Block heater
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Elder User
Joined: Mar 2005
Posts: 545
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From: Denison, Tx
Block heater
Installed the cord on my block heater today .Does anyone know what the resistance of the heater should be? Mine reads 15 ohms thru the cord. If I remember my Ohms law I=E/R should yield the approx current which equates to 8 amps. seems low . Any comments?
Lead Driver
Joined: Sep 2003
Posts: 5,241
Likes: 3
From: Other side of the sunrise
I just wired in a 15 amp Marinco male outlet on the bumper of my Superduty and wired in the block heater cord. I was concerned about the 15 amp inlet being a little to light duty so I called the Ford Service Center to find out the draw on the block heaters. I can't remember exactly what the amperage was but it was only 7 or 8 amps. I think you're good to go.
I'm not an electrician so I'm not sure if I am answering your question but for what it's worth, there is my experience.
I'm not an electrician so I'm not sure if I am answering your question but for what it's worth, there is my experience.
Elder User
Joined: Jan 2007
Posts: 620
Likes: 0
From: Langley, BC, Canada
I just wired in a 15 amp Marinco male outlet on the bumper of my Superduty and wired in the block heater cord. I was concerned about the 15 amp inlet being a little to light duty so I called the Ford Service Center to find out the draw on the block heaters. I can't remember exactly what the amperage was but it was only 7 or 8 amps. I think you're good to go.
I'm not an electrician so I'm not sure if I am answering your question but for what it's worth, there is my experience.
I'm not an electrician so I'm not sure if I am answering your question but for what it's worth, there is my experience.
More Turbo
Joined: Jun 2007
Posts: 537
Likes: 3
From: Carvel, AB, Canada
Just make sure you use a decent extension cord. The longer you go, the thicker the gauge. A lot of guys also get zapped when plugging in the heater - use a GFI outlet. If it trips you've got some type of issue, be it a damaged wire to salt on the prongs.
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