Hot tubs or therapeutic spas.. Above ground- grounding question - Electrician Talk - Professional Electrical Contractors Forum
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Old 07-23-2019, 09:45 PM   #1
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Default Hot tubs or therapeutic spas.. Above ground- grounding question

So outright laziness on my part straight up yo...

I started selling hot tubs as a sideline since the old guy who used to started telling people I could fix them.. Interesting niche business but that's another story.

I'm putting in tubs with a disconnect near em.. anywhere from 29A to the more common 36A.. They work decent on a 40A breaker, I figure with 8awg copper I could upsize to 50A if I need, but I like keeping it tight on the breaker. Yes 80 percent blah blah, but it's non continuous so..

Question: the grounding for above ground tubs no longer requires a 6awg, I know that. I'm in BC and their ability to communicate amendments is a awful.. (I got another story about that and how I made it one a do not contact list as a s### disturber)

So the grounding I believe is sufficient on the 8awg teck, where is the rule to prove it?

I remember something about the size of grounding conductor being good in a teck cable. For that now but can't remember where I saw it, thank God I'm not running a 6awg 4 con anymore.

Any amendments I've missed or stuff I will get cracked down on?
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Old 07-24-2019, 12:08 AM   #2
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Originally Posted by FishinElectrcian View Post
So outright laziness on my part straight up yo...

I started selling hot tubs as a sideline since the old guy who used to started telling people I could fix them.. Interesting niche business but that's another story.

I'm putting in tubs with a disconnect near em.. anywhere from 29A to the more common 36A.. They work decent on a 40A breaker, I figure with 8awg copper I could upsize to 50A if I need, but I like keeping it tight on the breaker. Yes 80 percent blah blah, but it's non continuous so..

Question: the grounding for above ground tubs no longer requires a 6awg, I know that. I'm in BC and their ability to communicate amendments is a awful.. (I got another story about that and how I made it one a do not contact list as a s### disturber)

So the grounding I believe is sufficient on the 8awg teck, where is the rule to prove it?

I remember something about the size of grounding conductor being good in a teck cable. For that now but can't remember where I saw it, thank God I'm not running a 6awg 4 con anymore.

Any amendments I've missed or stuff I will get cracked down on?

It seems like we havent ran #6 for over 10 years I dont remember when the bonding conductor was suitable in the cable came into being .
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Old 07-24-2019, 12:33 AM   #3
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There was something about how the ground needs not be bigger than the one supplied in a multiconductor cable when wiring an above ground therapeutic hydromassage spa. Above ground factory unit being the key word.

Don't make me look this up.. I'd rather blab on a forum than do my homework 😄
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Old 07-24-2019, 12:51 AM   #4
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I’ve never had an issue in Alberta with the bonding conductor being insufficient. It outlines on I believe table 16A the sizing for bonding conductors.
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Old 07-24-2019, 01:03 AM   #5
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It seems like we havent ran #6 for over 10 years I dont remember when the bonding conductor was suitable in the cable came into being .
Yeah I'm old too. Remember before wire had a colour other than white and red? Haven't had to do many tubs though..

How do people feel about a hot tub off a subpanel fed with an ACWU? Love that Gray area of grounding.
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Old 07-24-2019, 09:24 AM   #6
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Question: the grounding for above ground tubs no longer requires a 6awg, I know that. I'm in BC and their ability to communicate amendments is a awful.. (I got another story about that and how I made it one a do not contact list as a s### disturber)

So the grounding I believe is sufficient on the 8awg teck, where is the rule to prove it?
There's a #10 bond on #8 Teck ...That's what is listed in Table 16 for the bond (68-058(4))
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Old 07-24-2019, 02:33 PM   #7
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Roger that.. Had to look it up today for another job and check the wording for " in ground pools". Customer wants to drop a hot tub 3 ft lower than grade on a concrete pad, with walls I assume to hold dirt back.

I was wondering about whether that makes it an in ground one, since the hot tub rule refers that all grounding be in accordance with 68-058.. "Permanently installed pools" is also a concerning phrase. Kinda seems like a tub is "temporary permanent"
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Old 07-24-2019, 02:42 PM   #8
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Yeah I'm old too. Remember before wire had a colour other than white and red? Haven't had to do many tubs though..

How do people feel about a hot tub off a subpanel fed with an ACWU? Love that Gray area of grounding.

Check the specs on the hot tub terminals most want copper
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Old 07-24-2019, 02:45 PM   #9
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Check the specs on the hot tub terminals most want copper
Roger that, yeah no aluminum to hot tubby tubby's... only copper. What I meant was copper tail from a subpanel fed with ACWU as in aluminum ground to panel, copper from there to tub.
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