How to Spec meter for 4000aA total load

[infinity]

Most applications that need this much power are better served at 480V. Also, don't carry a neutral. Don't use 277 lighting and just drop 208/120 transformers where you need them.

Wouldn't a Wye service require that the neutral be brought to the service disconnect?

 

[zbang]

Sure, but it can stop there.

I don't see a problem with installing 480/277 panels if that's appropriate, but we're back to the actual use, size, and cost factors.

 

[don_resqcapt19]

I have always wondered why stand alone CT cabinets seem to be the only equipment that has lashing requirements. Anyone seen it on panelboards or switchboards?

Most of the panel and switchboard lashing requirements only apply where the available fault current exceeds 65k or 100k. I have seen it a couple of times, but it is rare.

 

[tom baker]

Most of the panel and switchboard lashing requirements only apply where the available fault current exceeds 65k or 100k. I have seen it a couple of times, but it is rare.

It may be a UL listing requirement for CT cans for lashing. The Circle AW Cans I have installed have a label on the door showing the requirements, so I revert to a Boy Scout and lash

 

[Knightryder12]

I have a 4000A total load. How do I spec CT can meter for this? Project is in Palm beach FL. I have no clue because I have never done this before

The ones I have done in the past, the CT's are on the bayonets in the POCO's transformer. You provide an 1-1/4 or 1-1/2" conduit from the transformer to the CT style meter base. I believe that FP&L requires that to be no farther then 20' away from the transformer.

 

[infinity]

I've seen lashing requirements on bus duct transition boxes but never on a 200 KAIC, 4000 amp service from ConEd.