Upside down furnace switch

Inspected a home with a forced air heat/cool unit which had a service shut off switch installed “upside down” - ON in down position, Off in up position. The toggle switch itself had labeling which said ON and OFF respectively and was accurate. I found it confusing and called it out as a defect, as I wasn’t sure whether power to the units was on or off. Wondering what others think about this.

The NEC seems to agree with your assessment that it’s a problem:

Thanks Robert. I knew I could count on you to provide the back up!:slight_smile: