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#67437 - 07/05/06 04:20 PM Hot tub tragedy averted  
Jps1006  Offline
Joined: Jan 2004
Posts: 615
Northern IL
This link is to a video story (high speed needed?)(sorry about the commercial)

680.41 Emergency Switch for Spas and Hot Tubs.
A clearly labeled emergency shutoff or control switch for the purpose of stopping the motor(s) that provide power to the recirculation system and jet system shall be installed at a point readily accessible to the users and not less than 1.5 m (5 ft) away, adjacent to, and within sight of the spa or hot tub. This requirement shall not apply to single-family dwellings.

Makes one think the last sentence should be deleted.

On a slightly different topic, how would you rule on a townhome where the hot tub is in the unit owner's "back yard"? I have assumed in the past that the intent in single-family dwellings was that it wasn't public or semi-public access as would be for an apartment complex or hotel or health club. I guess by the letter of the code I may have been wrong.

[This message has been edited by Jps1006 (edited 07-05-2006).]

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#67438 - 07/05/06 04:35 PM Re: Hot tub tragedy averted  
Dnkldorf  Offline
Joined: Dec 2004
Posts: 1,064
nowhere usa
Around where I am at, some townships require 2 drains far enough apart, so that one can't get stuck at the bottom. Designing the tubs and pools so this doesn't happen should be the first priority...

#67439 - 07/05/06 06:42 PM Re: Hot tub tragedy averted  
LK  Offline
Joined: Jan 2003
Posts: 1,429
New Jersey
If the town issued a permit, for the spa at a townhouse, and it was approved, then it's ok.

#67440 - 07/05/06 07:42 PM Re: Hot tub tragedy averted  
resqcapt19  Offline
Joined: Nov 2000
Posts: 2,148
Makes one think the last sentence should be deleted.

Sounds like a good idea. When the original emergency stop rule was put into the code, the information provided with the substantiation said that dwelling unit pumps do not have enough suction to cause this problem. The code change was a result of this type of accident in commerical installations.


#67441 - 07/05/06 07:53 PM Re: Hot tub tragedy averted  
HotLine1  Offline

Joined: Apr 2002
Posts: 6,872
Brick, NJ USA
As to your townhome question. Here in NJ a 'townhouse' is a single family dwelling, as in a structure with 8 townhouse units is 8-single family houses. Work within each unit requires a seperate permit. The hot tub in this instance is in/at a single family home.

NJ also has a requirement for Emergency Off on public pools.

An alternative for the hot tub is a 'Stengel Switch" which shuts down the pump(s) with an increase in suction. Another option was/is a raised diverter on the return line.



#67442 - 07/05/06 09:16 PM Re: Hot tub tragedy averted  
e57  Offline
Joined: May 2003
Posts: 2,876
Hmmm. I always thought the emergency shut off was for electricution hazard, due to its distance from the tub. Couldn't the same happen in a regular pool?

[This message has been edited by e57 (edited 07-05-2006).]

Mark Heller
"Well - I oughta....." -Jackie Gleason

#67443 - 07/05/06 10:27 PM Re: Hot tub tragedy averted  
gfretwell  Offline

Joined: Jul 2004
Posts: 9,126
I can't believe this hot tub was approved without an anti-entrapment system. It was code in Md in 1980 when I built my first hot tub and Florida also has the rule. It gets inspected twice here, once during the plumbing rough and once for the final.

Greg Fretwell

#67444 - 07/06/06 12:35 AM Re: Hot tub tragedy averted  
skingusmc  Offline
Joined: May 2004
Posts: 116
Simi Valley, CA USA
The spa we have has four (4) drains (returns), each approximately 5-6 inches diameter. There are two on the bottom of the spa and two on the side, each being about 2 feet apart.

The pool and spa was built in 1983. This is in Ventura County, CA.

I wonder how "old" this spa in the video is?



#67445 - 07/06/06 01:38 AM Re: Hot tub tragedy averted  
gfretwell  Offline

Joined: Jul 2004
Posts: 9,126
The anti-entrapment in my pool includes a vent to air. If the suction side gets blocked it will suck air until the pump cavitates.

Greg Fretwell

#67446 - 07/06/06 10:19 AM Re: Hot tub tragedy averted  
renosteinke  Offline
Cat Servant
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
Shut-offs I've seen that were next to tubs have usually been air-operated, with the electrical parts off somewhere else.

I believe the code limits the requirement to non-residential tubs for two reasons:
- Residential ones usually have controls at tub side, while the ones at the "Y" generally have ALL controls locked up in a different room; and
- Large pools get larger pumps, and thus might pose a greater risk.

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