Yes that sounds correct.
But I think you need something around 10 ohms or less.

I'm going to give the pre resistor method one more shot. I am not a super electronics savvy person, so would something in the range of 2kw 1 Ohm resistor work or maybe 2kw 4 ohm?

 

You don't need that high a wattage resistor since the surge only lasts for a cycle or so.
A 10W, 5-10Ω resistor should work as long as it's connected for less than a second.

 

You don't need that high a wattage resistor since the surge only lasts for a cycle or so.
A 10W, 5-10Ω resistor should work as long as it's connected for less than a second.

Okay.. So just to confirm my setup. Put a 10W, 5-10ohm resistor in line with each leg of the 3 phase. This is on a 20amp circuit connected to the 75KvA transformer. Turn on the 20amp circuit breaker wait one second turn on the 100amp main breaker for the transformer and then turn off the 20amp breaker? Does that sound correct?

 

Powerfade;
I have done exactly what you propose and it works very well to limit the inrush current.

I set up a separate 20amp three phase circuit with a 1500watt incandescent light bulb in series on each leg (so 3 bulbs total) to act as resistors.
Turn on the 20amp circuit to limit the inrush current with the light bulbs and then switch on the 100amp circuit to fully energize the transformer and then turn off the 20amp circuit.

Both the 20amp and 100amp circuit are feeding the H1 H2 H3(wired in reverse) on the transformer
When the 100 amp circuit is turned on the light bulbs should essentially dim because the electricity will follow the path of least resistance and then I can shut down the 20amp circuit.

I actually tried this today and the fuse was still blowing. When I turned on the 20amp circuit the bulbs were very dim, but did get hot. Then I turned on the 100 amp circuit and all 3 of the bulbs got very bright. When I switched off the 20amp breaker the bulbs slowly lost their light. I think when I shut down the 20amp breaker it blew the fuse (not sure why it would do that), because the 100amp was still on and the fuse was blown.

Thanks so much