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#209313 - 03/23/13 09:17 AM Large service grounding
twh Offline
Member

Registered: 03/11/04
Posts: 892
Loc: Regina, Sask.
A few years ago, we ran large ground wires from a service to the rods and water lines. Then, the large ground wires were only run to the water lines. Now, everything is a #6. I know where a thousand dollars worth of copper can be reclaimed and replaced with a couple hundred dollars worth.

It's hard to have respect for the rules when it is so clear that they are just a whim.

How long until we get rid of arc fault breakers?

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#209324 - 03/23/13 07:10 PM Re: Large service grounding [Re: twh]
shortcircuit Offline
Member

Registered: 06/27/04
Posts: 608
Loc: massachusetts
Originally Posted By: twh
Now, everything is a #6.


What do you mean everything is #6?

GEC sizing hasn't changed.

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#209325 - 03/23/13 07:46 PM Re: Large service grounding [Re: shortcircuit]
twh Offline
Member

Registered: 03/11/04
Posts: 892
Loc: Regina, Sask.
Originally Posted By: shortcircuit
Originally Posted By: twh
Now, everything is a #6.


What do you mean everything is #6?

GEC sizing hasn't changed.
Ha, Ha! you're in the Canadian area.

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#209328 - 03/23/13 09:57 PM Re: Large service grounding [Re: twh]
shortcircuit Offline
Member

Registered: 06/27/04
Posts: 608
Loc: massachusetts
Originally Posted By: twh
Originally Posted By: shortcircuit
Originally Posted By: twh
Now, everything is a #6.


What do you mean everything is #6?

GEC sizing hasn't changed.
Ha, Ha! you're in the Canadian area.


Oh la connerie, je l'ai manqué vous étiez au Canada! Vous utilisez seulement *6 du conducteur d'électrode de bases en haut là ?

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#209349 - 03/24/13 11:03 AM Re: Large service grounding [Re: twh]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6785
Loc: Brick, NJ USA
I had a comment on this until I noticed it was a Canadian issue.
_________________________
John

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#209363 - 03/24/13 01:12 PM Re: Large service grounding [Re: shortcircuit]
twh Offline
Member

Registered: 03/11/04
Posts: 892
Loc: Regina, Sask.
Originally Posted By: shortcircuit
Oh la connerie, je l'ai manqué vous étiez au Canada! Vous utilisez seulement *6 du conducteur d'électrode de bases en haut là ?

Se trata de una nueva norma, si he entendido correctamente la regla. Creo que es verdad.

To save everyone the trouble, shortcircuit asked if this is really the rule and I responded that I believe it is.

The note to the rule in our book is that the majority of the fault current will be taken by the neutral back to the source.

I'm equally fluent in French and Spanish - not at all. Thanks, Google translate.

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#209369 - 03/24/13 02:33 PM Re: Large service grounding [Re: twh]
shortcircuit Offline
Member

Registered: 06/27/04
Posts: 608
Loc: massachusetts
Can you provide a link to the current rule? In english:)

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#209370 - 03/24/13 02:51 PM Re: Large service grounding [Re: twh]
twh Offline
Member

Registered: 03/11/04
Posts: 892
Loc: Regina, Sask.
10-812 The size of the grounding conductor connected to a grounding electrode conforming to Rule 10-700 shall be not smaller than No. 6 AWG.

Appendix B: It is intended that the size of a grounding conductor for a solidly grounded alternating-current system connected to a grounding electrode need not be larger than No. 6 AWG. The majority of fault current will be taken by the service grounded conductor of the system back to the source, and a grounding conductor sized not less than No. 6 AWG would be sufficient to carry any portion of the fault current that will flow through it.

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