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Start here at the bottom of page 3: https://www.homebrewtalk.com/f51/pwm-boil-kettle-control-159193/

Where did you have the founders, at the brew pub?

Never mind what I said about the coils - I felt the side of the freezer and it was warm. I think I'll be doing the corn starch test after all.

You are right the shelf was a huge improvement. The steel angles have a spacer screwed in each one that slides into the existing shelf holes of the freezer. I slid all 4 brackets with spacers in first then set the shelf on the brackets and screwed them to the bottom of the shelf. The power...

First I took the entire cobra tap apart completely. Then I cut the barbed portion of the body off with a hack saw. Then where the barb used to be I drilled and tapped a 1/8 NPT threaded hole using a drill bit and 1/8 NPT tap I borrowed from my work. Then once it was cleaned up and put back...

Revised my plans a little bit, here's the latest revision:

Here's my electrical diagram that I made by chopping up one of P-J's.

Thanks for the input! I haven't completely ruled out a pid yet but on my propane rig I use a remote thermometer that has a receiver I can walk around with and I just turn the burner off when I get to temp. Haven't overshot it once. All that being said I do like the coolness factor of the pid...

Okay that's fine I totally understand if you don't want make one up. The schematic is quite simple actually, I've sketched my own but I thought it would be nice to have one of your versions posted here because they look nice and that's what people are used to seeing. No problem, I'll make...

Out of curiosity why not?

Could you give a link to an example? I would appreciate it!

Basically I’m converting my propane rig to electric. I’m looking at doing something similar to this: With the following exceptions: 1.) No pumps. 2.) The PID would be replaced with a PWM like this one: http://www.bakatronics.com/shop/item.aspx?itemid=383 with the C1 replaced by...

Thanks again P-J. One more question, in order to make the spa panel portable, I need a cable that plugs into an existing dryer 4-prong outlet that is about 15 feet away from where the spa panel will be. Can I make my own cord/plug combo? I haven't seen any plugs that don't already come with...

Ok thanks. An even more economical solution I stumbled across would be to use an inline GFCI cable (30A 10gauge 4 conductor) that plugs into a dryer outlet and the other end would be hard wired into the control panel box. Does this sound ok? or NEC compliant?

One more question, does the spa panel have to go on a dedicated circuit by code? Or could I wire it into the 30A 240V going to the garage which has its own sub panel and very little demand (garage door openers and lights). I would use a junction box right outside the main panel box.