fried alternator?

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Aug 12, 2010
40
macgregor 26M Macgregor 26M newcastle
My grandson, 10, inadvertedly shut off the main switch from all to off WHILE THE ENGINE WAS RUNNING. About 20 seconds later, I learned what he did and immediately shut off the engine. Then I put the dial back to # 1 and started the engine. It seemed alright. Did I damage the alternator and how can I tell ?
 

wetass

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Mar 9, 2011
190
CS 36T Seattle
If its still charging all is good - The problem would have happened instantly when that switch was thrown - You didn't really need to shut the motor down. Once it was thrown to off, if you switch it back and its still charging, you dodged a bullet. its the voltage spike you trying to avoid associated with opening the circuit.
 

wetass

.
Mar 9, 2011
190
CS 36T Seattle
Wire the alternator + output directly to the house battery and you wont have to worry about this in the future. I changed mine since I have three little kids and I KNOW they would eventually throw that switch - I did it to my dad when I was their age ;-) He didn't dodge the bullet.
 
Jan 22, 2008
597
Oday 35 and Mariner 2+2 Alexandria, VA
Possibly damaged. But, honestly...probably not. Check the voltage output while it is running. 13.4 or greater as a rough check.
 
Feb 26, 2004
23,101
Catalina 34 224 Maple Bay, BC, Canada
Probably not, BUT....

It All Depends on How It's Wired.

If your alternator output (AO) goes to the C post of the 1-2-B switch, then PERHAPS, and the only way to know is to run your engine and measure the voltage.

You may be interested in this Electrical 101 topic: http://c34.org/bbs/index.php/topic,5977.0.html
 
Aug 12, 2010
40
macgregor 26M Macgregor 26M newcastle
thanks

Probably not, BUT....

It All Depends on How It's Wired.

If your alternator output (AO) goes to the C post of the 1-2-B switch, then PERHAPS, and the only way to know is to run your engine and measure the voltage.

You may be interested in this Electrical 101 topic: http://c34.org/bbs/index.php/topic,5977.0.html
thanks for all the help. It looks like the alternator is okay . Will monitor voltage Russ
 
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