Lacking space in the box

[uksparks]

Hi,

i need to some how get a feed to a hot tub in here too...

any thoughts?

i was thinking it may be possible to rip the existing switch fuse out and stick a mini cu in with a 63a MCB and a 32a? I need to terminate some SWA in there too.

i wont go in to the finer details but this is the only place I can get a supply from and I can't mount anything outside the box as they don't want to do that.

i just need to split the tails and put a 32A supply out to the hot tub.

 

[uksparks]

Oh and mounting it inside the house behind the box is a non starter.

 

[uksparks]

There is also no room at all in the existing cu which is in the middle of the house and verging on inaccessible and certainly not in a place to even consider routing a cable to.

 

[Dave OCD]

I'd say that if they want the hot tub they have to be realistic mate and actually make the job possible for you - the only sensible way I can see is a separate weatherproof box adjacent to the meter box to house your new switchgear.
The use of 6 x 4" or thereabouts adaptable boxes rather than the small covers you can get for the switchfuse is a bit of a bodge too.

 

[rich.250]

Could you not remove the switch fuse and adaptable boxes and fit a 2way metal Cu in its place as you suggested?
Then just gland in the SWA?


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[Leesparkykent]

I wouldn't replace the switch fuse for a CU.

 

[uksparks]

I agree removing the switch fuse for MCB wouldn't be the best thing,

I think looking at it, the only way is to go outside the box.

ok, so suppose I do that, looking at it, where would you mount Henley blocks to split the tails? I didn't think you were meant to mount in the sides.

also I think it may look a bit crap if you then take tails and earth out of the bottom then into the enclosure, so maybe it could be put in copex or something or I don't know.

 

[uksparks]

Could you not remove the switch fuse and adaptable boxes and fit a 2way metal Cu in its place as you suggested?
Then just gland in the SWA?


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i did think that but 'think' it will probably not be so straight forward as I'm unsure how the cables enter at the bottom and it will all probably go horribly wrong and I'd wished id not entertained touching it.

 

[Leesparkykent]

what about building something yourself if it will fit to replace the switch fuse. maybe an open fronted enclosure, main switch, fuse holder and another fuse holder or mcb for the hot tub. https://www.europacomponents.com/product-22x58mm-fuse-holders.html

 

[Dave OCD]

I agree removing the switch fuse for MCB wouldn't be the best thing,

I think looking at it, the only way is to go outside the box.

ok, so suppose I do that, looking at it, where would you mount Henley blocks to split the tails? I didn't think you were meant to mount in the sides.

also I think it may look a bit crap if you then take tails and earth out of the bottom then into the enclosure, so maybe it could be put in copex or something or I don't know.

With care you could probably mount the blocks in the top of the meter box to the left of the meter, the extra box could go right up tight to the side of the meter box with the tails and earth coming through the side then apply silicone to ensure a good seal.

 

[uksparks]

what about building something yourself if it will fit to replace the switch fuse. maybe an open fronted enclosure, main switch, fuse holder and another fuse holder or mcb for the hot tub. https://www.europacomponents.com/product-22x58mm-fuse-holders.html

Thats bot a bad idea Lee, I'll have a look at it on Monday and see what I can come up with. I'm sure I'll be able to get round it some how.

 

[uksparks]

With care you could probably mount the blocks in the top of the meter box to the left of the meter, the extra box could go right up tight to the side of the meter box with the tails and earth coming through the side then apply silicone to ensure a good seal.

The fuse will possibly end up falling out and the meter being moved by a fairy hard to the left hand side yet..

 

[Dave OCD]

The fuse will possibly end up falling out and the meter being moved by a fairy hard to the left hand side yet..

That may be beneficial.

 

[davesparks]

Could you not remove the switch fuse and adaptable boxes and fit a 2way metal Cu in its place as you suggested?
Then just gland in the SWA?


Sent from my iPhone using Tapatalk

An mcb isn't equivalent to a fuse so is not sensible for a straight swap

 

[rich.250]

An mcb isn't equivalent to a fuse so is not sensible for a straight swap

I know this.
If it's a small domestic house on a 63a CB would be fine.
Or just put a fuse holder in the CU as people have mentioned above.
Most manufactures list them, most take 2modules.


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[davesparks]

I know this.
If it's a small domestic house on a 63a CB would be fine.
Or just put a fuse holder in the CU as people have mentioned above.
Most manufactures list them, most take 2modules.


Sent from my iPhone using Tapatalk

How do you know that for certain without further information?

 

[uksparks]

I feel it turning into a bit of hassle as I will need to some how joint the neutral coming in to the two outgoing ways in the CU and I have a feeling it will be either 16mm or 25mm going to the fusebox in the house.

Its a 4 bed house.

Ill see what I can get, so maybe try and get a main switch, a fuse carrier and a 32A MCB in an enclosure, oh hang on, that 32A needs to be an RCBO.. damn that will take up more space.

Ill have to have a think about this.

 

[snowhead]

How about this,

Get the customer to request a smart meter or move to a supplier who will fit one.
Have the smart meter installed on left hand side and get the switch moved over as well.
Should be a lot more room to play with on the right then.

I would have thought that meter was due for a change anyway.

 

[HappyHippyDad]

I feel it turning into a bit of hassle as I will need to some how joint the neutral coming in to the two outgoing ways in the CU and I have a feeling it will be either 16mm or 25mm going to the fusebox in the house.

Its a 4 bed house.

Ill see what I can get, so maybe try and get a main switch, a fuse carrier and a 32A MCB in an enclosure, oh hang on, that 32A needs to be an RCBO.. damn that will take up more space.

Ill have to have a think about this.

That sounds perfect UK, but has anyone seen anything like this? I'd be very interested to see a picture.

I was thinking could you get rid of the isolator switch (as you have a DP switch fuse as isolator), move the switch fuse up, take feed to Hot tub, omitting overcurrent protection as feeding only a known wattage hot tub. But that wouldn't work as even if the SWA doesn't need RCD protection, the hot tub will! Also the hot tub will need local isolation, perhaps one of these which incorporates an RCD, a 32A one, not 16A as in the link Commando Switched Socket 16A 2P+E IP44 With 32A RCD | eBay
This is out of my comfort zone so just thinking out loud as it's interesting.

 

[7029 dave]

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[h=1]Protek 1 Pole Metal Clad Switch Fuse - 63A[/h]
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• 1 Pole in line fused switch
• Height: 200mm
• Width: 104mm
• Depth: 60mm
• 63A

 

[telectrix]

is this thread one which could be classed as "thinking inside the box"?

 

[londonfire]

I would try and get the meter changed to a digital meter. Would give you a tad more room

 

[londonfire]

Specially if they shift right over to the left.