NEMA F standard?

[philr]

We are submitting a bid package to a potential client and they are requesting information on whether our electrical panels, motors, and instruments conform to "NEMA F".

I have not been able to find what this "F" refers to. I have searched the NEMA website and have come up empty.

Any help with this is greatly appreciated.

 

[Wirenut]

I have heard of "Class F" insulation for wire. This a temprature classification of 155 degrees C. That is the only Class F of which I am aware.

 

[jbartos]

Suggestion: It might read NEMA Class F, which would be an insulation system (155°C temperature limit including a 40°C ambient or 115°C rise) that by experience or accepted test can be shown to have suitable thermal endurance when operating at the limiting Class F temperature specified in the temperature rise standard for the machine under consideration. See IEEE Std 100-2000 "The Authoritative Dictionary of IEEE Standard Terms," 7th-Edition.