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When removing the battery cables which one should be removed first?
When disconnecting the cables from the old battery, disconnect the negative first, then the positive. Connect the new battery in the reverse order, positive then negative.”
Why do you disconnect the negative battery cable?
The negative battery terminal is your ground, which keeps you from getting shocked when working on the engines, the electrical, and the fuel parts of your car. Disconnecting this terminal is a safety precaution that will help keep you from feeling the full power that surges through your car.
Why do we need to always disconnect the ground cable first and identify the cable as positive and negative?
You are supposed to remove the ground cable first so you do not accidentally short the battery to ground. Doing so creates a spark right next to the battery which can cause a gas explosion. On modern cars this is the negative cable that is grounded but on many older cars it was the positive cable.
Why do you remove the negative cable first?
Negative first It’s important to disconnect the negative side of the battery first, otherwise you can cause an electrical short if the positive is removed first.
What happens if you disconnect the negative cable?
This can cause significant sparking and damage to the battery. However if you disconnect the negative and accidentally touch a spanner between the negative terminal and the chassis then all you will do is complete the circuit as it is designed to operate and because it under load the sparking is minimal.
Can You disconnect the negative terminal first?
It is possible to disconnect either terminal first and be fine, it’s just not recommended, and here’s why: A car battery’s negative terminal has a cable that runs from it to the frame of the vehicle. This causes the entire frame to act as the negative terminal of the battery.
Can a negative cable be removed from a car battery?
If you ask experts what is the most important detail you should remember about how to remove car battery parts, they’ll tell you that the negative cable has to be removed first. This is true because disconnecting the positive cable with the negative one still connected can easily cause a serious electric arc that may even be life-threatening.
Why is the negative terminal of a battery removed first?
However, from a safety standpoint it is better to remove the negative cable. This is because the chassis of the car is connected to the negative cable. If you started removing the positive cable instead, your wrench could hit the chassis and cause a short (because the chassis is connected to the battery’s negative terminal).
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