Thanks for the confirmation guys I have been arguing this for 2 days with my boss but due to him hiring a electric contractor and we have a journeyman on staff and they both say 310 is for heat only and since # 10 is really good for 40 amps they can still run all that wire and put the 22 amp load on it,what is sad in this whole situation is that 2 young guys are torn between believing me or the 2 guys with the liscense .As for the T-stat wires it would not surprise me if they do run them in it.I never try to argue the code but sometimes you have to so I will go at my boss again tomorrow and show him this,sure glad he is a good guy
