Reno- A motor overload is a device in the circuit that is sensitive to current flow. To be sensitive to the current of the individual motors they would have to be in the feed to each motor. If you are talking about combining the two motors and installing one overload sized to match the total load of both motors- well I guess that would be okay but only if both motors were running at the same time. That would be a design issue. I do think that each motor should have it's own independent motor overload based on 430.32 if these are field wired motors. If an engineer has designed this "machine" to use only one overload then that's another story.
Reno- Hope I've not insulted your knowledge in any way because I get the impression you have a good education and I respect your comments on all of your post.
Having say two overloads in series makes no sense to me. As to your question about whether they are switches or loads, I'd say neither and possibly identify them as "fuseable links" of a sort.
I'm sticking with my previous post about using interlocking relays.
Last edited by George Little; 04/12/09 02:58 PM.
