Actual load vs service size

[mbrooke]

Question- how are they getting 600amps? Total load is 100kw. Similar load and square footage for a right aid is calling for 1,200amps. :huh:

 

[mbrooke]

....

 

[shortcircuit1]

Question- how are they getting 600amps? Total load is 100kw. Similar load and square footage for a right aid is calling for 1,200amps. :huh:

There are a lot of spares in there. My guess is they accounted for future load growth.

 

[mbrooke]

There are a lot of spares in there. My guess is they accounted for future load growth.

Could be.


Under the NEC, what would my service size be though? 400amps?

 

[shortcircuit1]

Could be.


Under the NEC, what would my service size be though? 400amps?

Based on the riser they already provided a 600A disconnect with 2 sets of 500kcmil. Your service size is 600A. Unless and until there is a need for some future loads your service size will be 102kW@208/120v,3phase=282A.So 300-400A service.

 

[mbrooke]

Based on the riser they already provided a 600A disconnect with 2 sets of 500kcmil. Your service size is 600A. Unless and until there is a need for some future loads your service size will be 102kW@208/120v,3phase=282A.So 300-400A service.

300-400A is what I was thinking.


In theory a 250 would work- though that would violate code.

 

[shortcircuit1]

300-400A is what I was thinking.


In theory a 250 would work- though that would violate code.

Not sure if they took the diversity factor for receptacles in RP panel. How would a 250A work? Are you thinking about some diversity that all of the RTU's may not work at the same time?

 

[mbrooke]

Not sure if they took the diversity factor for receptacles in RP panel. How would a 250A work? Are you thinking about some diversity that all of the RTU's may not work at the same time?

Yes