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generator shutdown relay


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cairnsgse 
Member - Posts: 7
Member spacespace
Joined: April 28, 2011
Location: Australia
Posted: April 28, 2011 at 6:40 PM / IP Logged  

Hi to all

have used diagrams on this site before with a lot of success before but now need help

have small electric start generator that used a powered solinoid to shut fuel off and then flattened battery . Is there a relay set up that with 12v ign source isolates neg coil wire and when ign off earths out coil wire and stops engine

cheers

oldspark 
Gold - Posts: 4,913
Gold spacespace
Joined: November 03, 2008
Location: Australia
Posted: April 29, 2011 at 1:16 AM / IP Logged  
Your post is ambiguous.
Any changeover relay with 87a & 30 can be used to short points etc to GND when IGN +12V is off.
A normal on-off relay can be used with 87 & 30 to connect power or ground to an IgCoil. I'd suggest in the the IgCoil +12V supply rather than its GND (to the points).
Both relays need to be rated at several Amps. I'd suggest 15A or 30A relays.
As to cutting fuel, it is usually the "run" 12V signal that opens the fuel cut solenoids.
Things like fuel pumps are usually controlled by a running sensor - eg, a charge lamp circuit as used for the UIBI (battery isolator), but that requires a prime circuit for cranking/starting (the UIBI type circuit being used to ensure fuel pumps are shut off should an engine stall).
hotwaterwizard 
Silver - Posts: 1,350
Silver spacespace
Joined: December 11, 2003
Location: California, United States
Posted: May 03, 2011 at 1:57 AM / IP Logged  

Sounds like the relay is in the wrong place or the wrong type.

See if the key switch has a wire that grounds out when it is in the off position. That is what most of the manufactures use instead of a relay. Just hook that ground wire to the kill.

generator shutdown relay -- posted image.

John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

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