Installed a 20-a, 240-v, single-phase, dedicated branch circuit for an automotive lift.
The lift-installation instructions required that the lift-motor supply voltage (under load)and current be measured and recorded.
In doing this, we noticed that the lift-motor control switch is only a single-pole device. Other lifts we have worked on have had 2-pole switches.
We were surprised that a nationally-known, ETL-listed lift would use a single-pole switch on a 240-v device. Our local electrical inspector was also surprised when we informed him of what we found.
I'm wondering what others are seeing in this type application. I don't recall ever seeing a 240-v device operated from a single-pole control.
