grounding of relay and capacitor

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cyruslam

Member - Posts: 20

Joined: May 09, 2006

Posted: May 16, 2006 at 4:27 AM / IP Logged

i have now connected 2 batteries with a relay between them, and a capacitor after the 2nd battery.

the 2nd battery negative and the capacitor negative and the relay 30 are supposed to connect to Ground.

So should i connect them to the car chassis? or to the primary battery negative(if that`s ok to do that?)? what`s the different between them?

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ff-mike

Copper - Posts: 199

Joined: November 15, 2004

Location: United States

Posted: May 16, 2006 at 4:59 PM / IP Logged

My Suburban has both battery negatives connected to the chassis, and each others negative post.

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electrostatic

Copper - Posts: 154

Joined: January 06, 2006

Location: United States

Posted: May 16, 2006 at 5:23 PM / IP Logged

chassis! when your engine is running the alternator is the source of power for your vehicle. its case is tied to the chassis of the vehicle, making the chassis your ground plane. the battery serves as a noise filter for the alternator when the engine is running.

read the ground sticky for finding a good chassis ground.

Prove your connections, use a meter!

I promise, I'll behave!

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Overcranked23

Copper - Posts: 67

Joined: December 21, 2003

Location: United States

Posted: May 16, 2006 at 6:58 PM / IP Logged

Why is there a relay between your batteries? I am confused on your set up The batteries postives should share a connection VIA jumper wire or bus bar and the same with the grounds but why a relay between them? and mabye a stupid question but did make sure that you are using 2 new batteries and of the smae make and size?

don't fowl the track

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cyruslam

Member - Posts: 20

Joined: May 09, 2006

Posted: May 17, 2006 at 12:25 AM / IP Logged

thx for all the answer above.

The relay is working as a isolator.

Thx

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Overcranked23

Copper - Posts: 67

Joined: December 21, 2003

Location: United States

Posted: May 17, 2006 at 3:04 PM / IP Logged

Just wondering what kind of relay are you using? what type and size(rated current handling)?

don't fowl the track

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grounding of relay and capacitor

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