If I have a lightbulb in my house with 230V and 40W
A guy who is into solar was telling me a water heater element designed for a 220 volt water heater could be used at 24 volts with solar pannels. He's logic was the similar/same as the original poster. I had my doubts, but he tells me it works for him.
Can't argue with a believer.
But then again over the years I've leaned the laws of Physice always seem to make an exception for some of his applications.
I had a California Certified Solar Design Engineer tell me that during the day the solar panels on my roof get charged-up during the day and then at night discharge and supply electricity to my home. The guy then was trying to sell me four PowerWall battery banks. I asked him why I needed the batteries if all of the energy is stored in the solar panels? He said you know your right. You don't need the batteries; all of the electricity is stored in the solar panels.
I just sharing my experiences. I have spoken to well over 100 State of California state licensed professionals. They had to pass some test to be a licensed professional.
But not all of them are like that, right? Just like any population or group.... a handful can be inadequate or bad. But not all are like that.