The way I figured this is as follows:

<OL TYPE=1>

[*] 3 Phase Load = 192.70 Amps (80 KVA),


[*] 1 Phase "240 Volt" Load = 141.67 Amps (34 KVA),


[*] 1 Phase "120 Volt" Load = 58.34 Amps (7 KVA).
</OL>

Nominal Totals Per Line ("Phase"):
<OL TYPE=A>

[*] Line "A": 334.37 Amps (80 KVA @ 240v 3Ø + 34 KVA @ 240v),


[*] Line "B": 192.70 Amps (80 KVA @ 240v 3Ø),


[*] Line "C": 392.71 Amps (80 KVA @ 240v 3Ø + 34 KVA @ 240v + 7 KVA @ 120v).
</OL>

Panelboard + Feeder Size

Nominal Load Values WITH LCL:

* Panelboard: 600 Amps - 240/120V 3Ø 4 Wire
* Feeder: 1,000 MCM THHN/THWN Cu. (or equivalent Parallel Feeders, protected by 500 Amp 3 Pole OCPD).


Nominal Load Values WITHOUT LCL:

* Panelboard: 400 Amps - 240/120v 3Ø 4 Wire
* Feeder: 600 MCM THHN/THWN Cu. (or equivalent Parallel Feeders, protected by 400 Amp 3 Pole OCPD).

BTW: Load on the Grounded (Neutral) Conductor would be 7 KVA (58.34 Amps)

Scott35

Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!