Grounding wire attached to exhaust

[johnguti]

Can someone tell me what is the grounding wire attached to the rear right side of the exhaust for? My 08 Path S, came with it but after a few months it just fell probably due to being loose

[cruzstyle]

ive been told it helps prevent rust by sending a small electrical charge through the metal to prevent teh rust from forming. i have also been told it has something to do with emissions. not sure if either of those are true jsut things that i have heard

[johnguti]

Thanks for your information, but talking to some Nissan mechanics they told me that this piece of metal wire is for safety purposes. For example, just in case there is a major collision and the Pathy would roll over, the electricity would go to ground instantly preventing a short circuit and therefore fire of the vehicle.