The dreaded hot tub!!

[Roberts7286]

Hi Guys

So I've never installed a hot tub supply before so take it easy on me. I've spent a bit of time researching it myself and its a minefield of conflicting information.

From what i've gathered I need to run from the DB to a rotary isolator. RCD at DB. Connect armouring of swa at DB end but not at isolator. Install earth rod at isolator. Isolator to be at least 2M from hot tub.

I've been to look at the install today and need some advice.

DB is plastic dual RCD (type AC 63A) 100A main switch.
Earthing arrangement is PME.
Hot tub is to be located just next to the conservatory at the back of the house on the patio.

Do I have to change the DB or is it a recommendation that the customer can choose to ignore for now?
Can I just upgrade the RCD's to type A?
Could I split the supply via henley blocks to a stand alone RCD unit and ignore the DB?
Do I need an RCD local to the hot tub?
What cable is used to connect from isolator to hot tub? SWA or H07RN-F flex?

I feel like I'm getting myself at it a little bit so any advice would be greatly appreciated.

Tom

 

[telectrix]

start off with ther rating of thetub. some come with a S1361 plug and a 10mA RCD, i which caae you just plug them in.

 

[sinewove]

Hi Guys

So I've never installed a hot tub supply before so take it easy on me. I've spent a bit of time researching it myself and its a minefield of conflicting information.

From what i've gathered I need to run from the DB to a rotary isolator. RCD at DB. Connect armouring of swa at DB end but not at isolator. Install earth rod at isolator. Isolator to be at least 2M from hot tub.

I've been to look at the install today and need some advice.

DB is plastic dual RCD (type AC 63A) 100A main switch.
Earthing arrangement is PME.
Hot tub is to be located just next to the conservatory at the back of the house on the patio.

Do I have to change the DB or is it a recommendation that the customer can choose to ignore for now?
Can I just upgrade the RCD's to type A?
Could I split the supply via henley blocks to a stand alone RCD unit and ignore the DB?
Do I need an RCD local to the hot tub?
What cable is used to connect from isolator to hot tub? SWA or H07RN-F flex?

I feel like I'm getting myself at it a little bit so any advice would be greatly appreciated.

Tom

If you make the install tt with a rod near to the tub,you could supply it from a separate dp rcd or a dp rcbo if you could find one to fit the board.S

 

[Baddegg]

As per @telectrix see what tub it is first….some just plug in Simple’s….if not just follow MI

 

[Roberts7286]

start off with ther rating of thetub. some come with a S1361 plug and a 10mA RCD, i which caae you just plug them in.

Sorry I forgot to mention its 32amp

 

[Dustydazzler]

With the price of electric going up through the roof , I am surprised people are still buying hot tubs

My neighbours spent£4500 on one during the lockdowns , I just went round the other day and disconnected it for them as they are getting rid of it. Its simply to expensive to run.

 

[Dartlec]

There's an excellent David Savery video on the topic which covers the various issues pretty well I think:

Possibly not one to watch with the client though due to David's unique presenting style - but also full of good information.

 

[Roberts7286]

There's an excellent David Savery video on the topic which covers the various issues pretty well I think:

Possibly not one to watch with the client though due to David's unique presenting style - but also full of good information.

Thanks for the video. pretty much exactly what I needed to know.