Home » Public Forums » GMCnet » Battery Cutoff switch
Re: Battery Cutoff switch [message #356602 is a reply to message #356474] |
Thu, 09 July 2020 19:40 |
SpookyEng
Messages: 208 Registered: June 2016 Location: Navarre, FL
Karma: -5
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tgeiger wrote on Mon, 06 July 2020 23:37Since I’m getting back into all the battery and grounding issues on my coach was also wanting to install a battery cut off switch for my storage of it. Any suggestions on how and where. Seemed like I remember up by the isolator, just don’t recall which cable I interrupt there?
Thanks,
Tom
76 Eleganza 2
Kansas City, Mo
http://www.gmccoop.com/the-🏁-co-op-and-the-beat-goes-on/
Check this post, it has a good picture of cutoff switch mounting.
JD Lisenby- USAF Ret
1978 Royale-455
MacDash, Manny Tranny, FI-tech, 3.70 etc etc
Navarre, FL
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Re: Battery Cutoff switch [message #356612 is a reply to message #356474] |
Fri, 10 July 2020 04:53 |
tgeiger
Messages: 518 Registered: February 2006 Location: kansas city
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Looks good. My arrangement of relay’s and solenoids looks a bit different but I can see how its put together. Like I’ve said before, not super whippy with electrical stuff. I do have a question on the placement of the cutoff switches. I like this arrangement from the aspect of shutting everything down from one spot, especially if there was a emergency. I’ve read some guys want to have these nearest to the battery, why would that be? My house battery is back by the generator.
Thanks,
TG
Tom Geiger
76 Eleganza II
KCMO
[Updated on: Fri, 10 July 2020 04:55] Report message to a moderator
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Re: Battery Cutoff switch [message #356617 is a reply to message #356474] |
Fri, 10 July 2020 07:51 |
jhbridges
Messages: 8412 Registered: May 2011 Location: Braselton ga
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Given the number of heathen chinee parts showing up these days, I'd suggest having a look at your disconnect switch with a temp gun during or immediately after cranking. Any increased temp would be reason to suspect the integrity of the switch.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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Re: Battery Cutoff switch [message #356628 is a reply to message #356474] |
Fri, 10 July 2020 14:15 |
jhbridges
Messages: 8412 Registered: May 2011 Location: Braselton ga
Karma: -74
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As I said earlier, different desires get different solutions. The daughter's car drops on the order of three millivolts across the knife switch. Likely a minor bit more for the 455 starter, In that it's not engaged for any great length of time, and in that it's inspected on the contacts regularly, I'll keep it on the negative battery terminal. Otherwise, the system isn't cold when the switch is open, there are/is energized wire. Worse'n that, the energized wire is heavy enough that the inadvertent screwdriver is likely to blow the battery up. None fer me, thanks when I propped the spray plane, "Make it COLD" got "Switch Off" and still pulled it through one handed so I could let go if there as something for the impulser to light. "Make it HOT" got "Contact" and I knew it was gonna run.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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Re: Battery Cutoff switch [message #356633 is a reply to message #356617] |
Fri, 10 July 2020 15:31 |
Ken Burton
Messages: 10030 Registered: January 2004 Location: Hebron, Indiana
Karma: 10
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My starter has run through a cutoff switch for 15 years. It is kind of hard to isolate the battery if you do not run everything through the switch.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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Re: [GMCnet] Battery Cutoff switch [message #356649 is a reply to message #356475] |
Fri, 10 July 2020 22:21 |
James Hupy
Messages: 6806 Registered: May 2010
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That is the point of a disconnect. To remove all chance of accidental
connection with the + post of the battery (s). The positive side is the
correct side to interrupt. If it is open, there is no chance of accidental
shorting to ground (-).
Jim Hupy
Salem, Oregon
On Fri, Jul 10, 2020, 8:07 PM Emery Stora via Gmclist <
gmclist@list.gmcnet.org> wrote:
> My starter has run through a knife switch for over 20 years with no
> problem.
>
> Emery Stora
> 77 Kingsley
> Frederick, CO
>
>> On Jul 10, 2020, at 2:31 PM, Ken Burton via Gmclist gmclist@list.gmcnet.org> wrote:
>>
>> My starter has run through a cutoff switch for 15 years. It is kind of
> hard to isolate the battery if you do not run everything through the
> switch.
>> --
>> Ken Burton - N9KB
>> 76 Palm Beach
>> Hebron, Indiana
>>
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Re: Battery Cutoff switch [message #356650 is a reply to message #356612] |
Fri, 10 July 2020 22:39 |
SpookyEng
Messages: 208 Registered: June 2016 Location: Navarre, FL
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tgeiger wrote on Fri, 10 July 2020 04:53Looks good. My arrangement of relay’s and solenoids looks a bit different but I can see how its put together. Like I’ve said before, not super whippy with electrical stuff. I do have a question on the placement of the cutoff switches. I like this arrangement from the aspect of shutting everything down from one spot, especially if there was a emergency. I’ve read some guys want to have these nearest to the battery, why would that be? My house battery is back by the generator.
Thanks,
TG
I also have a cutout switch in the generator compartment for the house batteries. You want it nearest the battery so the most amount of wiring is after the switch.
JD Lisenby- USAF Ret
1978 Royale-455
MacDash, Manny Tranny, FI-tech, 3.70 etc etc
Navarre, FL
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Re: [GMCnet] Battery Cutoff switch [message #356662 is a reply to message #356655] |
Sat, 11 July 2020 11:46 |
tphipps
Messages: 3005 Registered: August 2004 Location: Spanish Fort, AL
Karma: 9
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I use one of the battery mounted knife switches on my toad - Honda Fit. Keeps the battery from going flat while under tow. Only minor item - the radio code must be re-entered after reconnecting the switch, and the clock time reset.
My toad lights are driven by the RV's 12v system.
Tom
2012 Phoenix Cruiser model 2552
KA4CSG
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Re: [GMCnet] Battery Cutoff switch [message #356681 is a reply to message #356623] |
Sat, 11 July 2020 20:50 |
Rick Staples
Messages: 126 Registered: May 2014 Location: Johnstown, Colorado, USA
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Just FYI, that little cutoff switch Amazon is selling (and I just ordered) is rated for "275 Amps continuous, 455 Amps intermittent, and 1,250 Amps momentary". That should get it done, IMHO. OTOH, I'm still deciding how I'll wire up mine.
Rick Staples
Rick Staples, '75 Eleganza, Johnstown, CO
"Advice is a dangerous gift, even from the Wise to the Wise, and all paths may run ill." -Tolkien
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Re: [GMCnet] Battery Cutoff switch [message #356686 is a reply to message #356681] |
Sat, 11 July 2020 22:10 |
k2gkk
Messages: 4452 Registered: November 2009
Karma: -8
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I had no idea. that those "little" switches had such capabilities!
Mac. in OKC, OK
Sent from my iPad
> On Jul 11, 2020, at 20:50, Richard H Staples via Gmclist wrote:
>
> Just FYI, that little cutoff switch Amazon is selling (and I just ordered) is rated for "275 Amps continuous, 455 Amps intermittent, and 1,250 Amps
> momentary". That should get it done, IMHO. OTOH, I'm still deciding how I'll wire up mine.
>
> Rick Staples
>
> --
> Rick Staples, '75 Eleganza, Johnstown, CO
>
> "Advice is a dangerous gift, even from the Wise to the Wise, and all paths may run ill." -Tolkien
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Re: Battery Cutoff switch [message #356693 is a reply to message #356474] |
Sun, 12 July 2020 07:21 |
jhbridges
Messages: 8412 Registered: May 2011 Location: Braselton ga
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Quick n dirty lights pon the toad - my Soul has huge tail light assemblies, so I drilled a hole and added a stop - turn - tail bulb to each. Tow electrics are completely separate.
As to battery cutoff switches, if the switch is post mounted, opening either one gives the same result. You'd have to short the post to get any current flow.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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Re: Battery Cutoff switch [message #356731 is a reply to message #356602] |
Mon, 13 July 2020 15:10 |
tgeiger
Messages: 518 Registered: February 2006 Location: kansas city
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Ok, so got the starting problem fixed. I believe it was a grounding issue. I went back thru and cleaned all the connection with either a brass wire brush or a brass wheel on my drill. Put it all back together with some lock washer with teeth. Seem to do the job, she cranked right up. This was out at my storage place so tomorrow I’ll bring it back over to the house and finish all the rest of the electrical clean up and items.
Thanks all for your help!
TG
Tom Geiger
76 Eleganza II
KCMO
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Re: Battery Cutoff switch [message #356732 is a reply to message #356731] |
Mon, 13 July 2020 15:42 |
Ken Burton
Messages: 10030 Registered: January 2004 Location: Hebron, Indiana
Karma: 10
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When it comes to those heavy 12 volt cables sometimes you just have to shotgun it and clean all of them. Occasionally is it the starter or solenoid contacts inside but usually it is the cable connections.
I am happy you fixed it and do not have to worry about them for a few years now.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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Re: Battery Cutoff switch [message #356738 is a reply to message #356474] |
Mon, 13 July 2020 17:18 |
tgeiger
Messages: 518 Registered: February 2006 Location: kansas city
Karma: -1
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I’m glad too. Thanks again for your help. Will finish out on the items you suggested when I get it over here at the house.
Thanks,
TG
Tom Geiger
76 Eleganza II
KCMO
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