Disconnect Line side of meter

[GaTech04]

Im working on some tenant buildouts in an old shopping center and the power company was wanting us to put a disconnect on the line side of thier meters for servicing on any 480Y/277 services.

Is this normal for some EMCs? Ive never run into it before.... I didnt see anything in the code in regards to what is required line side of the service, just what is allowed.

I dont want to get on the PoCos bad side by openly second guessing them, but I also dont want to stick our client with thousands of dollars worth of additional gear either if it isnt necessary - but if that's what it takes for the PoCo to turn the power on ...

 

[iwire]

Pretty common, it is 'cold sequence' metering and a lot of power companies require it for voltages above 250 to ground.

 

[peter d]

Pretty common, it is 'cold sequence' metering and a lot of power companies require it for voltages above 250 to ground.

And any service fed from a network system as well.

 

[GaTech04]

Thanks guys - just searched "cold sequence" and found some good threads to poke through for follow up.

 

[Mule]

Yes our poco requires the same.....and in somecases in cramped meter packs our poco is requiring terminal box's upstream....we installed one yesterday on a 120/240 loop

 

[iwire]

And any service fed from a network system as well.

Change that to some, not any.

 

[peter d]

Change that to some, not any.

Aye aye, captain.

I know National Grid requires it at any rate.

 

[iwire]

Aye aye, captain.

I know National Grid requires it at any rate.

You know better then most that power companies are as different as can be.:smile:

 

[peter d]

You know better then most that power companies are as different as can be.:smile:

Yes, true, they are all over the map. Although I am hard pressed to believe that a poco would not require a disconnect on a service that can deliver fault current like an atomic bomb.

 

[Cavie]

Now required by Florida Power and Light on 480 Volt 2 wire single phase Street lighting. When I asked Why?, since they also require a 200 amp bypass meter at the same time I got the deer in the head light look. His answer was "don't know". Two disconects before the meter. Gotta love it.

 

[Cavie]

Im working on some tenant buildouts in an old shopping center and the power company was wanting us to put a disconnect on the line side of thier meters for servicing on any 480Y/277 services.

Is this normal for some EMCs? Ive never run into it before.... I didnt see anything in the code in regards to what is required line side of the service, just what is allowed.

I dont want to get on the PoCos bad side by openly second guessing them, but I also dont want to stick our client with thousands of dollars worth of additional gear either if it isnt necessary - but if that's what it takes for the PoCo to turn the power on ...

Don't forget about "First means of disconect" as it pertains to grounding and bonding.

 

[augie47]

'08 Code addresses them in 230.82(3)