Jump Start Connection Error

[Roguehog]

quick query folks.

 

connected the jump start cables incorrectly yesterday while helping a friend jump start his car.

 

instead of grounding the cable at the target, we grounded it at the source. his car (the target) started successfully. but wondering if there'll be any problems with my ride cos of the connection error.

 

pls advise.

[Poortraveller]

dun understand ... ur bat +ve go to his +ve, -ve go to -ve ... where got ground?

[Roguehog]

ok, this is what happened.

 

his +ve connects to my +ve but his -Ve connects to my grounding cable! and I'm the source!

[Poortraveller]

ground cable will go to ur -ve on ur bat ... so no problem

[Roguehog]

ok thx. but i thought supposed to connect my -ve to his ground cable?

[Elfenstar]

it still shouldnt matter as long as the neg cables are grounded from your battery. All our neg terminals are grounded to the cars chassis anyway.

 

Take the R33 and R34 skylines (batt is in the boot but with connection points in the engine bay)for example, if you want to jump start to or from them, the positive goes to the positive in both cars, and the negative can either go to the chassis in the other car or the neg batt terminal while the "neg" terminal in the skyline is just a bracket thats bolted to the chassis.

[Fortress]

Hi, said this previously on the below mentioned post.

 

http://www.mycarforum.com/forum/gforum.cgi...battery;#990492

 

Ivan

[Fortress]

You are right for vehicle jump starting similar size battery. Did this write up a while ago...

 

http://www.mycarforum.com/forum/gforum.cgi...battery;#990492

[Poortraveller]

bro, the cable size oso play a part in jump start the car rite? heard from my mechanics that usually those small cheapo cable will have problem jump start the car, will be better if use those thick cable.

 

better flow of electron??

[Fortress]

I guess it is a yes and no. Good cables will be made up of numerous smaller cable which will have better current and efficiency flow, hence preventing it from melting easily. Like you rightly said so, it is the make up of the cable. However, the size or diameter is also important as it allows the higher current flow, in most continental cars, which uses 55AH and above (instead of 45AH and above for Japanese). Thus, never get a similar size Japanese car to help jump start.

[Poortraveller]

but i did jump start my company van b4 leh ... both oso 45AH battery

[Fortress]

Good for you. It is probably the same AH.

[Stary]

ok thx. but i thought supposed to connect my -ve to his ground cable?

 

doesn't matter la......his ground cable is also his -ve. His -ve to your -ve. Your -ve is also your ground.

 

So doesn't matter whose ground la.