Class Discussion Item 2.1

Proper Car Jump Start

Schematic of a Proper Car Jump

Proper Cable Connection Attach red cable to

positive post of the good and dead battery

Attach black cable

to Negative post of running car

Proper Cable Connection Do not attach

remaining black cable to negative post of dead car

Instead:Attach to a clean,

unpainted spot on the engine or frame away from the dead battery

Why This Works Manufactures wire the frame and

engine directly to to negative terminal

Thus, completing the electric circuit

Why?

Recharging causes water in the dead battery to split into Hydrogen and Oxygen

2H20(l)

2H2(g) + 02(g)

Removing the Cables

In reverse order: Negative cable from engine Negative cable from good battery Positive cable from dead battery Positive cable from good battery

Safety

Make sure cars are not touching Never allow jumper cable claps to

touch while any clamps are attached to battery

Keep engine in good car running Be sure to connect Positive to

Positive and Vice versa