Here are some pics of the control panel for my yet to be built electric HERMS rig. Two Auber PID's which im not to crazy about. They dont have much of a lip so they dont seal very tight to the panel. I was thinking of finding an O ring that fits tight around them, maybe that will help. All the LED switches are from automation direct. Green for pumps, Red for elements, clear for HLT stirrer, and Blue for water fill. One pump is a three way, recirculate, and sparge will have a float switch.
Well, there is a fair ammount of heat generated over the course of a 60 miunute boil. I have my cycle time set at 1 second, and I can keep a rolling boil going at about 60-65%. That is A LOT of switching. The heat sink gets noticeably warm to the touch, and mine is mountd outside the box. If you ventilate the box well so that it can pull air in and exhaust it, you will be fine. If not, Id find a way to mount them on the exterior.
Which switches did you buy (sample item numbers) bcs I didn't think they had any that would handle element amps.
I was sorta wondering that too... the switches on thier site that LOOK similar to yours are rated at like 6A at 130VAC... and 4A at 400VAC. I hope I am missing something, or those cool looking switches wont be very helpful????
Unless you are actually using those element switches to control the PID output... that they could handle.
All the control wiring is 24 VAC. I bought a couple large 30 amp douple pole relays on ebay for the elements, and 4 smaller relays for everything else. The switches are GCX1251-24L. The switch LEDs are 24 volts also so it make it easy to wire them to illuminate when switched on.