Bonding of all normally non current carrying metal parts within 5’ of the edge of an indoor spa question

[2l84me1]

I have a customer who wants power ran to a hot tub located in their screened in porch enclosure. The framing/flashing of the screened in porch & the roof is sheet metal - and is within 5’ of the inside edge of the spa.
Would it be acceptable to bond these metal parts together then terminate it into the 50a sub panel feeding the spa?

Thanks

 

[Little Bill]

I have a customer who wants power ran to a hot tub located in their screened in porch enclosure. The framing/flashing of the screened in porch & the roof is sheet metal - and is within 5’ of the inside edge of the spa.
Would it be acceptable to bond these metal parts together then terminate it into the 50a sub panel feeding the spa?

Thanks

You would need to take the bonding down to the bonding lug on the spa. Not required to go to the subpanel.

 

[2l84me1]

Thanks. Per 680.43 exception no.3
I myself would consider the hot tub on a screened in porch enclosure “indoor” and above a finished grade.
So no need for an equipotential bonding grid, just bonding all normally non current carrying metal within 5’ of the inside edge back to the bonding lug in the listed hot tub enclosure.
Does this sound accurate?

 

[Fred B]

Building codes considers a screened in porch, deck, patio if it only has screens and not "solid windows and doors" to be outdoors. That to me says the 680.42 is the requirements, not 680.43.

 

[2l84me1]

Building codes considers a screened in porch, deck, patio if it only has screens and not "solid windows and doors" to be outdoors. That to me says the 680.42 is the requirements, not 680.43.

Okay but how would you install an EQB ground ring around a hot tub sitting on an old concrete/tiled slab on the screened in porch

 

[kwired]

Okay but how would you install an EQB ground ring around a hot tub sitting on an old concrete/tiled slab on the screened in porch

See 680.42(B) If a packaged spa (sounds like it likely is) and you meet the four conditions mentioned (most packaged spas do) then no equipotential bonding of perimeter surfaces is required.

 

[2l84me1]

See 680.42(B) If a packaged spa (sounds like it likely is) and you meet the four conditions mentioned (most packaged spas do) then no equipotential bonding of perimeter surfaces is required.

What are we considering a perimeter surface, horizontal surfaces I.e slab, or grade? Or do vertical surfaces like columns, walls, sheet metal flashing for screens count as perimeter surfaces?

 

[2l84me1]

Look, I tapped a few lay in lugs onto the sheet metal framing within 5’ of the inside edge of the tub & ran a #8 to the ground bar in the packaged spa controller where the internal components are all bonded.

 

[2l84me1]

Look, I tapped a few lay in lugs onto the sheet metal framing within 5’ of the inside edge of the tub & ran a #8 to the ground bar in the packaged spa controller where the internal components are all bonded.

Can’t see the necessity of taking a concrete saw and destroying someone’s tile and slab to get a piece of #8 around the tub. You’re talking about thousands of dollars worth of tile and concrete repair.

 

[kwired]

What are we considering a perimeter surface, horizontal surfaces I.e slab, or grade? Or do vertical surfaces like columns, walls, sheet metal flashing for screens count as perimeter surfaces?

Possibly a good question.

Can’t see the necessity of taking a concrete saw and destroying someone’s tile and slab to get a piece of #8 around the tub. You’re talking about thousands of dollars worth of tile and concrete repair.

Shouldn't have to if a listed packaged spa and meets requirements I mentioned in 680.42(B). vertical surfaces could be questionable though, especially within a certain reach zone that I made no effort to try to find but guessing maybe 5 feet.