batteries

[Pete Masterson]

Most systems (including Blue Birds) are set up with negative ground, so if you remove the negative cable, then the batteries are guaranteed to be isolated.

Presumably, if you disconnect the positive cable, you get the same result, but if the disconnection (by a switch, for example) isn't complete -- if something is 'tapped' before the switch -- then the disconnection is only partial.

If there is a short from a positive wire to the frame, with the negative disconnected, then there is no fire. So the negative is the 'safer' wire to disconnect. (Of course, if there's a short, you'll find it rather quickly after hooking the battery up, again.)

This is all reversed in a system with a positive ground.

Pete Masterson

(former) '95 Blue Bird Wanderlodge WBDA 42

El Sobrante CA

"aeonix1@mac.com"

On Nov 11, 2009, at 10:43 PM, gregory O wrote:

For some reason manuals often advise " disconnect the - negative" I can only assume that the negative has more paths and the positive is better insulated and safer to leave hooked up????
Greg
94ptca



--- In "WanderlodgeForum@yahoogroups.com", "mariopatti1" wrote:

Hi All

Leaving the BB for a few weeks in storage . I would like to protect the batteries from going dead . Should I disconnet the cables ?

I have 4 6v house and 2 6v engine .

Mario 1985FC35 SOCAL