how big is the installed element? - Home Brew Forums

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03-20-2011, 08:10 PM   #1
kappclark

Recipes

Sep 2006
Southern VT
Posts: 1,590
Liked 6 Times on 6 Posts

I may have an opportunity to pick up an e-kettle.

Is there a way to determine the wattage rating of the element ? (The original user/builder had passed away) ..and I assume it is 220...

THX
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Bill Clark
Windham, VT

03-20-2011, 08:23 PM   #2
beninan
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Mar 2010
Maine
Posts: 998
Liked 17 Times on 16 Posts

It may have the rating printed right on it. Or maybe even a manufacture name and model number so you could figure it out.
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03-20-2011, 08:46 PM   #3
Bachhus
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Dec 2010
Albany, OR
Posts: 126
Liked 4 Times on 4 Posts

If its a water heater type element its likely 220 but plenty of people on here run them at 110. If you cant figure out what the wattage is, its only like \$15 to replace the old one with the one you want.

03-20-2011, 09:21 PM   #4
DeafSmith

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Jan 2009
Richardson, TX
Posts: 1,448
Liked 34 Times on 32 Posts

If you have a VOM (volt-ohm-milliampmeter), you can measure the resistance of the element. If you can verify the voltage rating (maybe the cord is still connected and you can tell by the plug), then you can calculate the wattage by the formula P = V^2/R. That's the voltage squared divided by the resistance.

For 240 volt:
a 5500 watt element would have a resistance of about 10.5 ohms

P = (240)^2/10.5 = 5486.

For 115 volts:
a 1500 watt element would have a resistance of about 9.6 ohms

P = (120)^2/9.6 = 1500