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Question

When removing the battery from a negative earth return system vehicle, disconnect


A.

grounded terminal cable first

B.

positive terminal cable first

C.

both terminal cables together

D.

ignition coil terminal cable first

Answer ( Option A)

grounded terminal cable first

Solution

  • Because, negative terminal of the battery is grounded to the body of the vehicle.
  • If positive terminal is removed first then chances of a spark are more if this terminal touches the body through the metal spanner or wrench you are opening with is grounded accidentally and may end in flames because lot of combustible material is around. And chances of this accidental touch are very high.
  • Be at safer side by removing the negative first which 
    • grounded to the body of the vehicle

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