hot tub in garage (diversity)

[scott 123]

house supply 100A tns 32A mcb feeding garage(10mm swa buried ) 100A board.. currently with lights on 6A and sockets on 20A ....customer wants massive hottub installed in garage ....problem is manual says requires 2 x 32 A supply for tub ........any suggestions ?

 

[Cadgey123]

Do you have a picture? 2 x 32amp might mean L&N conductors to the unit.

If it is only 32amp, upgrade the MCB size to the garage ( if possible, assessing conditions )

Then you can run the original stuff + Hottub

 

[DPG]

My suggestion is that their electricity bill will be huge!

 

[scott 123]

2 x 32amp might mean L&N conductors to the unit. ????

 

[scott 123]

Do you have a picture? 2 x 32amp might mean L&N conductors to the unit.

If it is only 32amp, upgrade the MCB size to the garage ( if possible, assessing conditions )

Then you can run the original stuff + Hottub

2 x 32amp might mean L&N conductors to the unit.????

 

[Cadgey123]

2 x 32amp might mean L&N conductors to the unit.????

It's hard to tell what is actually being said in the instructions. 2 separate cables or 2 separates cores? Are you an electrician?
I wouldn't imagine the thing needs 2 x 32amp supply. It's only a couple of pumps and a heating element.

 

[Deleted member 9648]

If it does need 2x32a supplies then they'll have to cough for a bigger sub to the garage or get a smaller hot tub that fits with the present supply. There's no alternatives.

 

[Deleted member 9648]

It's hard to tell what is actually being said in the instructions. 2 separate cables or 2 separates cores? Are you an electrician?
I wouldn't imagine the thing needs 2 x 32amp supply. It's only a couple of pumps and a heating element.

But OP said 'massive' hot tub......could have 2x 6kw elements.
I think we need kw rating from the OP.

 

[Cadgey123]

But OP said 'massive' hot tub......could have 2x 6kw elements.
I think we need kw rating from the OP.

True.... let's see the technical info OP. I am curious now.

 

[scott 123]

Going back 2morrow will get full specs and post them

 

[Wilko]

Going back 2morrow will get full specs and post them

Do you recall the make?
Most big ones are 32A, but there is the Michael Phelps model at 42A

 

[rolyberkin]

Don't do what I did yesterday and put it on a 6amp mcb by mistake! Should have gone to spec savers!

 

[Gavin John Hyde]

I have come across a hot tub with 2 supplies needed, was in garden of a scrap metal dealer who fancied himself as a bit of a local celeb living the big life. It needed 2 cables, cant remember what rating MCB but each cable did different things, one supply cable was the heating system and the other did pumps, sound and lights... the hot tub was like a mini swimming pool and could take several large adults or in his case young ladies charging by the hour! only learned this as he wanted sockets down by his BBQ area and had to work out why the hot tub had two supplies in the consumer unit for outdoors as it confused me and then boss no ends. I still do not see point of underwater speakers!

Just a thought on the op's post is that the hot tub could be a foreign model thats been imported as a lot of the US models are designed for multiple wires and often have 2 lives one neutral and one earth, its less likely on Uk models unless very large with separate spa/hot tub compartments within the hot tub as in my example.

 

[PEG]

Yep,that preliminary spec,sounds very American,and can usually be translated back in to our reference language,and a decision made.

 

[static zap]

.........hot tub could be a foreign model thats been imported as a lot of the US models are designed for multiple wires and often have 2 lives one neutral and one earth, its less likely on Uk models unless very large with separate spa/hot tub compartments within the hot tub as in my example.

USA alleged 240 gear - only insulated to 120v !

Inverted 120V phases (or similar, whatever correct terms are)
120-0-120 where 0 = Neutral

 

[scott 123]

black diamond spas

 

[DPG]

£13K plus an enormous electricity bill - must have some cash your customer.

 

[Wilko]

Yikes !
With 14hp of pumps and about 8kW of heating I can hear the polar bears crying already ...

 

[westward10]

Money does not buy style.

 

[Cadgey123]

Money does not buy style.

Money doesn't buy class, maybe style but defo not class.

 

[Cadgey123]

black diamond spas

View attachment 38447

That thing is huge!! And it weighs 1.5tons, they will need a massive slab for that as well

 

[westward10]

Money doesn't buy class, maybe style but defo not class.

Money just enhances you lack of style and taste come to that hence the hideous hot tub.

 

[sparksburnout]

What a load of codswallop, just to make your knob go all wrinkly. And here's the EU banning vacuum cleaners!!!!!

 

[scott 123]

How would you supply garage

 

[Octopus]

How would you supply garage

Nuclear power station?

 

[westward10]

How would you supply garage

Petrol tanker?

 

[Wilko]

How would you supply garage

I'm thinking service connector block, a 63A sw fuse, 10 or 16mm swa depending on installation method and distance. Just to try to minimise house lights dimming when warp drive is engaged.

 

[westward10]

I would tell them to better spend the money on a taste and style refining course they will then realise said hot tub and current lifestyle adornments need addressing.

 

[Dave OCD]

And you wouldn't be getting any more work there, ever.

 

[Devonchris]

It will come with 2 fly leads each with a 13A plug fitted. Double socket should do it.

 

[Gavin John Hyde]

I dont care if its classy or not but I could easily see myself sat in one of them on a nice summers day surrounded by nice women in bikinis, but then realise id have to be a drug dealer to afford it and also pay for the electric unless i bypass the meter or piggy back off the street lights

 

[Devonchris]

Yes I can picture one of those out front on the Royal Crescent next to the wheelie bins.

 

[westward10]

It is a certain class of person who have them, that being no class.

 

[Octopus]

£13K plus an enormous electricity bill - must have some cash your customer.

And I am betting they want a cheap and nasty connection ...... Because Gary down the pub says it's really easy ........

 

[scott 123]

I'm thinking service connector block, a 63A sw fuse, 10 or 16mm swa depending on installation method and distance. Just to try to minimise house lights dimming when warp drive is engaged.[/QUOTE

My problem is with overload....whenever this is on full power and house is in full use ...will it constantly trip?

 

[Gavin John Hyde]

Yes I can picture one of those out front on the Royal Crescent next to the wheelie bins.

nah you are all wrong, wheelie bins are around back of the crescent out of site of the tourists and the hotel guests. besides in bath we have naturally hot springs and a rooftop infinity pool heated by nature in the spa.. its great on a winters evening...

 

[UNG]

That thing is huge!! And it weighs 1.5tons, they will need a massive slab for that as well

More like 9.1 tons once it is filled with water

 

[Wilko]

If they've got gas heating and hot water in the house then it maybe ok - check what else is installed

 

[scott 123]

If they've got gas heating and hot water in the house then it maybe ok - check what else is installed

Nothing major 4bed house usual lights sockets cooker shower

 

[Wilko]

If they run the shower and the cooker and then fire up the Enterprise it might get a bit busy ... could be the first house to use 100A

 

[Devonchris]

I would tell them to better spend the money on a taste and style refining course they will then realise said hot tub and current lifestyle adornments need addressing.

You can take a ----- to culture but you can't make them think.

 

[scott 123]

So would any of you install this ..or tell customer he needs new supply

 

[telectrix]

i'd not do it. i like polar bears too much.

 

[Cadgey123]

So would any of you install this ..or tell customer he needs new supply

Yeah, as said in a previous post. Tap off the mains supply from the house with a switched fuse unit and supply it like that.
If they want it installed it can be done. There will be definitely be a little diversity to be applied, it won't take the full whack.

 

[UNG]

So would any of you install this ..or tell customer he needs new supply

Yes I don't see the problem that you are obviously seeing
The only issue the customer may have is when it is first filled or filled after a clean which only happens around once every 6 months with the quantity of water specified heaters could be running for couple of days or more to get up to temperature. My mates hottub takes around 1600 litres of water and takes around 18 - 24 hours to get from cold tap temperature to 40°C after a full clean.
The key to low energy use with a hottub is to keep it covered when it is not being used so the heat isn't being lost and keep the pH and chemical levels right so the water changes are kept to a minimum
The insulation on hottubs is quite good and with a cover on lose very little heat as an example a few years ago my mates tub developed a fault the outside temperature at the time was between 2°C and -2°C after 48 hours with no heaters or pumps running the water temp had dropped from 40°C to 25°C

So the biggest problem is likely to be the customer not looking after the water or using the wrong chemicals, chlorine can be very aggressive on the components in a hottub

 

[UNG]

So would any of you install this ..or tell customer he needs new supply

Yes I don't see the problem that you are obviously seeing
The only issue the customer may have is when it is first filled or filled after a clean which only happens around once every 6 months with the quantity of water specified heaters could be running for couple of days or more to get up to temperature. My mates hottub takes around 1600 litres of water and takes around 18 - 24 hours to get from cold tap temperature to 40°C after a full clean.
The key to low energy use with a hottub is to keep it covered when it is not being used so the heat isn't being lost and keep the pH and chemical levels right so the water changes are kept to a minimum
The insulation on hottubs is quite good and with a cover on lose very little heat as an example a few years ago my mates tub developed a fault the outside temperature at the time was between 2°C and -2°C after 48 hours with no heaters or pumps running the water temp had dropped from 40°C to 25°C

So the biggest problem is likely to be the customer not looking after the water or using the wrong chemicals, chlorine can be very aggressive on the components in a hottub