Average amperage use


Information and questions on GL1800 Goldwings (2001-2017)
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bindolus
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Joined: Fri Aug 24, 2018 2:55 pm
Location: West Jordan, UT
Motorcycle: GL1800

Average amperage use

Post by bindolus » Sat Oct 06, 2018 7:51 pm



Anyone here has any information on the average amperage use on a GL1800..??
I understand the alternator average output at normal RPM is around 900 watts and as high as 1.2 Kw at 5K RPM?

I'm planning on purchasing full heated gear for my wife and I and i don't want to run the alternator more than 70% of capacity for a long period of time..
With heated seats and and heated grips as well as all electronics and light running, not sure how much power left to spare??



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WingAdmin
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1982 GL1100A Aspencade (sold)
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Re: Average amperage use

Post by WingAdmin » Mon Oct 08, 2018 12:47 pm

bindolus wrote:
Sat Oct 06, 2018 7:51 pm
Anyone here has any information on the average amperage use on a GL1800..??
I understand the alternator average output at normal RPM is around 900 watts and as high as 1.2 Kw at 5K RPM?

I'm planning on purchasing full heated gear for my wife and I and i don't want to run the alternator more than 70% of capacity for a long period of time..
With heated seats and and heated grips as well as all electronics and light running, not sure how much power left to spare??
Average output is 900 watts? That's 75 amps...that's a tremendous amount of power. The alternator might be CAPABLE of putting out that kind of power at that RPM, but I very much doubt that it is averaging that kind of output.

I have a current shunt ammeter that you plug in place of a blade fuse, and will tell you how much current is going across that fuse. I can't seem to find it online, but I know they exist - you could plug that across each fuse and add up the results to find out how much power your bike is pulling from the alternator.

Alternatively, you could use something like this cheap meter:

https://www.amazon.com/MICTUNING-6-5-10 ... B01JOUZELG

If you hook the shunt up in series with the output of the alternator, it will tell you exactly how much load is being put on the alternator. That should give you an idea of how much reserve you have.

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keithg64
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2000 GL1500 Pearl Coranado Blue -sold

Re: Average amperage use

Post by keithg64 » Thu Oct 18, 2018 12:29 pm

Is it like this fuse current circuit amp tester.

https://www.harborfreight.com/30-amp-au ... 67724.html
It's not what you buy, it's what you build.

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WingAdmin
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1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Average amperage use

Post by WingAdmin » Thu Oct 18, 2018 6:56 pm

keithg64 wrote:
Thu Oct 18, 2018 12:29 pm
Is it like this fuse current circuit amp tester.

https://www.harborfreight.com/30-amp-au ... 67724.html
Yes, that is a shunt ammeter.



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