Rod, not sure i would run at 350 without checking with Steve. Having said that, and please someone correct me if I'm wrong here, but previously (2015) you mentioned thinking of an oven thermostat but they were 250v. Am I correct in my thinking that if you used a 250v on 120v you will be ok, you just can't use a 120v on a 250. I know we've got some on here with electrical experience on knowledge, but I believe you would be ok on that as it's just a heavier switch. Anyways, hope this might help you out and Merry Christmas to you and everyone else.