Hot tub installation !

[electric will]

I'm sticking with tt then, trouble is there's pros and cons for either.

 

[devonsparky]

Me too 'Will' ............. and I'm going to smash up my laptop so I can't read any more messages to alter my thinking anymore !!!!

 

[SPARTYKUS]

Rcd is statistically more (much more) likely to fail than loosing the PEN.

Now I am being devils advocate!

 

[electric will]

Maybe the you should have a 100ma at main board and a 30ma at the tub Why not just drag the hot tub into the lounge?

 

[mayfair]

Your some bloody comfort

Rcd is statistically more (much more) likely to fail than loosing the PEN.

Now I am being devils advocate!

 

[Engineer54]

last hot tub i did was off TNS , didnt bother with any rods :-D

If the hot tub was located on bare ground or grass, i think i'd be also installing a rod, even if it was a TN-S supplied installation. Your still going to get a potential difference between true earth and the DNO TN-S earth.....

As for the Regs, i think they state somewhere, that a TNC-S supply can be used, for supplying hot-tubs and the like provided an earth electrode of a certain value is also provided.... I think that value was around 20 ohms, but i wouldn't swear to it...

 

[electric will]

Oh don't start this thread again! I've made up my mind with these tt all the way

 

[SPARTYKUS]

How many lost neutrals have you seen? And how long before fixed.

Me-none.

Knackered RCDs owner unaware of, prob been like it since installation by a (*cough*) electrician?

Me-about 15.

 

[Engineer54]

Oh don't start this thread again! I've made up my mind with these tt all the way

I'd probably agree with you too, especially if the Tub was located/positioned on bare ground or grass, but not with anywhere near a 200 ohm Ra value... lol!!

 

[SPARTYKUS]

I think earlier posters were trying to decide on TNCS or TT. E54 you're proposing TNCS with a back up rod as well aren't you. All connected together, so to speak.