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Dec 9, 2010 | 07:01 PM

#16

superduty4x4

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Joined: Jul 2003

Posts: 12,177

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From: Newport, WA

Quote:

Originally Posted by Hussler

Simple OHMS law ..

I = E/R where E= 120 volts and R = 14 OHMS (heater element) on my rig.

8.571 amps = 120 / 14

Power equation is ..

P = I * I * R

1028 Watts = 8.571 * 8.571 * 14

You math types and your fancy formulas

Dec 9, 2010 | 07:09 PM

#17

FARM69

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Joined: Jan 2004

Posts: 3,207

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From: Kearney, Nebr

If you concerned about your electricity bill but want to keep some heat on it look into getting an oil pan heater. A 200-500w pan heater will keep the engine warm enough to start no matter how cold it is. You won't be blowing warm air at the start up but it will work fine.

This is a pretty common mod on guys that leave their loader tractor plugged in all winter.

Dec 9, 2010 | 07:22 PM

#18

Ken_C

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Joined: Aug 2009

Posts: 869

Likes: 1

From: Michigan

Nice job with the ohms law. suppose I could have ohmed it out and took a volt reading. it is a pure resistive device. so that formula definitely applies. thanks everyone for the input.

Dec 9, 2010 | 07:23 PM

#19

Hussler

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Joined: Sep 2007

Posts: 4,195

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From: Medford Oregon

Quote:

Originally Posted by superduty4x4

You math types and your fancy formulas

Chase, no disrespect meant. Just showing the simple equations on how to do it.

Dec 9, 2010 | 07:33 PM

#20

Ken_C

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Joined: Aug 2009

Posts: 869

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From: Michigan

for us "non - math types"
P3 - Kill A Watt
been meaning to get one of these.

Dec 9, 2010 | 09:17 PM

#21

Hussler

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Joined: Sep 2007

Posts: 4,195

Likes: 6

From: Medford Oregon

Quote:

Originally Posted by Ken_C

Nice job with the ohms law. suppose I could have ohmed it out and took a volt reading. it is a pure resistive device. so that formula definitely applies. thanks everyone for the input.

Ah, a man that knows his electronics .. your right , ac devices has impedance which makes the formulas a bit harder. but not really that much. To show my age when I was taking my tests back in the late 60's and early 70's calculators were not allowed, only slide rules .. anyone know how to use a slide rule? All the math had to be calculated on a piece of paper to show the instructor you knew the concepts, step by step. It was a pain in the butt but did force us to mentally understand the equations without computers.

Don't really know why I went here except I was thinking about it the other day how hard I though it was but thankful the old school processes made my mine work.