HOW TO JUMP START A CAR
1) RED CLAMP TO POSITIVE (+) TERMINAL OF DEAD BATTERY.
2) OTHER RED CLAMP TO POSITIVE (+) TERMINAL OF LIVE (GOOD) BATTERY.
3) BLACK CLAMP TO NEGATIVE (-) TERMINAL OF GOOD BATTERY.
4) OTHER BLACK CLAMP TO CAR BODY.
5) START CAR WITH GOOD BATTERY THEN CAR WITH DEAD BATTERY.
Connecting the negative cable to the car body helps prevent sparks near the dead battery. If the dead battery is damaged or leaking gas (which can happen with lead-acid batteries), any spark could ignite the gas, leading to an explosion.
The car body is a good ground reference point, and it provides a solid electrical connection. This helps ensure that the jump-starting process is effective and that the electrical system can handle the load.
If you connect directly to the negative terminal of the dead battery, there is a risk of accidental short-circuiting, especially if the battery terminals are corroded or if there are loose connections. By connecting to the car body, you minimize this risk.
Connecting to the body allows for a more efficient flow of current. Since the car body is typically a large conductor of electricity, it can help in distributing the current more evenly.
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