No enough space in the meter box

[Igor Taranenko]

Hi All,

I'm looking for some advice.

I have started wiring up an extension which consist of cooking circuits, 2 ring and 2 light circuits.

I will be installing 16mm SWA as a supply from existing meter box to the new consumer unit. Its about 7-8 meters run.

There isn't much space in the meter box (picture provided) to connect SWA and fit overcurrent protection. Only just enough space for Henley block to split supply. I'm thinking to get 3 module enclosure.

3 Way Metal Enclosure c/w Din Rail | Hager (IU3)

And fit 100A isolator with 63A mcb to provide overcurrent protection for extension supply.

Now I'm thinking to get ip rated enclosure

Metal Enclosure IP65 300mm x 250mm x 150mm - Galvanised Steel -Due 25th Aug

It will be fitted on top of existing meter box and inside new enclosure i have enough space for 3 module unit and SWA connection.

What would normally you have done in this case where not enough space in the meter box?

And would you gland SWA directly into outside enclosure or some adaptable box?

Much appreciated

 

[telectrix]

move that sillt white box (transmitter??) that's on a fly kead to the smarty meter, stick it on the left hand side wall of the meter box with those sillylabels.

 

[Igor Taranenko]

move that sillt white box (transmitter??) that's on a fly kead to the smarty meter, stick it on the left hand side wall of the meter box with those sillylabels.

I was thinking about it but it will require to cut the seal and still don't think will be enough space to fit Henley and small cu for extension supply.

 

[westward10]

What is wrong with the existing consumer unit, no spare ways?

 

[buzzlightyear]

And fit 100A isolator with 63A mcb to provide overcurrent protection for extension supply.

not a switch fuse then .

 

[littlespark]

Are we allowed to put stuff in the meter box?
What’s the space like around the consumer unit?

 

[buzzlightyear]

MCG 100A SP+N Metal Switch Fuse city elec​

 

[Igor Taranenko]

There in no spare ways in existing CU. Now client wants supply to the shed in the future. So I'm leaning for option of getting another meter box where I will have enough space for the extension's isolator with fuse/mcb and same thing for the shed supply in the future

 

[westward10]

Replace the existing consumer unit with a larger unit.

 

[buzzlightyear]

There in no spare ways in existing CU. Now client wants supply to the shed in the future. So I'm leaning for option of getting another meter box where I will have enough space for the extension's isolator with fuse/mcb and same thing for the shed supply in the future t

That would be the best option then trying to put a python in a box.

 

[kropaske]

Can you split tails next to the CU and fit your gear there?

 

[Igor Taranenko]

Can you split tails next to the CU and fit your gear there?

It's about 3-4m away, will check tomorrow

 

[Gavin John Hyde]

I queried something with the tech team at the niceic regards fitting a din rail enclosure in a tight spot for an ev charger.
They said it was acceptable to use a double pole mcb in a small din rail enclosure. As it meets the requirements of bs7671 for isolation and switching.
You can fit a henley block and din rail enclosure and 2 core 16mm swa in there if you plan it well. Maybe even 16 t and e then onto enclosure directly below the meter cabinet?

Its a ssen cut out based on photo so you are allowed to pull the fuse if in a scheme.

 

[telectrix]

so it's £500+ a year to cut a seal. the seal fairy just wants a kiss and a hug. i know what i prefer. ?

 

[buzzlightyear]

so it's £500+ a year to cut a seal. the seal fairy just wants a kiss and a hug. i know what i prefer.

a big lip sucker on those rosey lips. Lol.

 

[Igor Taranenko]

It's about 3-4m away, will check tomorrow

Thank you

I queried something with the tech team at the niceic regards fitting a din rail enclosure in a tight spot for an ev charger.
They said it was acceptable to use a double pole mcb in a small din rail enclosure. As it meets the requirements of bs7671 for isolation and switching.
You can fit a henley block and din rail enclosure and 2 core 16mm swa in there if you plan it well. Maybe even 16 t and e then onto enclosure directly below the meter cabinet?

Its a ssen cut out based on photo so you are allowed to pull the fuse if in a scheme.

Thanks for the informative response. I'm thinking to get 3 core SWA 16mm into the new meter box and make off at small cu inside (2 or 3 module one). There isn't much choice of DP MCBs, only one I've found is 63A Double Pole 10kA B Curve MCB - https://www.cef.co.uk/catalogue/products/1521611-63a-dp-10ka-type-b-mcb

Meter tails from Henley block (from existing meter box) up to the new meter box and straight into small cu

 

[westward10]

This is a lit of hard work for four new circuits. Don't you have the option of upgrading the existing CU.

 

[Igor Taranenko]

Client wants a separate CU with meter reading for that to keep track of consumption. Also existing CU is pretty loaded already with shower, cooker and few ring circuits. No an option in this case

 

[buzzlightyear]

Thanks for the informative response. I'm thinking to get 3 core SWA 16mm into the new meter box and make off at small cu inside (2 or 3 module one). There isn't much choice of DP MCBs, only one I've found is 63A Double Pole 10kA B Curve MCB - https://www.cef.co.uk/catalogue/products/1521611-63a-dp-10ka-type-b-mcb

It will save all the hassle trying to put in a switch fuse . Some of those metel boxes are quite big except the Wylex plastic ones.