|
|
|
|
| Author |
|
|
Registered
Join Date: Dec 2000
Location: St. Louis, USA
Posts: 129
|
Battery Saver Question
Bought a battery saver (Disconnect) from our host in an attempt to prolong the life of the new Optima battery.
Instructions say to connect the device to the negative terminal connection. Could it go in the positive as well?? Just curious as to the benefits of fitting it to the negative.
__________________
78 3.2L CIS 911SC |
||
12-10-2002, 03:50 PM
|
|
|
Registered
Join Date: Apr 2001
Location: Linn County, Oregon
Posts: 48,526
|
Huh? I'm puzzled here. Only one connection to this unit? I hope Wayne weighs in..
|
||
|
12-10-2002, 04:07 PM
|
|
|
Registered
Join Date: Dec 2000
Location: St. Louis, USA
Posts: 129
|
No, the device goes in series with the negative lead, however it basically becomes a switch which will break the negative connection to ground (when disconnected). My question is why not break the positive rather than the negative???
__________________
78 3.2L CIS 911SC |
||
|
12-10-2002, 04:52 PM
|
|
|
Registered
|
+/-
i imagine it is because of safety. if the ground is completely disconnected then no power can flow. if you have it to positive you can still in-advertently hit the positive side of the batter to the negative of a ground or the body and get a spark. that wont happen if you short out to the ground to the body
__________________
1975 911S Targa Silver Anniversary Edition |
||
|
12-10-2002, 07:27 PM
|
|
|
Registered
Join Date: Jul 2001
Location: Springfield, MO
Posts: 1,422
|
I think 47Silver ment opening the circuit to ground.
It's just the safe thing to do. Whenever you are working on the electrical circuits and want to stop the current flow, just interupt the ground side. It rarely sparks. Just my observation. Good luck, David Duffield |
||
|
12-10-2002, 07:46 PM
|
|
|
Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
|
I might add that the cutoff switch capacity can be smaller (less current carrying capacity) if placed on the ground side of the battery. Same reason why many automotive electrical circuits are designed with the switch on the ground side of the load. There is less voltage potential which creates less arcing (wear and tear) when the switch contacts separate.
Sherwood Lee http://members.rennlist.org/911pcars |
||
|
12-10-2002, 10:21 PM
|
|
|
