With all the emphasis on safety nowadays, can someone tell me how they allow control panels to be installed inside starters or VFDs? I've attached a picture of a Sq D VFD I mounted a couple days ago on a cooling tower.
The drive has all kinds of stickers on the outside telling you to shut off all power before opening the door, But how is one to operate the control without the power on??
Sq D isn't the only one, couple weeks ago I had a large Carrier air handler with the VFD control mounted right next to the incoming power(480v) terminations.
Same deal, turn off all power but how do you operate control?
How do they get a UL listing?
The drive has all kinds of stickers on the outside telling you to shut off all power before opening the door, But how is one to operate the control without the power on??
Sq D isn't the only one, couple weeks ago I had a large Carrier air handler with the VFD control mounted right next to the incoming power(480v) terminations.
Same deal, turn off all power but how do you operate control?
How do they get a UL listing?