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The idea behind grounding to chassis is creating a shorter ground path, which is easier to connect/disconnect, and involves less physical wire.
I've read two seperate things and am unsure whats right.
Some people say you should connect the ground to the car chassi.
Others say the ground should connect to the Battery Negative terminal.
Basically I have an amp which has +12v, and a Ground. Additionally I also have an inverter which has + and - points.
I assume the ground and negitive points of both devices are the same thing just called different things.
I so then: What and where do I connect the negitive terminal of the inverter and the ground wire from the amp???
just what I wanted to hear, thanks...
Why some devices refer to ground as negative, or negative as ground, I dont know...!
negative isnt always ground. AFAIK...
we do have 3 prong plugs in our houses?
(0.0%-) starting over
iPad 3G 64GB, RF 600.5 amp, JL10W0V2, 8 Infinity Components
The current in your house is alternating + and - that is the reason you use a third wire for the ground, for the purpose of preventing the item from getting fried due to an electrical surge from things such as lightning... Your vehical uses a direct curent, one wire will always be + and the other will always be -, the reason you "ground" your negative to the car chasis is due to the fact that the chasis is used for the negative in the cars electrical system...Originally Posted by sdashiki
Duh, im stoopid, didnt even contemplate the AC/DC differences.
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iPad 3G 64GB, RF 600.5 amp, JL10W0V2, 8 Infinity Components
Dont be so hard on yourself man....
The reason some people will ground to the negative battery terminal is that on average, the chassis of your car is only equivilant to about a 4 gua wire.
That and grounding to the battery eliminates the possibility of ground loops.
If you do ground to the chassis of the car be sure to follow proper procedure. Keep the ground as short as possible and be sure to scrape away any and all paint. Ground to bare metal and for petes sake, don't just use a metal screw for this. Use a nut and bolt.
Jan Bennett
FS: VW MKIV Bezel for 8" Lilliput - 95% Finished
Please post on the forums! Chances are, someone else has or will have the same questions as you!
Positive?
But don't take it from me! here's a quote from a real, live newbie:
eegeek.net
To confused you even more. In other place in the world, it also called Earth.I've read two seperate things and am unsure whats right.
Some people say you should connect the ground to the car chassi.
Others say the ground should connect to the Battery Negative terminal.
Basically I have an amp which has +12v, and a Ground. Additionally I also have an inverter which has + and - points.
I assume the ground and negitive points of both devices are the same thing just called different things.
I so then: What and where do I connect the negitive terminal of the inverter and the ground wire from the amp???
Ground, Negative, Earth are all the same thing (well for DC, it is.)
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