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[Dennis Alwon]

Pierre,

isn't this a violation of 250.92 ? the only means for bonding the meter base is the use of a locknut on concentric ko's (assuming the can next to it is bonded). there is no provision for bonding this meter can, but it is required.

These are feeders not service conductors. The main is before the meter as I understand it.

(This meterpan and panel are installed on the loadside of the service disconnecting means)

 

[iwire]

Isn't this a violation of 250.92 ? the only means for bonding the meter base is the use of a locknut on concentric ko's (assuming the can next to it is bonded). there is no provision for bonding this meter can, but it is required.

The meter can is bonded as required by 250.92(A)(2), it is bonded by the grounded conductor as allowed by 250.92(B)(1).

However the offset nipple on the left is required by 250.92(A)(1) to be bonded we can not tell if there is a bonding bushing on the far side of the offset nipple.

 

[iwire]

These are feeders not service conductors. The main is before the meter as I understand it.

I did not pick up on that, Thanks.

 

[nakulak]

its a meter, its owned by the poco, how can it not be a "service enclosure, meter fitting, box, . . ." ? (250.92 A 2 2005)

 

[Dennis Alwon]

its a meter, its owned by the poco, how can it not be a "service enclosure, meter fitting, box, . . ." ? (250.92 A 2 2005)

The way I read that it means service conductors must be in the meter for it to be required by art 250.92(A)(2).

 

[nakulak]

The meter can is bonded as required by 250.92(A)(2), it is bonded by the grounded conductor as allowed by 250.92(B)(1).

However the offset nipple on the left is required by 250.92(A)(1) to be bonded we can not tell if there is a bonding bushing on the far side of the offset nipple.

but the end of 250.92 says it can't be bonded using a locknut on a concentric ko (2005)

 

[iwire]

its a meter, its owned by the poco, how can it not be a "service enclosure, meter fitting, box, . . ." ? (250.92 A 2 2005)

If it is located on the load side of the service disconnect it is not 'service' equipment to the NEC.

Service equipment, conductors, rules all end at the service disconnecting means, after that it is all feeders and branch circuits.

The requirements for bonding on the load side of the service disconnect relax as now we are dealing with overcurrent protected conductors.

 

[iwire]

but the end of 250.92 says it can't be bonded using a locknut on a concentric ko (2005)

Right. :smile:

If these where service conductors 250.92 requires the raceway to be bonded, that can be done at one end only.

If they used a bonding bushing at the far end nothing more is needed.

 

[Pierre C Belarge]

It is a common misconception by some that when they see a meter enclosure they automatically think SERVICE.

Go into many multifamily buildings and you will see many meters and apartment disconnects located on the load side of the meters. They are generally supplied by a feeder that is supplied on the load side of a service disconnect. All of those meters and apartment disconnects are part of the feeder, not service conductors.

 

[RUWired]

I don't see how this can be approved. The neutral is isolated in the enclosure and the ground wire passes straight through and there is pvc pipe on the load side. Is there pvc on the line side as well?
Rick

 

[wbalsam1]

I don't see how this can be approved. The neutral is isolated in the enclosure and the ground wire passes straight through and there is pvc pipe on the load side. Is there pvc on the line side as well?
Rick

IMO, it's lousy work at the very best. I agree that the neutral actually floats in this metering enclosure which it should do since they're feeders, but if a ground fault occurs in this enclosure, it has to make a connection through the concentric rings to get to the metal offset nipple to eventually clear the fault. Even though this is code-compliant for feeders, it is minimal to the max. :smile: