I moved into a 50 year old home about 2 years ago and we’ve been using a (miraculously working) water heater from 1994. Yesterday, its life finally came to an end when I found it had sprung a leak in our laundry room. Since it’s a rental, we had a technician come to assess it and he’s going to bring us a new one later today. Since the house is pretty old, however, I checked our circuit today and found something (maybe?) troubling.
We’re still using the old fuse boxes from the sixties and while our current water heater has its own 30amp circuit, the wire that runs to the unit is 12 gauge, which I’ve read is a no no. Our current heater is 40 gallons and 3000 watts with a max amp of 18.75, so it’s probably never maxed out the load, but I’m concerned that a new one might.
When I mentioned it to the technician, he waved off my concern and said the new units run at a lower max amp than this and 12 gauge would be totally fine. He’s obviously more experienced than I am so I have no choice but to defer to the professional but I just figured I’d check here to ease my mind a little.
Is the tech right or am I putting myself at risk by having a new unit put in?
Thanks in advance for any help or advice!