Could someone "sanity check" my calculations / switch selection here?

[mindcrime]

Hey gang, as part of this reflow oven project I'm working on, I wanted a rocker switch on the AC mains feed, "upstream" of everything - the  heating elements, my new transformer for the low voltage rails, etc. The SSR will control the heating elements of course, but I wanted "something" I could use to "hard tun off" the entire unit (besides unplugging it from the wall outlet).

Anyway... it's a 1500W oven, and being in North America, our nominal AC mains voltage is 120V. So I took 1500, divided by 120V and got 12.5 amps. With that in mind, the switch I ordered is rated for 16A at 125VAC. This seems safe to me, but given that I'm dealing with AC mains stuff here, which I don't normally do (and haven't done much of) I thought I'd ask for somebody to sanity check my thinking here. Also, I know there is the possibility of an "inrush current" that exceeds the steady state current, but that should be brief. Right? There is also the additional power draw from the transformer I added to power the Arduino, the control signal for the SSR, and the door actuator. I just realized that the transformer datasheet doesn't explicitly list a current draw for the transformer primary, so maybe I should be more concerned about that than I am?


Anyway... what do you all say? Does a 16A switch seem good enough here, or should I allow a little more margin for error? If so, what do you recommend?

Edit: I'll probably go ahead and do the initial build with the 16A switch, unless somebody points out something blindingly obvious that I've missed, that makes it a huge NO-NO. But  just to be on the safe side, I just ordered a couple of 20A switches. If it seems called for, I can change out for the 20A which gives me a little more margin for error. If not, I can keep those around for a future project.

[mindcrime]

Well, FWIW, that 16A switch seems to be holding up fine so far. I think I have enough headroom / margin with that, as the fuse I put inline with the heating elements is only a 13A fuse and I haven't blown it either. 

[BeBuLamar]

For the heater there isn't much of an inrush current. The heater when cold does draw more current but not by much unlike a motor at start up.