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Old 06-26-2012, 05:34 PM   #21
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My 1650w element is pretty big. It's about 12" (off top of my head) and it folds back too. Density is probably about 100w/inch. Doesn't even affect my pvc hoses when running off mash into BK, and it was resting right on the element.


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Open log Fermenting and gas-can secondary?? I am planning my next brew right now!!
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Old 06-26-2012, 05:49 PM   #22
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Thanks! That's what I wanted to hear. I have one of the 1650W elements on the way, but was having second thoughts and considering the 240V element instead.

That Emerson 1650 is considered LWD, but I couldn't find the actual density listed anywhere. From what I've read:

HWD=150 watts/sq in
LWD=75 watts/sq in
ULWD=50 watts/sq in

But I don't know if there's an actual standard or if it varies by manufacturer.


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Old 06-26-2012, 05:53 PM   #23
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My 1500w camco has debris on it after brewing but I think it was mostly hop-gunk. It scrubs off easily enough.
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Old 06-26-2012, 07:22 PM   #24
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Originally Posted by thargrav
You can wire two of the 1650 watt elements in series for one ULWD 3300 watt element set. Or you can wire 4 in series / parallel for one ULWD 6600 watt element set that will draw about 27.5 amps from a dryer circuit.
False. Two elements in series will run at 1/4 of the power at the same voltage due to the doubled resistance and subsequent halved current.
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Old 06-26-2012, 08:00 PM   #25
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False. Two elements in series will run at 1/4 of the power at the same voltage due to the doubled resistance and subsequent halved current.
So, do you agree with my thinking that if I take a 4500 watt / 240 volt foldback element and wire it with 120 volts it will be the same as having an ULWD 1125 watt / 120 volt element?
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Old 06-26-2012, 08:11 PM   #26
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Absolutely
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Old 06-28-2012, 06:49 AM   #27
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Quote:
Originally Posted by thargrav View Post
You can wire two of the 1650 watt elements in series for one ULWD 3300 watt element set. Or you can wire 4 in series / parallel for one ULWD 6600 watt element set that will draw about 27.5 amps from a dryer circuit.
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Originally Posted by Bobby_M View Post
False. Two elements in series will run at 1/4 of the power at the same voltage due to the doubled resistance and subsequent halved current.
OP is correct. The elements mentioned are 120V elements. Wired in series on a 240V line will give you 3300 watts each. Doing a parallel wiring of 2 of these wired series will give you 6600 watts heating and consume 27.5A on a 240V circuit.
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Old 06-28-2012, 07:02 AM   #28
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Quote:
Originally Posted by Bobby_M View Post
False. Two elements in series will run at 1/4 of the power at the same voltage due to the doubled resistance and subsequent halved current.
You didn't read the entire post - two 120V elements wired in series across 240V will give you twice the wattage.

And paralleling two in series (2+2) will give you 4X the wattage across a very large area since the elements are already low density.
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Old 06-28-2012, 12:24 PM   #29
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There is a better one out there - a 1650 watt low density element manufactured by Emmerson.
http://www.drillspot.com/products/83...Heater_Element
A caution about the Emerson element, it's zinc plated. Not so good for an acid environment.
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Old 06-28-2012, 12:47 PM   #30
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A caution about the Emerson element, it's zinc plated. Not so good for an acid environment.
So, how "not so good" is "not so good?"

Are we looking at health risks, damage to the element or what?

And is the approx 5.2 pH of wort going to cause a problem?


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