Hydro pump bonded to water feed???

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What I'm saying is that unless a metal piping system is used to circulate the water it is not required to be bonded. The metal piping supplying the faucet to a hydromassage tub does not require bonding since it is not part of the circulation system.
 
I know the handbook is not the code but, here goes.

"The bonding requirement for hydromassage bathtubs requires interconnection between metal piping systems and metal parts associated with the water recirculating system only at the hydromassage bathtub location.

As is the case with swimming pool bonding, this section does not require the installation of a bonding conductor from the hydromassage bathtub motor to the service equipment or panelboard from the hydromassage bathtub branch circuit originates even if there is no metal piping or metal parts in the vicinity of the hydromassage bathtub.

The bonding required by 680.74 is intended to create a local equipotential plane, and the equipment grounding conductor of the branch circuit supplying the hydromassage bathtub provides the path for ground fault current.

Trevor I'm not sure your concern about other piping would be in the scope of the article.
 
M. D. said:
I know the handbook is not the code but, here goes.

"The bonding requirement for hydromassage bathtubs requires interconnection between metal piping systems and metal parts associated with the water recirculating system only at the hydromassage bathtub location.



Trevor I'm not sure your concern about other piping would be in the scope of the article.
Click to expand...


You've answered the question. Read the bold print from your post.
 
I guess what I want to say is this ,

I don't think Trevor and I will agree , that's fine , in fact it is good because it has made me think about why I would want the metal faucet connected to a metal piping system to be connected (bonded) to grounded metal parts in contact with the circulating water . It is because if they are not bonded together there is a chance for a potential difference.
The water in the tub conducts electrcity so in effect I'm connected electrically to the grounded metal part in contact with the water while I take my hydromassage bath . I can also touch the faucet . I want them both at the same potential ,....without question I want them both electrcally the same.
 
MD, we can agree to disagree. I'm no English professor but simply because the word and is between two phrases does not mean that they separate entities in a sentence. The sentence:

680.74 Bonding.
All metal piping systems and all grounded metal parts in contact with the circulating water shall be bonded together using a copper bonding jumper, insulated, covered, or bare, not smaller than 8 AWG solid.
Click to expand...

It says that the metal piping systems and the grounded metal parts require bonding. It does not mean that the words metal piping systems are separate from the all grounded metal parts simply because the word and is between them. If you rewrote the sentence:

All grounded metal parts and all metal piping systems in contact with the circulating water...

It would seem much clearer that the metal piping system must be in contact with the circulating water. The two sentences are identical in meaning.

Following your logic that all metal piping systems must be bonded, then if the faucet piping is all plastic but the piping system in the basement is metal than you're argument says that you must bond to the piping system in the basement. As you said "all metal piping systems". But so where are all of these systems? In the bathroom? It doesn't say that in 680.74, in the basement? Doesn't say that either. How about in the garage? Nope, not in 680.74. Can you see where I'm going with this? There is no substantiation for your claim that the metal piping for the faucet, which is separate from the circulation system to be bonded to anything at the tub.
 
Trevor I see your point and it does make sense to me .

It also makes sense to have the metal things with touch potential ,and I do consider the metal parts in contact with the circulating water in contact with me when I'm sitting in the tub, to have equipotential .

I also answered the original question as

(B) metal piping onthe tub that is in contact with the circulating water

and was wrong.

I know the folks who made up the questions could be wrong and all the folks who reviewed and approved the material, who are much like us , they like to read and pick apart this stuff too, in all 14 states could also have missed this "mistake" , but I'll be bonding the metal parts and metallic supply piping because they have touch potential .


Which of the following components of a hydromassage tub are required to be bonded together by a #8 AWG copper conductor?
A: Internal non-current carrying metal components of a listed double-insulated hydromassage pump
B: Metal piping on the tub that is in contact with circulating water
C: Metal piping that supplies water to the tub
D: Both b & c are correct



Metal piping systems that supply Hydromassage bathtubs must be grounded


Article 680.74 in the 2002 NEC? was changed by deleting wording that required listed double-insulated pumps to provide a ?means for grounding internal, non-accessible, non-current carrying metal parts.? This change was supported by comments that pointed out that the 2002 NEC? language was appropriate for swimming pool pumps which are not-double insulated. Requiring bonding of internal parts of listed double-insulated hydromassage pumps would violate their listing.
The change was unanimously approved because the panel believed that an increased level of safety was provided for these installations when listed double-insulated hydromassage pumps were connected to a power source by means of a three wire cord that included an equipment grounding conductor.

Choice B is incorrect

(d) is correct. The change in article 680.74 omitted the requirement for bonding internal components of listed double-insulated hydromassage pumps because this would violate the listing of the pump.
 
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