Article 680 versus Article 250

[benjamin8761]

Article 680 does not require the Equipotential Bonding to be tied back to remote panels, service equipment or electrodes 680.26,b.

However Article 250 requires all grounding electrode systems that are present at each building to be bonded together (250.50)

Does article 250 require the Equipotential Bonding Plane to be bonded to the grounded electrode system.

Should the Equipotential Bonding be tied to the grounding eectrode conductor

 

[Dennis Alwon]

The equipotential bonding is not an electrode

 

[LarryFine]

Won't the bonding system be tied to the EGC by at least the pump's EGC?

 

[Dennis Alwon]

Won't the bonding system be tied to the EGC by at least the pump's EGC?

Yes it would but I think he is talking about the grounding electrode conductor.

 

[benjamin8761]

250.52 (A)2 Metal In Ground Support or 250 (A)3 Concrete Encase Electrode

Would the equipotential Bonding not be considered a Grounding electrode requiring all to be tied together. The equippotentail Bonding fits the description.

If it is not a grounding electrode system - Should the Equipotential Bonding be tied back to the grounding electrode conductor

 

[LarryFine]

Would the equipotential Bonding not be considered a Grounding electrode requiring all to be tied together. The equippotentail Bonding fits the description.

Except for it only being required to be #8 cu. which may or may not qualify as an EGC.

If it is not a grounding electrode system - Should the Equipotential Bonding be tied back to the grounding electrode conductor

I would think only if there is a qualifying electrode within the pool's required perimeter.

 

[Dennis Alwon]

I see no reason why it can't be connected to the grounding electrode conductor but it doesn't have to be. All the equipotential bonding does is keep any voltage around the pool area at the same potential. There is no reason to tie it to the grounding electrode conductor.

 

[augie47]

Sidenote: Benjamin, your profile does not indicate your relationship to the electrical field as requested in the rules.
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[don_resqcapt19]

680.26(B) Bonded Parts.
The parts specified in 680.26(B)(1) through (B)(7) shall be bonded together using solid copper conductors, insulated covered, or bare, not smaller than 8 AWG or with rigid metal conduit of brass or other identified corrosion-resistant metal. Connections to bonded parts shall be made in accordance with 250.8. An 8 AWG or larger solid copper bonding conductor provided to reduce voltage gradients in the pool area shall not be required to be extended or attached to remote panelboards, service equipment, or electrodes.

 

[don_resqcapt19]

250.52(B) Not Permitted for Use as Grounding Electrodes.
The following systems and materials shall not be used as grounding electrodes:
(1) Metal underground gas piping systems
(2) Aluminum
(3) The structures and structural reinforcing steel described in 680.26(B)(1) and (B)(2)

 

[romex jockey]

didn't pools become potential GEC's recently?

~RJ~

 

[don_resqcapt19]

didn't pools become potential GEC's recently?

~RJ~

They always have been, but we just can't call them that....I guess the NFPA thinks the electrons read and follow the code.