Question for those panel builders. I'm not a UL shop, but I usually keep my designs UL friendly in case they need to be certified (happens often).
I have a project for a single 1/2 HP motor, and the customer has requested 120V Single phase only. Fair enough, they make VFDs that will take 120V single phase in for the three phase motor. (yes, it will be a three phase motor, not a single phase)
My question is - do I have to use a UL98/489 disconnect? All of the circuit breakers & fuse blocks seem to be three pole only (or 480/240 rated). I don't see anything with SCCR documentation at 120V.
Can I just use a UL 98 non-fused disconnect and supplemental protection for this panel? I assume I still need to keep the door interlock
I have a project for a single 1/2 HP motor, and the customer has requested 120V Single phase only. Fair enough, they make VFDs that will take 120V single phase in for the three phase motor. (yes, it will be a three phase motor, not a single phase)
My question is - do I have to use a UL98/489 disconnect? All of the circuit breakers & fuse blocks seem to be three pole only (or 480/240 rated). I don't see anything with SCCR documentation at 120V.
Can I just use a UL 98 non-fused disconnect and supplemental protection for this panel? I assume I still need to keep the door interlock
