Outdoor hot tub and distance from house

[dm9289]

The hot tub would be outside on an existing concrete slab. Could this hot tub be placed 1ft away from the houses exterior brick wall. I think no based on 680.42(B)4. This person does not have many other placement options to get what I believe to be the required 30". I seen many hot tubs installed like this and was wondering if I was misunderstanding the content or was missing an exception.

Thank you in advance

 

[Eddie702]

This probably gets violated all the time. A Brick wall would I think be considered grounded so it sounds like a violation to me.

 

[dm9289]

This probably gets violated all the time. A Brick wall would I think be considered grounded so it sounds like a violation to me.

i agree its likely a violation "any perimeter surfaces" but this could be hard on the customer. they may have to add to their pad.

 

[Little Bill]

I don't think that applies to a brick wall. The rule is to exempt the tub from needing the equipotential bonding. If the tub didn't need the bond if it was 18" more out, I wouldn't think it would need it where it is. I don't think you would find any stray voltage on a brick wall.

 

[letgomywago]

Metal siding id say it'd need bonded. Brick no I wouldn't bother.

 

[Fred B]

Brick wall, concrete pad or wall, is one anymore or less conductive?
Is the brick wall all the way to concrete foundation or floating like siding with no contact to the "earthed" concrete anywhere?
Is hot tub an isolated system type or does it have metal parts that should be bonded and needing an EP bond?

Review 680.
680.42(B) has some specific criteria related to EP bonding of hot tub.

First requirement to meet if you don't want or have EP Bonding:
680.42(B)(1)
The spa or hot tub shall be listed, labeled, and identified as a self-contained spa for aboveground use.

 

[dm9289]

I don't think that applies to a brick wall. The rule is to exempt the tub from needing the equipotential bonding. If the tub didn't need the bond if it was 18" more out, I wouldn't think it would need it where it is. I don't think you would find any stray voltage on a brick wall.

My guess is the concern you can touch the wall from inside the tub. I think thats where the 30" comes from.

 

[dm9289]

Brick wall, concrete pad or wall, is one anymore or less conductive?
Is the brick wall all the way to concrete foundation or floating like siding with no contact to the "earthed" concrete anywhere?
Is hot tub an isolated system type or does it have metal parts that should be bonded and needing an EP bond?

Review 680.
680.42(B) has some specific criteria related to EP bonding of hot tub.

First requirement to meet if you don't want or have EP Bonding:
680.42(B)(1)
The spa or hot tub shall be listed, labeled, and identified as a self-contained spa for aboveground use.

Probably similar conductivity

The brick wall is touching see pics

It is a packaged unit

If you look at the conditions for equipotential bonding there are 4 and you must meet all 4 680.42(B)(1) is met but condition 4 is not met.
I understand your point about related conductivity but a slight difference in potential could cause shock related injury. In (B)(4) it does not seem to specify material type so i guessed any material. Maybe i am just reading to much into this.

Thank you for your input its apreciated

 

[dm9289]

Brick wall, concrete pad or wall, is one anymore or less conductive?
Is the brick wall all the way to concrete foundation or floating like siding with no contact to the "earthed" concrete anywhere?
Is hot tub an isolated system type or does it have metal parts that should be bonded and needing an EP bond?

Review 680.
680.42(B) has some specific criteria related to EP bonding of hot tub.

First requirement to meet if you don't want or have EP Bonding:
680.42(B)(1)
The spa or hot tub shall be listed, labeled, and identified as a self-contained spa for aboveground use.

 

[Buck Parrish]

It looks like they used #2 SER AL coming out of the meter. I'd pull that meter off and install a 200A meter combo there. Then feed the tub from that location refeed the house with a 100.

 

[Little Bill]

Probably similar conductivity

The brick wall is touching see pics

It is a packaged unit

If you look at the conditions for equipotential bonding there are 4 and you must meet all 4 680.42(B)(1) is met but condition 4 is not met.
I understand your point about related conductivity but a slight difference in potential could cause shock related injury. In (B)(4) it does not seem to specify material type so i guessed any material. Maybe i am just reading to much into this.

Thank you for your input its apreciated

Your initial description and the pics do not match. You didn't mention a retaining wall, just the house exterior wall. This could change the requirements, as the tub wouldn't be 28" above the retaining wall or grade that it is containing.

 

[dm9289]

Your initial description and the pics do not match. You didn't mention a retaining wall, just the house exterior wall. This could change the requirements, as the tub wouldn't be 28" above the retaining wall or grade that it is containing.

yes I am heading there now to take more pics and get location clarified. If its by the wall it seems like a no good not even marginal anymore