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| Re: [GMCnet] Electrical Wiring Size? [message #162754 is a reply to message #162752] |
Mon, 12 March 2012 13:29   |
Dave Mumert
Messages: 272
Registered: February 2004
Location: Olds, AB, Canada
Karma: 0
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Senior Member |
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Hi Gary
What voltage are you connected to?
What kind of load, resistive (heater) or inductive (motor)?
The resistance is .64 ohms per 1000 feet, that is one way. So out and back
would be twice that.
So at 19 amps the voltage drop would be .64 * 2 * 19 = 24.32 volts in 1000
feet or 2.432 volts in 100 feet. Resistive loads won't mind that voltage
drop but motor type loads may not be happy.
Dave
> -----Original Message-----
> Subject: [GMCnet] Electrical Wiring Size?
>
> Can someone tell me the maximum length of 8 AWG wire I can safely use
> with a 19 amp current draw?
>
> Thanks,
>
> Gary Bovee
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| Re: [GMCnet] Electrical Wiring Size? [message #162759 is a reply to message #162758] |
Mon, 12 March 2012 14:00 |
Dave Mumert
Messages: 272
Registered: February 2004
Location: Olds, AB, Canada
Karma: 0
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Senior Member |
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Hi Gary
Further to my previous calculations:
So at 19 amps the voltage drop would be .64 * 2 * 19 = 24.32 volts in 1000
feet or 2.432 volts in 100 feet, or .24 volts in 10 feet. The compressor is
going to have an inrush or startup current much higher than the run current.
It is really the start current you need to consider.
You can get an idea of the startup current by measuring the motor resistance
with an ohm meter.
What distance did you need to run?
Dave
> -----Original Message-----
> From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-
>
> Dave,
>
> 12 volt batteries.
>
> The load is coming from the coaches air compressor.
>
> Gary
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| Re: [GMCnet] Electrical Wiring Size? [message #162838 is a reply to message #162752] |
Tue, 13 March 2012 05:04 |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
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Senior Member |
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Hey Dan:
That engineering toolbox website is a great site for these kinds of questions. It asks to use it's mobile site if you log on with an iPhone!
I created a desktop link!!
Thanks for the link!!
Cheers, beers and best regards
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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| Re: [GMCnet] Electrical Wiring Size? [message #163065 is a reply to message #162838] |
Thu, 15 March 2012 12:20 |
Kudzu
Messages: 377
Registered: November 2011
Location: Marshville, NC
Karma: 0
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Senior Member |
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I've gone there many times but didn't realize they had a mobile version.
Have it on my iPhone now too. Thanks!
Dan in NC
Caregiver to a 1976 Eleganza II
"Tzetze Fly"
On 3/13/2012 6:04 AM, John Heslinga wrote:
>
> Hey Dan:
>
> That engineering toolbox website is a great site for these kinds of questions. It asks to use it's mobile site if you log on with an iPhone!
>
> I created a desktop link!!
>
> Thanks for the link!!
>
> Cheers, beers and best regards
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Unsubscribe or Change List Options:
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1976 Eleganza II
1996 Chevy Impala SS
1999 Kawasaki Vulcan Nomad
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