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Unread 04-20-2013, 06:48 PM   #16
ftgiles
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Originally Posted by Knuckelhead View Post
"As long as the engine is running, all of the power for the accessories is delivered by the alternator. The battery is actually a load on the charging system. The only time that the battery would supply power with the engine running is when the current capacity of the alternator is exceeded or when engine is at a very low idle." http://www.bcae1.com/charging.htm

Thanks for verifying my point...
You'd think the only verification needed is the fact that the little wire from the alternator doesn't melt when you use your winch with the vehicle running. But then it wouldn't be mysterious.

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Unread 04-20-2013, 08:13 PM   #17
freeskier93
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Quote:
Originally Posted by Knuckelhead

"As long as the engine is running, all of the power for the accessories is delivered by the alternator. The battery is actually a load on the charging system. The only time that the battery would supply power with the engine running is when the current capacity of the alternator is exceeded or when engine is at a very low idle." http://www.bcae1.com/charging.htm

Thanks for verifying my point...
This is the same point I'm trying to make too...

I guess I should have directly said that they both provide power during a winch pull. It goes back to what Jerry said that a winch is connected to the battery and won't draw any power from the alternator, which I was saying is not true because the battery, alternator, PDC, and anything else connected to the battery are in parallel with each other. During normal conditions the alternator provides all the power and charges the battery, but under circumstances where power draw exceeds that of the alternator power is drawn from both the alternator and battery.
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Unread 04-20-2013, 08:49 PM   #18
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Originally Posted by freeskier93 View Post
This is the same point I'm trying to make too...

I guess I should have directly said that they both provide power during a winch pull. It goes back to what Jerry said that a winch is connected to the battery and won't draw any power from the alternator,
No, if you re-read what I said you will see I only said the winch doesn't draw power from the PDC. To make that even more clear, I also reminded you the winch is connected directly to the battery. Therefore, again, the winch does not (!) draw any of its power through the PDC.
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Unread 04-20-2013, 08:51 PM   #19
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Originally Posted by Jerry Bransford View Post
No, if you re-read what I said you will see I said the winch doesn't draw power from the PDC. To make that even more clear, I also reminded you the winch is connected directly to the battery. Therefore, again, the winch does not (!) draw any of its power through the PDC.
When did I say a winch would draw power from the PDC? The only thing the PDC has to do with this is the alternator and battery share a common connection there.
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Unread 04-20-2013, 08:54 PM   #20
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Originally Posted by freeskier93 View Post
When did I say a winch would draw power from the PDC?
When you recommended replacing the 100 amp fuse going to the PDC you recommended with a larger 150 amp fuse if a winch is present. Running a winch doesn't draw more power through the PDC.
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Unread 04-20-2013, 08:59 PM   #21
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Originally Posted by Jerry Bransford View Post
When you said you'd want a to replace the 100 amp fuse going to the PDC with alarger 150 amp fuse to the PDC if a winch is present.
Yes, because a winch is going to max out the alternator output and pull the rest of its amps from the battery. Therefore if you have an alternator rated for 117 amps and it's running at that maximum during a winch pull, you're going to blow a 100 amp fuse.
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Unread 04-20-2013, 09:03 PM   #22
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I give up, you just aren't getting it. This is a subject I have taught in school & I just don't have the time or inclination to waste any more time going in circles.
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Unread 04-20-2013, 09:06 PM   #23
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I don't understand why this is so complicated. A winch will draw power from BOTH the battery AND alternator. I don't know why you're still stuck on the PDC, it's irrelevant. Take it out of the picture, connect the alternator directly to the battery it's the same thing! It's no different than having two batteries in parallel with a lightbulb.
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