(February 12, 2022 at 7:48 pm)Jackalope Wrote: IME, electric water heaters are hardwired on a dedicated 240v circuit. It's also my experience that homes can have some sketchy wiring.
Having more than one large 240v load (range, water heater, dryer) on one circuit is not code, and may be unsafe, I would definitely have a licensed electrician take a look at it.
I'm no electrician, but "unsafe" is an understatement; it's a future inferno just waiting to happen. My mom's house almost burned to the ground here 2 weeks ago; she's 72, and she lives with her life partner, another 72-year old man who is medically fragile and can't walk without assistance. Her main circuit breaker was fried; fortunately, they smelled it just in time.