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Getting close to snow time here and got to thinking. Always dangerous. Anyway, the tractor lives in my detached garage and it would be kind of nice to be able to turn the block heater on for a while before actually walking out to the garage. Looking at the remote switched or wifi enabled outlets but didn't want to get a 15 amp if the draw is more than that. Actually thinking the wifi enabled would be the way to go as they're programmable and I can set it to turn on for say 4:30 am when there is snow predicted and have a nice warm engine as soon as I go out.


Thanks,
Dean
 

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If someone doesn't beat me to it, I will measure mine and let you know.

My guess is it's designed to be 15amps or less, otherwise most extension cords (the 15amp kind) would present a fire risk.
 

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The Deere block heater that is sold for the SCUTs (Deere P/N AM134805) is only a 400 watt unit. That's only 3.33 amps current draw. A 15 amp circuit should be more than adequate.
 

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I just checked mine and its the same as JDDave... 3.7amps @ 413 watts. It works great preheating the water, but cycling the glow plugs a couple of times helps with the smoking bucking start up as well.
 

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I don't have the numbers to back it up like some of you, but earlier this year I was running the block heater on my Deere, the block heater on my wife's TDI, and the block heater on my Powerstroke off of the same 15 amp circuit.

Much cheaper than a wifi plug is using a Christmas light timer. It also has the benefit of functioning automatically while I'm sound asleep. I set mine up so the heater in my truck comes on around 2am and shuts off around 7:15 when I leave. I've heard a few different recommendations on how long to let a vehicle "soak" on the heater, but I have found that four to six hours depending upon ambient temperature is a pretty good place to start.
 

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On my PSD, the OBS 7.3L, the block heater is 1000W, 8.7A more or less. I'd run it on a heavy duty timer for three hours before I left for work. Before I had the timer I'd plug in when I got home from work and unplug when I got in the shop to go to work in the morning. I even carried a 50 ft extension cord and parked next to the building at work if it was really cold. Never needed to plug it in even at below zero F. Temps as long as I had 10W-30 oil in it. I got caught with 15W-40 in it when a November cold snap went 10 below zero, I heard terrible noises out of my PSD that night! I went home and changed the oil to 10W-30. I have run block heaters for 2-3 days. Dad ran the one on his #1 snow mover (FARMALL M with 4" M&W pistons, M&W lived hyd, Char-Lynn P/S, and Stan-Hoist loader) for 2-3 MONTHS straight! It all depends on your electric rates and how big a monthly bill you can tolerate and how important it is your snow mover has to start.
 
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