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06-09-2011, 03:47 AM
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#21
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I use secondaries. :p
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Join Date: Sep 2005
Location: Cary, NC
Posts: 11,238
Liked 64 Times on 56 Posts
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Quote:
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Originally Posted by AdamCanFly
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power / voltage = amps
5500 / 240 = 22.9 amps
A 25a SSR is technically sufficient. 40a would give you lots of headroom.
On ebay, a 25a and a 40a SSR are about the same price. Less than $15 with a heatsink.
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Ground Fault Brewing Co.
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06-09-2011, 01:03 PM
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#22
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Join Date: Dec 2010
Location: Watertown, CT
Posts: 213
Liked 4 Times on 4 Posts
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06-09-2011, 01:15 PM
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#23
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BIAB Expert Tailor, custom quality BIAB bags at reasonable prices with quick shipping
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Join Date: May 2007
Location: Jersey Shore, Jersey
Posts: 4,876
Liked 129 Times on 117 Posts
Likes Given: 4
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Quote:
Originally Posted by AdamCanFly
Crap, maybe I should just stick with propane. The rabbit hole just keeps getting deeper.
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No rabbit hole...the OP wants to build a controller for 2000w to eliminate splashing out of a shallow kettle. IMO for 5 gallon batches in a ten gallon kettle w/ 2000w, a controller is an option, not a requirement by any means. |
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06-09-2011, 01:30 PM
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#25
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BIAB Expert Tailor, custom quality BIAB bags at reasonable prices with quick shipping
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Join Date: May 2007
Location: Jersey Shore, Jersey
Posts: 4,876
Liked 129 Times on 117 Posts
Likes Given: 4
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Quote:
Originally Posted by Walker
You can probably get it cheaper by just walking into home depot or lowes. It should be less than $20.
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Yea I second Walker, that element is very common and available at most hardware stores and home centers for around 10 bucks. |
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06-09-2011, 03:48 PM
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#26
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Join Date: Apr 2011
Location: ., Connecticut
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Liked 29 Times on 29 Posts
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remember when you are running a SSR up near its rated capacity it will heat up. a lot. if you have a 20Amp load, its much easier on the SSR to get one rated for 30 or 40 amps. it gives you headroom to upgrade and is more electrically efficient (less wasted electricity as heat).
check out lightobject.com
it is a strait-from-china type of site, but they have a large selection of everything you need for cheap. ive ordered from them 3 times so far and not had a problem yet. the only thing i would stay away from would be their thermocouples. they are cheap, but the quality of them is pretty aweful. their temp controllers and SSRs are good deals and are rather high quality, though.
grab a PT100 thermocouple from grainger.com for $14 and you are good to go.
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06-09-2011, 05:03 PM
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#27
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I use secondaries. :p
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Join Date: Sep 2005
Location: Cary, NC
Posts: 11,238
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Quote:
Originally Posted by audger
remember when you are running a SSR up near its rated capacity it will heat up. a lot.
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They will heat up even if not run anywhere near their capacity. 23A through a 40A SSR will get hot as f*ck.
Quote:
Originally Posted by audger
check out lightobject.com
it is a strait-from-china type of site, but they have a large selection of everything you need for cheap. ive ordered from them 3 times so far and not had a problem yet. the only thing i would stay away from would be their thermocouples. they are cheap, but the quality of them is pretty aweful. their temp controllers and SSRs are good deals and are rather high quality, though.
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I have the same PID that lightobject sells (TET 612). I didn't get it from lightobject, but it's the same one. Works just fine for temp control.
__________________
Ground Fault Brewing Co.
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06-09-2011, 07:20 PM
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#28
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Join Date: Dec 2010
Location: Watertown, CT
Posts: 213
Liked 4 Times on 4 Posts
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I am sure there is a 1 or 2 volt drop across the ssr. If it has 20 amps through it then that 40 to 80 watts. Hence the humungas heat sink. Yikes.
The heat disapation makes a good case for a toggle switch.
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06-09-2011, 07:33 PM
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#29
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I use secondaries. :p
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Join Date: Sep 2005
Location: Cary, NC
Posts: 11,238
Liked 64 Times on 56 Posts
Likes Given: 11
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Quote:
Originally Posted by MikeinCT
I am sure there is a 1 or 2 volt drop across the ssr. If it has 20 amps through it then that 40 to 80 watts. Hence the humungas heat sink. Yikes.
The heat disapation makes a good case for a toggle switch.
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and the arcing you will get from a toggle switch makes a good case for the SSR. 
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Ground Fault Brewing Co.
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