Wire sizing

[AndrewGia93]

Running a new service to a pole barn about 500 feet from a ct cabinet. 200 amp 208 3 phase and the load calc for the building is a max of about 140 amps. Not really getting too much help from engineers or township to for my calculations on wire sizing. Trying to run aluminum wire. Thoughts?

 

[infinity]

You can try a VD calculator. Here's one from Southwire:

Voltage Drop Calculator | Southwire

www.southwire.com

Welcome to the Forum.

 

[AndrewGia93]

You can try a VD calculator. Here's one from Southwire:

Voltage Drop Calculator | Southwire

www.southwire.com

Welcome to the Forum.

Appreciate it! In this situation would you calculating according to the full 200 amps or estimated load

 

[augie47]

Appreciate it! In this situation would you calculating according to the full 200 amps or estimated load

Your choice. Depends on how much you want to allow for future loads.
Once you run the numbers whoever is paying will likely lean toward estimated or calculated load and not the full 200.

 

[infinity]

Appreciate it! In this situation would you calculating according to the full 200 amps or estimated load

What Augie said.