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Old 10-16-2010, 05:20 AM   #1
bacampbe
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Default Fermentation Temperature Controller Sanity Check

I am not an electrical guy at all. I'm looking for advice, flaws, or any input really. Be rough I want to get it right before I wire it all up. I have some of the parts in the image and am sourcing some of the rest.

sanity-check-image.jpg

First the Parts:

Green lines are ground, Red are hot, black neutral

1. GFCI http://www.amazon.com/TRC-90265-6-012-Shockshield-Portable-Protection/dp/B000XU5MEG/ref=pd_cp_hi_1

2. PLUG http://www.amazon.com/Leviton-R03-05266-C-Straight-Blade-5-15P/dp/B000P9SXXW/ref=sr_1_19?ie=UTF8&qid=1287202479&sr=8-19

3. Busbar http://www.amazon.com/gp/product/B0009TUFWA/ref=oss_product

4. SPST Switch, no link but it is 20A @ 125V

5. Fuse Holder - Planning on .25A Quick Burn for the PID and 20A for the SSR

6. Auber SYL-2362 (those wires should hit pins 1 and 2) http://www.auberins.com/index.php?main_page=product_info&cPath=1&products_ id=106

7. 40A SSR http://www.auberins.com/index.php?main_page=product_info&cPath=2&products_ id=30

8. 15A Wall Outlet http://www.amazon.com/Leviton-689-E-Recessed-Receptacle-Residential/dp/B0017WKSWA/ref=sr_1_1?ie=UTF8&qid=1287202698&sr=8-1

9. Indicator Lights 125V 1/2W

Now the Questions

-Do you see anything wrong here?
-Can I wire the indicator directly to the toggle
-Do I need any more fuses? (indicator lights?)
-Any special considerations when mounting this in an enclosure?
-Should I ground anything else?


Misc Notes
I'm planning to use 12AWG wire

Not sure on the enclosure yet but may be metal, may be plastic.

That is a heat sink under the SSR

This is to run a freezer as a fermentation chamber. I want to just snake the thermocouple into the freezer and plug the freezer into this. The enclosure will be portable.

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Old 10-16-2010, 05:25 AM   #2
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I used a Ranco single stage digital controller and wired in an extension cord for feeding in power and for an outlet to the freezer cord.

Wouldn't this work for your plan?

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Old 10-16-2010, 05:31 AM   #3
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Got the image working so it should be clearer now. I would like to be able to use this to run a RIMS tube as well down the road. That's why I'm looking for the PID/SSR combo.

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Old 10-16-2010, 12:54 PM   #4
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He would also like the option of launching a missile.

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Old 10-16-2010, 01:45 PM   #5
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Why the SSR and why 12ga wire? What are you controlling that would need it? A PID control with on/off contacts can easily handle a freezer compressor...

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Old 10-16-2010, 02:52 PM   #6
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Quote:
Originally Posted by Poobah58 View Post
Why the SSR and why 12ga wire? What are you controlling that would need it? A PID control with on/off contacts can easily handle a freezer compressor...
That PID only has 3A internal. I'm also sizing for driving a 120V element in a RIMS tube in the future with minimal changes.
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