08-04-2020, 11:06 AM
Hi
sorry I think I made a mistake there. It does seem that on a negative earth car the mechanical isolator is in fact put on the negative terminal.
I think it probably follows the correct battery removal procedure - a neg earth car when removing a battery always remove the negative terminal first.
With the isolator I presume it is fitted on the earth side because if you need to isolate the battery and you are having difficulty (device gummed up stuck) and you need to use metal tools on it shorting the neg terminal to earth would have no effect. If the isolator was on the positive and it was stuck then obviously there would be the chance of even more problems.
sorry I think I made a mistake there. It does seem that on a negative earth car the mechanical isolator is in fact put on the negative terminal.
I think it probably follows the correct battery removal procedure - a neg earth car when removing a battery always remove the negative terminal first.
With the isolator I presume it is fitted on the earth side because if you need to isolate the battery and you are having difficulty (device gummed up stuck) and you need to use metal tools on it shorting the neg terminal to earth would have no effect. If the isolator was on the positive and it was stuck then obviously there would be the chance of even more problems.