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Block Heaters

Old 01-28-2003, 06:34 PM
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Block Heaters

Anyone have a rough idea as to what range in watts a typical block heater uses? Have 4 trucks being plugged in and need to know how big the circuit should be. Any &quot;rough&quot; ideas would be appreciated.<br>Thanx, Rick
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Old 01-28-2003, 06:39 PM
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Re:Block Heaters

CattleHauler (Ricki) just replaced his, it was a 750W-120V.
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Old 01-31-2003, 11:41 AM
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Re:Block Heaters

How hot you think the block heater keeps at?
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Old 01-31-2003, 04:25 PM
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Re:Block Heaters

Keeps the hood of the truck snow free during a light snowfall. And the truck thinks that it's actually warm when it starts up
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Old 01-31-2003, 07:12 PM
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Re:Block Heaters

I used my block heater when the temps got down to 7 degrees a couple of weeks ago.. didn't seem to do a whole lot for warm up. I'm pretty sure it was working because something was drawing enough current to make the plug spark when I unplugged it.
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Old 01-31-2003, 07:53 PM
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Re:Block Heaters

If you are going to use 4 heaters at the same time that will use about 12.5 amps @120 volts so a 15 or 20 amp circuit will do the trick
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Old 02-01-2003, 12:30 PM
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Re:Block Heaters

Thanx for the reply's, we just went ahead and ran dual 20 amp lines just to be on the safe side.
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Old 02-01-2003, 03:41 PM
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Re:Block Heaters

[quote author=figure_9_pro link=board=13;threadid=10206;start=0#99059 date=1044064393]
If you are going to use 4 heaters at the same time that will use about 12.5 amps @120 volts so a 15 or 20 amp circuit will do the trick
[/quote]

I'm not sure what you based your figures on, fig. The heater consumes around 750 watt (pure resistive load) so that's around 6 amps and some change. So you're looking at about 25 amp total for the 4 vehicles. JYD, I think you made the right move with the 2 20 amp circuits.
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Old 02-01-2003, 03:54 PM
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Re:Block Heaters

Commatoze, I actually came up with 6.5 amps per heater so it holds out on paper. Thanx again for all input
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Old 02-01-2003, 04:29 PM
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Re:Block Heaters

OK OK so when I add it with a calculator instead of my head I come up with 25 amps.......I hate when that happens [undecided]
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Old 02-01-2003, 04:43 PM
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Re:Block Heaters

[quote author=figure_9_pro link=board=13;threadid=10206;start=0#99332 date=1044138592]<br>OK OK so when I add it with a calculator instead of my head I come up with 25 amps.......I hate when that happens [undecided]<br>[/quote]<br><br>I can't count to 20 without taking my shoes off. <br><br>Like Jethro Clampett I studies Gozintas.
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