

do you think that an SWA negates the use of RCD if the cable was buried within walls etc?

Yes if is in the correct zones and is a sub main, or am wrong and why ???

 

[GLENNSPARK]

Yes if is in the correct zones and is a sub main, or am wrong and why ???

lol....the point i was making was that generally an SWA should be the cable of choice..

i was being sarky....

 

[mechelec]

Be warned the meter fitters will look for any excuse not to fit a meter. If you can be on site when they are coming I would be.