Equipotential Bonding

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bcorps

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Location
Evansville, IN
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Engineer
Anyone ever have an AHJ require equipotential bonding in a greenhouse? I have my doubts, but it is a big slab of concrete with electric fans, pumps, etc. Consider it an extremely shallow pool.
 
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petersonra

Senior Member
Location
Northern illinois
Occupation
engineer
680.1 Scope. The provisions of this article apply to the
construction and installation of electrical wiring for, and equipment
in or adjacent to, all swimming, wading, therapeutic, and
decorative pools; fountains; hot tubs; spas; and hydromassage
bathtubs, whether permanently installed or storable, and to
metallic auxiliary equipment, such as pumps, filters, and similar
equipment. The term body of water used throughout Part I
applies to all bodies of water covered in this scope unless otherwise
amended.
Click to expand...

It does not seem to me that even if the greenhouse floor has an inch of water on it that it meets the scope as defined in 680.1.

This would be like claiming a driveway requires bonding because it sometimes gets wet and there is a receptacle nearby.

It might be a "good" idea, but I don't think it is a code requirement.
 
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rc/retired

Senior Member
Location
Bellvue, Colorado
Occupation
Master Electrician/Inspector retired
bcorps said:
Anyone ever have an AHJ require equipotential bonding in a greenhouse? I have my doubts, but it is a big slab of concrete with electric fans, pumps, etc. Consider it an extremely shallow pool.
Click to expand...
Equipotential bonding not required in a greenhouse by the NEC.
 
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rc/retired

Senior Member
Location
Bellvue, Colorado
Occupation
Master Electrician/Inspector retired
petersonra said:
what if the greenhouse is growing water lilies and there is 16 inches of water all the time?

what if there are goldfish?

just curious how close it has to get to being a pool before it needs bonding.
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My nephew lives in a slab on grade house. What if his washing machine blew a hose and flooded the house?
What if a frog had wings???
 
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Dell3c

Guest
bcorps said:
Anyone ever have an AHJ require equipotential bonding in a greenhouse? I have my doubts, but it is a big slab of concrete with electric fans, pumps, etc. Consider it an extremely shallow pool.
Click to expand...
Gentlemen.. Believe this falls under Article 682 (Natural and Artificial Made Bodies of Water). (not article 680.)

682.2 Definitions
See Artificially Made Bodies of Water.

682.33 Equipotential Planes and bonding of Equipotential planes.

(A) Areas Requiring Equipotential Planes.
 
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rc/retired

Senior Member
Location
Bellvue, Colorado
Occupation
Master Electrician/Inspector retired
Dell3c said:
Gentlemen.. Believe this falls under Article 682 (Natural and Artificial Made Bodies of Water). (not article 680.)

682.2 Definitions
See Artificially Made Bodies of Water.

682.33 Equipotential Panes and bonding of Equipotential planes.

(A) Areas Requiring Equipotential Planes.
Click to expand...
How is a concrete slab in a greenhouse an artificially made body of water?
 
Fred B

Fred B

Senior Member
Location
Upstate, NY
Occupation
Electrician
I dont see this affecting the plant life. EP bond is beneficial were livestock are kept. NEV is known to impact milk production. Is AHJ asking for EP bond or bonding of metal green house framing?
 
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petersonra

Senior Member
Location
Northern illinois
Occupation
engineer
If it is continuously wet, it has the same safety hazards as a swimming pool that the equipotential bonding of a pool supposedly makes safe. I just don't see that the code addresses it for a greenhouse, even though the same hazards exist.
 
D

Dell3c

Guest
rc/retired said:
How is a concrete slab in a greenhouse an artificially made body of water?
Click to expand...
I all due respect to rc/ retired, read last sentence in the original post. #1.. That given in explanation, you know as much as I do..
 
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