disconnecting means

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as per Article 250
There is only one GEC but there may be more than one GE.
Also
The GEC must terminate where the Bonding jumper does.
Please guide me as I could have been misinformed.
 
wbalsam1 said:
Not permitted to by serving utility. Poco will not allow service grounding connection at CT enclosures, meter enclosures, and other locations that are "sealed" since they are considered "not accessible". :)
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Power Companies around here (upstate northeastern New York) such as New York State Electric & Gas and National Grid will not permit the grounding electrode conductor within their metering enclosures and elect instead to have the GEC originate in the service disconnecting means.

There is a metering enclosure with a main circuit breaker contained within that they will now allow, but this has the metering compartment able to be "sealed" while the CB section is "accessible". This accessible CB area is typically where the grounded conductor is connected to the grounding electrode system.

But NYSEG allows a metering disconnect (must be company "sealed") ahead of their meter, for network metering of 400 amps and below for 208/120 and 480/277. Preconsultation required. The GEC system is downstream of this disconnect at the service disconnect.
 
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Sierrasparky said:
as per Article 250
There is only one GEC but there may be more than one GE.
Also
The GEC must terminate where the Bonding jumper does.
Please guide me as I could have been misinformed.
Click to expand...

Around here for residential it is all PVC or cable. No need for bonding jumpers.
 
Sierrasparky said:
Nice diagram , But I don't see the case for the first disco not to have the GEC.
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Mike Holt's graphic is simply a visual of 250.24(A)(1). The GEC or electrode doesn't tell the service disconnect where to go but the service entrance/lateral including its disconnect do tell the grounding where to go.
Notice 250.24 "The connection shall be made at any accessible point from the load end of the service drop or service lateral to and including the...bus to which the service conductor is connected at the service disconnecting means."

Sierrasparky said:
I don't see the issue to have a disconnect outside with the meter (meter w/main) and all the branch breakers in the Dry full height basement or garage. This allows for service during bad weather or cold nights. I the old day's they POCO allowed the meter outside with no Disco. Now they frown on it. Am I missing something?
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This is still acceptable it is your preference as long as you're in compliance with 230 VI. The service entrance only has overload protection and does not account for ground-fault or short-circuit protection so these conductors must be disconnect-able at or nearest their point of connection to or in a building, a meter is not a disconnect.

Nowadays there's a "real estate" problem for sub panels so often MMLC are used, but if you have room inside and you want to use a meter main only for the service disconnect it is code compliant, the grounding cannot take place at the sub panel though the neutral cannot bond past the service disconnect.
 
Sierrasparky said:
The meter cans and service are also PVC?
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No, but the meter can is bonding since the neutral is attached to the can itself. What would you jump? The service disco is bonded with a screw from the neutral bar to the can.

So give me an article that says I cannot do what I am doing.
 
wbalsam1 said:
Power Companies around here (upstate northeastern New York) such as New York State Electric & Gas and National Grid will not permit the grounding electrode conductor within their metering enclosures and elect instead to have the GEC originate in the service disconnecting means...
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This is tbe same here in California with PG&E
 
Sierrasparky said:
as per Article 250
There is only one GEC but there may be more than one GE.
Also
The GEC must terminate where the Bonding jumper does.
Please guide me as I could have been misinformed.
Click to expand...

The electrodes must all connect and one GEC terminates as per 250.24(A)(1), and I think the bonding jumper you're talking about is often a factory installed green screw from bus to enclosure in residential service equipment so you don't physically add a conductor.
 
tryinghard said:
The electrodes must all connect and one GEC terminates as per 250.24(A)(1), and I think the bonding jumper you're talking about is often a factory installed green screw from bus to enclosure in residential service equipment so you don't physically add a conductor.
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yes that is the way I have always done it. I was just stating from memory that the GEC must attach at the similar point in which the nuetral is bonded. ( same can) Contrary to what petersonra was asking and what Alwan is doing.

There is to be one GEC but you can have many GE' connected to it.
 
petersonra said:
is one permitted to have an outside disconnecting means in the service conductors prior to the place where a service conductor is grounded?
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This could happen if the entire service was a High-impedance grounded system.
 
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