Why Run A Ground Wire From The Battery to the amp?

[UNDERGROUND_BUM 10+ year member]

Ok thanks that would be good, but when jumping your car they ALWAYS recomend jumping to the positive and connecting the negative to the frame so as to avoid blowing up your battery should it not be grounded. So the real ground surely must be the frame.

how did you even jump start your car like that? did you grind down to bare metal and then attach the negative to your car. lol //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 

[UndercoverPunk 5,000+ posts]

The only reason I could think someone would tell you to jump a car like that is because they think you are an idiot and can't handle two connections that close to each other.

 

[lilmaniac2 5,000+ posts]

Ok thanks that would be good, but when jumping your car they ALWAYS recomend jumping to the positive and connecting the negative to the frame so as to avoid blowing up your battery should it not be grounded. So the real ground surely must be the frame.

lol, you sound like the old guy who was helping me jump start my old car, he said I have the cables but i forgot the instructions to using them... LOL

 

[UNDERGROUND_BUM 10+ year member]

ur doing a good job lilmaniac2........ im learning some stuff (ahhhh the stuff they don't teach you in high school )lol

 

[UNDERGROUND_BUM 10+ year member]

come on guys...... i think we ruined him enough ; )

 

[lilmaniac2 5,000+ posts]

The only reason I could think someone would tell you to jump a car like that is because the think you are an idion and can't handle to connections that close to each other.

sad thing is that that is how all the old people I know think of jump starting, when I hook it up batt to batt they always freak out.

Also when i disconnected my buddies battery ground and then touched his battery to his frame he freaked out lol

 

[lilmaniac2 5,000+ posts]

ur doing a good job lilmaniac2........ im learning some stuff (ahhhh the stuff they don't teach you in high school )lol

I actually learned all of this in high school. 2 years of electrical ed is fun stuff

Votec FTW

 

[Justintoxicated 10+ year member]

i never jump start my car like that.........always - bat to - bat + batt to + batt

Well I'm lazy so I use the battery ground as well, but technicaly you are not supposed to, not on the car your trying to jump anyways. Perhaps it is just a means to ensure the battery is properly grounded (car won't start but also will not damage the battery if it is not properly grounded).

The battery's ground itself is not a true ground unless it is grounded. It is a loop in the end but I still can't imagine 0ga would conduct better than 2 box frame rails that are 1000 times more massive?

So if I'm understanding this right your saying the battery terminal is actualy the ground (not the frame) and it's only grounded to the frame so that other items in the car only need a power wire?

You cans ee how to properly jump a car

here http://www.cartalk.com/content/features/roadside/jumpstart.pdf

here http://www.pepboys.com/car_care_corner/car_care_basics/maintenance/jump_starting_your_battery_using_another_car/

here http://autorepair.about.com/cs/doityourself/a/bljumpstart.htm

Electricity flows in the path of least resistance, the frame of the vehicle should be able to absorb more power than negative mass inside small battery hence making the frame on the vehicle the true ground.

 

[lilmaniac2 5,000+ posts]

Well I'm lazy so I use the battery ground as well, but technicaly you are not supposed to, not on the car your trying to jump anyways. Perhaps it is just a means to ensure the battery is properly grounded (car won't start but also will not damage the battery if it is not properly grounded).
The battery's ground itself is not a true ground unless it is grounded. It is a loop in the end but I still can't imagine 0ga would conduct better than 2 box frame rails that are 1000 times more massive?

So if I'm understanding this right your saying the battery terminal is actualy the ground (not the frame) and it's only grounded to the frame so that other items in the car only need a power wire?

You cans ee how to properly jump a car

here http://www.cartalk.com/content/features/roadside/jumpstart.pdf

here http://www.pepboys.com/car_care_corner/car_care_basics/maintenance/jump_starting_your_battery_using_another_car/

here http://autorepair.about.com/cs/doityourself/a/bljumpstart.htm

yes, to the bold.

and it wont blow up your battery, it wont destroy the wires and it wont kill your first born. Just because the idiots who make the cables put a specific way to put it on there to cover there ***** in a lawsuit doesnt make it the correct and only way.

I bet they make you hook the ground up to the frame so you dont mix up battery terminals on the car //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Look up the metal content of a frame of a car, and then look at the metal conductivity chart, see which one is higher up, steel or oxygen free copper

 

[lilmaniac2 5,000+ posts]

Well I'm lazy so I use the battery ground as well, but technicaly you are not supposed to, not on the car your trying to jump anyways. Perhaps it is just a means to ensure the battery is properly grounded (car won't start but also will not damage the battery if it is not properly grounded).
The battery's ground itself is not a true ground unless it is grounded. It is a loop in the end but I still can't imagine 0ga would conduct better than 2 box frame rails that are 1000 times more massive?

So if I'm understanding this right your saying the battery terminal is actualy the ground (not the frame) and it's only grounded to the frame so that other items in the car only need a power wire?

You cans ee how to properly jump a car

here http://www.cartalk.com/content/features/roadside/jumpstart.pdf

here http://www.pepboys.com/car_care_corner/car_care_basics/maintenance/jump_starting_your_battery_using_another_car/

here http://autorepair.about.com/cs/doityourself/a/bljumpstart.htm

Electricity flows in the path of least resistance, the frame of the vehicle should be able to absorb more power than negative mass inside small battery hence making the frame on the vehicle the true ground.

ninja edit punk

Your wrong dude, read what i posted. If the frame absorbs energy, everytime you touched it, it would shock the shit out of you.

here is how a battery works. The frame doesnt absorb anything, it is meerly a highway for the electrons to ride on

http://www.howstuffworks.com/battery.htm

 

[UndercoverPunk 5,000+ posts]

Well they do it in case your battery is spewing combustible gas... Which I've herad of like an old wives tale....

I keep my face away anyway, and I try to not use shitty batteries.... Point taken though.

 

[lilmaniac2 5,000+ posts]

That is the origin of the TRUE negative, now im not sure if this is the exact construction of your battery ( there are a couple different variations, but they all work on the same chemical reaction )

 

[UNDERGROUND_BUM 10+ year member]

I actually learned all of this in high school. 2 years of electrical ed is fun stuff
Votec FTW

i wish i learned that in high school...... my high school sucked:crap:

 

[lilmaniac2 5,000+ posts]

i wish i learned that in high school...... my high school sucked:crap:

Your in hawaii, i bet your classes consisted of surfing and how to put sun tan lotion on hot chicks, along with the occasional hula class.

I'm in podunk WV where we work for a living

 

[Hintzyboy 5,000+ posts]

Well I'm lazy so I use the battery ground as well, but technicaly you are not supposed to, not on the car your trying to jump anyways. Perhaps it is just a means to ensure the battery is properly grounded (car won't start but also will not damage the battery if it is not properly grounded).
The battery's ground itself is not a true ground unless it is grounded. It is a loop in the end but I still can't imagine 0ga would conduct better than 2 box frame rails that are 1000 times more massive?

So if I'm understanding this right your saying the battery terminal is actualy the ground (not the frame) and it's only grounded to the frame so that other items in the car only need a power wire?

You cans ee how to properly jump a car

here http://www.cartalk.com/content/features/roadside/jumpstart.pdf

here http://www.pepboys.com/car_care_corner/car_care_basics/maintenance/jump_starting_your_battery_using_another_car/

here http://autorepair.about.com/cs/doityourself/a/bljumpstart.htm

Electricity flows in the path of least resistance, the frame of the vehicle should be able to absorb more power than negative mass inside small battery hence making the frame on the vehicle the true ground.

The reason your battery is connected to the frame is so that all your car's electronics have a way to complete the loop withtout running 10,000 wires back to the battery. IT ALL STARTS WITH AND MUST END WITH THE BATTERY.

The metal in your frame is less conductive than the metal in a length of 0 gauge. It has many more things to increase resistance (welds, paint, rust, etc.) and is thus a poor ground.