Disconnect Melting

[TwoBlocked]

...

Use an overlapping control contact at the disconnect to ensure the drive run command is off before the power is interrupted.

Yep

 

[tortuga]

After the 1st time we ran a bunch of calculations and made sure wire sizing/distance/etc was all good.

Can you share your calculations?
What is the fan motor namplate rated voltage / HP.
Branch circuit size / breaker size?
You mentioned the wire is copper what is the wire size?

You mentioned the fan is 15 feet away from the disconnect.
How long is the run to the disconnect?

You mentioned you monitored the voltage was that on each phase L-L?

 

[ptonsparky]

Can you share your calculations?
What is the fan motor namplate rated voltage / HP.
Branch circuit size / breaker size?
You mentioned the wire is copper what is the wire size?

You mentioned the fan is 15 feet away from the disconnect.
How long is the run to the disconnect?

You mentioned you monitored the voltage was that on each phase L-L?

OPs followup has been very good but, Yes, we want more!