Originally Posted by old-pasture-brew
I just used my brew hardware tube for the first time this weekend. Same 12" model as you. Worked great. Even ramped to mash out temp easily. I am doing 5gal batches and have a 240v/3500 element running off a 120v/20amp plug.
You do need to think about the length of the element and the temp probe. Bobby lays that math out on the website nicely.
I have been using the same 12" RIMS tube with 1500W 120V SS element for 4 5.5 gal batches now. Ramp up from 150F to 168F takes about 20min. I use 10gal cooler for MLT.
I do not believe there is a 3500W element short enough which can fit into 12" tube - figure 12" tube - 2" thermoprobe - 1" for spacing = 9" max for element.
If there is 3500W element under 9" exists in SS please let me know!