Outbuilding wiring advice

[Dieseldonkey]

Looking for some advice from any electricians on the forum.

Currently got a shed that has it's own distribution board, with supply via an armoured cable, from the house consumer unit.

We've got second hut on order just now.

Question is, can armoured cable be daisy chained from my shed consumer unit to another consumer unit in the the hut? Would this be compliant with current regs? Or does the hut need to be supplied separately from the house consumer unit on its own?

 

[Liggo]

This idea is ok to do, to loop off the original supply, though of course its work that is under the Part P regulations, and should be done by a qualified competent person.
Just saying, as I would be shot down otherwise.

 

[ei-aprilia]

This idea is ok to do, to loop off the original supply, though of course its work that is under the Part P regulations, and should be done by a qualified competent person.
Just saying, as I would be shot down otherwise.

Part P is South of the border, judging by Diesel donkeys avatar he's in Lothian.

No problem at all taking the supply from your shed consumer unit as long as the supply cable feeding the shed is able to take the extra load and everything is fused correctly. I'm up near Perth if you need any further advise pm me and we can discuss over the phone.

 

[Murdoch]

It all depends on the design load of the combined 2 sheds ....... to begin with, what is the rating of the circuit breaker in the house fuseboard and how big is the cable from the house to the shed?

 

[Dieseldonkey]

Part P is South of the border, judging by Diesel donkeys avatar he's in Lothian.

No problem at all taking the supply from your shed consumer unit as long as the supply cable feeding the shed is able to take the extra load and everything is fused correctly. I'm up near Perth if you need any further advise pm me and we can discuss over the phone.

It all depends on the design load of the combined 2 sheds ....... to begin with, what is the rating of the circuit breaker in the house fuseboard and how big is the cable from the house to the shed?

Thanks Chaps. Very kind of you to offer @ei-aprilia . Good guess, just north of the bridges on the Fife side of the river. The breaker in the house is 32amp. I'll need to examine the armoured cable to confirm its cross section. The shed itself only has a fluorescent tube and a double socket in play just now. Its really only used for storage, although long term I'll hopefully turn into more of a workshop. Don't anticipate big electrical loads in there though.

The hut on the other hand is little different. It's a grillkota. However we're not having a BBQ set up. Instead want to use it for a lay-z- spa and a christmas time dinning pod. The lay-z-spa is rated at 2050w. Plus maybe 1000 watts for occasional use items and lighting. So combined, thinking around 14 amps. Also having to consider what's the safest way for it be wired. It's an outbuilding as opposed to a bathroom but it's going to have nearly 1000 litres of water contained in an inflatable. So thinking the mounting of anything electrical needs to be a height. Wondering about appropriate IP ratings and/or cord pull type switches and outdoor sealed sockets.
Current set up...

Looking to upgrade to...

 

[Murdoch]

Shed, garden, water, family - my advice would be use a spark

 

[ei-aprilia]

Armoured cables have number of cores and csa written on them every meter or so. Sometimes difficult to read though. If you are on a 32A fuse in the house I'd expect to see at least a 6mm cable out to your shed if not bigger. That should be able to cope with your extra load. Good idea to get an electrician involved if you're not sure.

 

[Loz]

We have a spa outside my shed and due to the distance from the house, the shed needs it's own "earth domain" 2 core armoured out to the shed (sized according to load and length) with a 40A breaker, then into a consumer unit with an earth spike outside. The board is an RCBO board with 4 circuits; lights, ring for the shed, 16A rcbo for the spa and a radial circuit (16A) down the wall to a waterproof box for the pond etc.

 

[Dieseldonkey]

Thanks for that @Loz .

Quarter of a century's past since I did an apprenticeship that incorporated basic domestic wiring, so things have moved on a bit. Discovered this chaps YT channel. Sent me off to the wardrobe to find the appropriate anorak. It's one of those channels you love to hate as once you've viewed one of his videos, you notice a link to something else that he's done, that irritatingly, also then twigs your interest. Such as this one on outbuilding earthing...

 

[Phil_G]

JW does some good safety teardowns and comparisons of identical looking, but actually chalk & cheese equipment, all nicely presented and nerdily absorbing

 

[Murdoch]

interesting video, a bit misleading at points imho, and makes no mention of circuit protection, Volt drop, maximum design load, inspection, test or part p if you are in England or Wales ....

 

[DaveD]

I'm doing a similar project but my electrical knowledge isn't up to the job so I've got a qualified electrician in, on the bright side I'm saving a "shed load" of money by doing all the manual work, i.e digging a 30 metre long trench, ripping up the patio, etc.
I need to know that in the event of an insurance claim the insurance company won't have the easy opt out of saying, quite rightly, "you're not a competent qualified electrician"!

 

[Murdoch]

I'm doing a similar project but my electrical knowledge isn't up to the job so I've got a qualified electrician in, on the bright side I'm saving a "shed load" of money by doing all the manual work, i.e digging a 30 metre long trench, ripping up the patio, etc.
I need to know that in the event of an insurance claim the insurance company won't have the easy opt out of saying, quite rightly, "you're not a competent qualified electrician"!

My quote for these sort of jobs ALWAYS exclude ground works ...........