230.82(5) Equipment Connected to the Supply Side of Service Disconnect

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bcngtr

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It has been presented that an automatic transfer switch with service disconnect is permissible to be installed ahead of a service disconnect as per 230.82(5) as this will be fed with circuits for standby power systems. In this sceanario, the grounding electrode system and specifically the main bonding jumper will remain in the existing service disconnect. The opponents of this concept present that where an automatic transfer switch with a service disconnect is installed ahead of a service disconnect that the grounding electrode system and the main bonding jumper need to be relocated to the automatic transfer switch as this is now the service disconnect.

My opinion, is that the essence of 230.82(5) is to allow the ATS with service disconnect ahead of the existing service disconnect without relocating the grounding electrode system and the main bonding jumper. If this is not the case, then what's the point of the article? Part of the article states that this must be installed in accordance with requirements for service-entrance conductors. As such, the ATS is not the service disconnect and the grounding electrode system and the main bonding jumper remain in the existing service disconnect.
 
I think the GEC is required to be relocated to the transfer switch.

In your opinion...why even seperate the grounds and neutrals at the main panel if the GEC isn't required to be relocated? Why even have a SE rated transfer switch?

Just break the SE thur a transfer switch and be done?
 
shortcircuit2 said:
I think the GEC is required to be relocated to the transfer switch.

In your opinion...why even seperate the grounds and neutrals at the main panel if the GEC isn't required to be relocated? Why even have a SE rated transfer switch?

Just break the SE thur a transfer switch and be done?
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That's the point. No separation of grounds and neutrals at the main panel. The SE rated transfer is required by 230.82(5) as it states "if provided with service equipment" . Using this article, there would be no need to relocate the neutral to ground bond to the transfer switch.
 
shortcircuit2 said:
One of the SE rated transfer switches I have installed from Kohler has provisions for branch circuits also. Would this be exempt also?
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My opinion is no as the article specifically states that it must be installed in accordance with the requirements for service-entrance conductors. Branch circuits make the switch you describe inelgible for this article.
 
Bcngtr,

I think 230.82(5) is intended to apply to applications where the tap or circuit connected ahead of the "normal" service disconnecting means is used as the source for standby power as permitted 701.12(E). Not for the "normal" or utility source for standby systems that use a generator.
 
bcngtr said:
My opinion is no as the article specifically states that it must be installed in accordance with the requirements for service-entrance conductors. Branch circuits make the switch you describe inelgible for this article.
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Well then. The Generac transfer switches create branch circuits also for power for the battery chargers. These too, would not qualify?
 
RB1 said:
Bcngtr,

I think 230.82(5) is intended to apply to applications where the tap or circuit connected ahead of the "normal" service disconnecting means is used as the source for standby power as permitted 701.12(E). Not for the "normal" or utility source for standby systems that use a generator.
Click to expand...

I agree...and the tap would then land in SE rated equipment and have its own GEC.
 
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