Pool pump
- Thread starter nickelec
- Start date
- Status
- Occupation
- Licensed Electrician
It's about 99% likely it won't. It would have to be a metal pump. Unless it's a large pool most all pool pumps are plastic
Ty Dave, I was always confused about one thing. When you provide an equipotential grid and bring back to the pump, I was always under the assumption that the egc from the system and the bonding should be separated but obviously when you hit the pump with the Bonding grid they eventually become together or am I wrong or does it not matter
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- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
You are correct. The equipotential bonding does end on the pump which has an equipment grounding conductor and they will be connected. In fact, the nec requires us to tie the equipotential bonding to the equipment grounding conductor in the case of a double insulated pump
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
A short section of metal piping in the circulation piping could easily be the water bond.
I am not a pool guy, but with hot tubs the heater is usually in a metal section of piping and gets bonded - and bonds the water as well.
Stainless piping a good idea for this for corrosion reasons.
I am not a pool guy, but with hot tubs the heater is usually in a metal section of piping and gets bonded - and bonds the water as well.
Stainless piping a good idea for this for corrosion reasons.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
There are listed products to bond the pool water...
This is one of many
This is one of many
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
Is listing required? Might still be simple to just buy such a product, but that looks pretty easy to fabricate in a pinch.There are listed products to bond the pool water...
This is one of many
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
I guess that would depend on the authority having jurisdiction. My guess is pool related it needs to be listed
texie
Senior Member
- Location
- Fort Collins, Colorado
- Occupation
- Electrician, Contractor, Inspector
pool water bond
pool water bond
If the OP has other bonded items such as a ladder, etc in direct contact with the pool water that is at least 9 square inches of surface area, that can serve as water bonding in lieu of a special fitting.
pool water bond
If the OP has other bonded items such as a ladder, etc in direct contact with the pool water that is at least 9 square inches of surface area, that can serve as water bonding in lieu of a special fitting.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
I knew that other bonded items in the water could get it done - 9 square inches is maybe the key - if fitting is under 9 square inches but still listed for bonding the water - I don't see how it can be rejected. If it is more then 9 square inches I don't see how it can be rejected whether listed or not, needs the attachment method of the bonding conductor to at least be "approved" though. How do you turn down a listed lug attached to a stud welded to the pipe or fitting?
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Yeah until the metal ladder is replaced with a nonconductive ladder. IMO, best to have the bonding at the pump area.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- Semi-retired engineer
There is no requirement in the code that future changes be accomodated.
If the pump is not running is the water in the pipe still in contact with the water in the pool? If it is on the suction side it probably is. On the downstream side maybe not.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
I think that the listed products ensure that the item is in contact with the water when the pump is off but I am not sure. I have seen some products that advertise that they are in contact with the water when the pump is off.
Btw, I know there is no code req. for future changes, that is why I said IMO....
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- Semi-retired engineer
I would tend to agree that if I had a pool I would not want the metal ladder to have a wire running from it.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
That is going to depend on placement to some degree. If located in a section of pipe that happens to drain when pump isn't running - it will never bond the water when pump isn't running no matter how many different listing criteria it may comply with.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
I don't think you have any choice, if you have a fixed metal ladder it will have a connection to the equipotential bonding system in some way. Doesn't mean that connection is normally exposed.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- Semi-retired engineer
i suppose if you could hide it well enough. otherwise I would go for plastic.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
I am not certain that the water in the pipe disappears just because the pump isn't running. Wouldn't the pressure from the pool water keep the water from pouring back into the pool?
rcarroll
Senior Member
- Location
- Fort Collins, Colorado
The pools I've wired & inspected, there is a "cup" that is poured into the concrete around the pool.
This cup has the equipotential bond wire connected to it & the ladders, diving board, etc. are held in place somehow (I haven't seen how) by the cup.
Has to be a listed assembly I assume. The equipotential bond is concealed in the concrete.
Last edited:
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
As I said, it depends on placement. If the fitting in question is above the highest level of the pool, I would expect it to drain below that fitting when pump is not running if there are no check valves to prevent this from happening.
Not around pools enough to know what is typical, and when I am usually as a user and not a service/installation person, but seems pretty logical to be that way for an in ground pool with mechanical room/area at or above grade.
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