Calculating Feeder Load from C/T

[Electricalhelp]

I am unable to tell what the wire size is coming from the top, does anyone have any guesses what the incoming service size would be?
How can I get an approximation on the the load from the wire size if the building has abandoned for a few years.
Utility company still has not reach back to me yet.
The wire size size on the bottom is 300 kcmil AL

 

[ptonsparky]

You can give a guess, but it won’t means thing. The real question is what the new load Will be.

looks like it’s due for an update.

 

[LarryFine]

I would be very surprised if all of those terminations carried current equally.

 

[charlie b]

Is there a service disconnecting means upstream of this enclosure, or perhaps six of them grouped together immediately downstream?

Now, fully admitting my lack of hands-on experience with this, to me it seems strange that six 300's would fit side-by-side at the bottom of that plate. Did I misunderstanding something in your description?

 

[Electricalhelp]

Is there a service disconnecting means upstream of this enclosure, or perhaps six of them grouped together immediately downstream?

Now, fully admitting my lack of hands-on experience with this, to me it seems strange that six 300's would fit side-by-side at the bottom of that plate. Did I misunderstanding something in your description?

There was no service disconnect or six disconnect downstream. I counted about 10 Panels, some had MCB and others were MLO.

I barely have any hand on experience myself, hence why I was looking for some assistances too.

 

[electrofelon]

Is there a service disconnecting means upstream of this enclosure, or perhaps six of them grouped together immediately downstream?

Now, fully admitting my lack of hands-on experience with this, to me it seems strange that six 300's would fit side-by-side at the bottom of that plate. Did I misunderstanding something in your description?

There are indeed 6 300s on the bottom, if you zoom in you can see the labeling on some of the conductors. That is a big box, probably 3x3 or 4x4. It is kind of hard to tell what is going on there. Almost looks like a "end box" where the power companies conductors attach to the customer's conductors, and the Poco is using more realistically sized conductors like 500 or 750s - however all the conductors go into the same trough which makes me think that is not what is going on. Would help to know where the metering is and a picture of what is to the left.

 

[ptonsparky]

Six sets of three conductors equate to six disconnects.

What is the ampacity 750s?
500s?
Close enough.

They still need to start over.

 

[Electricalhelp]

There are indeed 6 300s on the bottom, if you zoom in you can see the labeling on some of the conductors. That is a big box, probably 3x3 or 4x4. It is kind of hard to tell what is going on there. Almost looks like a "end box" where the power companies conductors attach to the customer's conductors, and the Poco is using more realistically sized conductors like 500 or 750s - however all the conductors go into the same trough which makes me think that is not what is going on. Would help to know where the metering is and a picture of what is to the left.

If you look at my other post about the six disconnect rule, you can find more pics.

But there are (3) 225 AMP Panels, (1) 400 AMP, (1) 200 AMP, (1) 150 AMP, (1) 100 AMP, (3) 30 AMP,

 

[Electricalhelp]

If you look at my other post about the six disconnect rule, you can find more pics.

But there are (3) 225 AMP Panels, (1) 400 AMP, (1) 200 AMP, (1) 150 AMP, (1) 100 AMP, (3) 30 AMP,

 

[electrofelon]

Are you sure that's not a main in the left hand side of the middle wall? Picture 7576.

 

[Electricalhelp]

Are you sure that's not a main in the left hand side of the middle wall? Picture 7576.

That's what I thought too...But that breaker is only 400 AMP/3Ph.
It only calls out 2 of the other breakers in the electrical room.
There are 5 additional tenants in the building too

 

[electrofelon]

But there doesnt seem to be a meter associated with that disconnect. Guess you would have to pull some of the wireway covers off to figure out what is going on there for sure.