Disconnecting Battery - wow! big spark
Hi all, dh put our fiver in storage for a little while and disconnect the battery. There was big spark signifying quite some power still running in the rig even tho everything was turned off! His...
Forum Discussion
Duck wrote:
I have been told several times by people who have been in the battery-auto-marine electrical business for years that you should always disconnect the negative terminal first when removing a battery.
Don
There are good reasons for doing that but not because the positive terminal will not spark.
With the negative connected and the positive disconnected any metal part of the car will spark if accidentally connected (say by a wrench) to the positive terminal. With the negative disconnected the only accidental short is to directly contact the two terminals.
