Bonding

[Rick Quarles]

How important is bonding a hydromassage motor back to the bus in the panel if the plumbing is all plastic??

 

[raider1]

How important is bonding a hydromassage motor back to the bus in the panel if the plumbing is all plastic??

Are you talking about the bonding requirements of 680.74? If you are this section never requires that the bonding be brought back to the equipment grounding bar at the panel. All this section requires is that you bond together all metal piping systems and all grounded metal parts in contact with the circulating water. If you don't have a metal piping system then what are you bonding together?

The hydromassage motor will be bonded and grounded to the EGC that is provided by the circuit feeding the tub.

Chris

 

[George Stolz]

I agree wholeheartedly with Chris.

 

[mark henderson]

Raider would you mind explaining that to some of these inspectors in Texas...
I have argued that more then once.....
But AHJ. sometimes it is just easier to do it. I guess it depends on my mood.:grin:

Mark

 

[raider1]

Raider would you mind explaining that to some of these inspectors in Texas...

Sure, you buy the plane tickets and I will be glad to come and explaine it to them.

All kidding aside, I would politely ask the inspector to show me in section 680.74 where it requires that the bonding jumper be run back to the equipment grounding bar at the panel.

Chris

 

[infinity]

This seems top be a common misconception. I have seen guys bonding the motor to the hot and cold water pipes feeding the faucet. This isn't required either.

 

[M. D.]

This seems top be a common misconception. I have seen guys bonding the motor to the hot and cold water pipes feeding the faucet. This isn't required either.

In this area it had been what the inspector wanted to see, perhaps still does, I have bonded many to the copper water pipe myself. My Question is , is there a downside (or any danger) to bonding the motor to the water pipe?

 

[infinity]

In this area it had been what the inspector wanted to see, perhaps still does, I have bonded many to the copper water pipe myself. My Question is , is there a downside (or any danger) to bonding the motor to the water pipe?

A downside no, but it is not an NEC requirement. If your jurisdiction follows the NEC the inspector is incorrect for requiring bonding the water pipes.

 

[George Stolz]

Question is , is there a downside (or any danger) to bonding the motor to the water pipe?

I can think of a few...

 

[George Stolz]

I just peeked, and the language for the 2008 might just get people up to speed on it's own:

2008 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. The bonding jumper shall be connected to the terminal on the circulating pump motor that is intended for this purpose. The bonding jumper shall not be required to be connected to a double insulated circulating pump motor. The 8 AWG or larger solid copper bonding jumper shall be required for equipotential bonding in the area of the hydromasage bathtub and shall not be required to be extended or attached to any remote panelboard, service equipment, or any electrode.

 

[electricmanscott]

Geoerge they more or less added the FPN into the text.

Rick the motor is bonded to the service through the equipment grounding conductor.