I'm going to post my problems and issues thread for my eBIAB system soon. One issue I ran into while recirculating during the mash was that at full open, the pump actually emptied the space under the basket and bag. I didn't notice and most likely dry fired the element for a while. Continued...
Might be slightly cheaper to get a punch set from harbor freight tools. They have a 20$(?) punch set with a punch slightly larger than 1 1/4.
Quality is bad. My small punch broke. But the large one held up to one use.
That being said. Welding the nut on sounds like a much better solution.
You'll have around 24 Amps running through that switch, so as long as you can find a 24 Amp - 220 V switch, go for it.
It's 220 V since when it is switched off, the 2 sides of the switch will be from Hot A - Hot B, which is 220 V.
I've been trying out different Porter recipes, and I think I will try this one next.
I am also very curious about your process for adding peppers. Did you have an amount that worked well?