Portable spas again

[Oakey]

I need some help guys. I try not to get involved with pools or spas anymore and I know this has been discussed before so I'll keep it short.
A customer I have wants to buy an outside spa specifcally this one they say is portable http://www.aah-spas.com/ebydrpespa.html <-please take a look.

110 volt plugs into wall outlet etc,sucks up about 11.5 amps at 1.5 HP
1) Is this considered portable and do I need to meet the requirements of 680.42?
2) There is an existing concrete slab in this application do I need a bonding grid to it?
3) Is a dedicated circuit on a gfi single breaker all I need?
4) There will be a spa pad under the unit, does that change my bonding?
Thanks for any help.. with all the changed to spas and pools I'm not sure about this application.

 

[George Stolz]

Disclaimer: I don't do pools much, and I've never seen one of these. After everything I say, add a "consult your AHJ rather than listen to me" at the end.

1) Is this considered portable and do I need to meet the requirements of 680.42?

I don't see any relief for a portable spa. It sounds like they are constructing a permanent setup for an appliance billed as a portable spa, but where the rubber meets the road it really sounds permanent. Consult...

2) There is an existing concrete slab in this application do I need a bonding grid to it?

Or build a wood deck, yes, IMO. Consult...

3) Is a dedicated circuit on a gfi single breaker all I need?

It looks like it.

4) There will be a spa pad under the unit, does that change my bonding?

Here's proof of my first statement: What's a spa pad?

The equipotential bonding is three feet wide to give people half a chance to raise up from their low saturated resistance. If the pad is literally under the spa, it's irrelevant.

Thanks for any help...

Well, that's all you got, was "any."

 

[Oakey]

Every bit of info def helps and is appreciated. Thanks for the reply George.

 

[QES]

yes, this spa does fallen into the 680. Portable or Perm. 240 or 120 its still a spa.

 

[Bea]

1)680 applies

2)concrete pad is existing no rebar exposed no need to bond

3)Dedicated circuit and GFCI protection required

4)spa is list and self contained no additonal bonding required

 

[George Stolz]

2)concrete pad is existing no rebar exposed no need to bond

Code reference?

 

[Oakey]

This is actually my big question. If a pad is existing are we or are we not required to create a bonding grid in the pad. If so how? Seen it discussed before here but don't understand it clearly .

 

[Oakey]

Ok I'll make it easier of a question,.
1) If a spa is placed on dirt or rocks do I need a grid?
2) If it's placed on pavers with no mesh under it is it still required?
Answer this and I promise I'll be quiet

 

[rcarroll]

Answer 1- no. Answer 2- yes. '05 NEC 680.26(C). Now be quiet

 

[guschash]

680.26

680.26

In 680.26(B)(1) Metallic Structural Components in that paragraph .....Where reinforcing steel of the pool shell or the reinforcing steel of coping stones and deck is encapsulated with a nonconductive compound or another conductive material is not avaiable,provisions shall be made for an alternative meansto eliminate voltage gradients....etc.. I think if there is concrete pad already there you don't have to bond the existing grid, MPO.

 

[M. D.]

http://www.mikeholt.com/newsletters.php?action=display&letterID=44#addComments

Reading this may help , also notice the response to the first comment.