24->12 inverter wiring
24->12 inverter wiring
I've searched and searched on here to find a how-to for hooking up an inverter. Can anyone point me to the thread? Can't imagine it hasn't been covered...
Barry
Springfield, MO
1975 710M
1974 Land Rover Series III (yeah, yeah, I know)
2008 BMW R1200GSA
Springfield, MO
1975 710M
1974 Land Rover Series III (yeah, yeah, I know)
2008 BMW R1200GSA
Re: 24->12 inverter wiring
The wiring is usually brand/model specific and is best obtained from the manufacturer. For instance, some models are ground isolated while others are not and each would need a different method of grounding for proper operation.
Here's a wiring diagram from a SurePower unit:
Here's a wiring diagram from a SurePower unit:
Last edited by pcolette on Wed Jul 31, 2013 2:31 am, edited 1 time in total.
Paul C.
_________
'73 Swiss 710M
'89 Puch 230GE
_________
'73 Swiss 710M
'89 Puch 230GE
- TechMOGogy
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Re: 24->12 inverter wiring
Hmmm more to it than I thought as well
I thought it was simple 24v in plus a ground and then you have 12v out plus a ground
I thought it was simple 24v in plus a ground and then you have 12v out plus a ground
72 Pathfinder | 75 710M 2.7i | 96 350GDT Worker
Re: 24->12 inverter wiring
Inverter is usually changing AC to DC...I think you mean converter to change 24 to 12, yes?
Any man who thinks he can be happy and prosperous by letting the government take care of him:
better take a closer look at the American Indian.---Henry Ford
better take a closer look at the American Indian.---Henry Ford
- Jimm391730
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Re: 24->12 inverter wiring
That is exactly what is shown in figure 2. Don't be confused by the alternator and individual batteries that are shown, just notice that the converter has a single ground, 24V input, and 12V output (the 12V ground is shared with the 24V ground in this case).Hmmm more to it than I thought as well. I thought it was simple 24v in plus a ground and then you have 12v out plus a ground
Jim M.
712W and 710M
712W and 710M
Re: 24->12 inverter wiring
Exactly.krick3tt wrote:Inverter is usually changing AC to DC...I think you mean converter to change 24 to 12, yes?
Barry
Springfield, MO
1975 710M
1974 Land Rover Series III (yeah, yeah, I know)
2008 BMW R1200GSA
Springfield, MO
1975 710M
1974 Land Rover Series III (yeah, yeah, I know)
2008 BMW R1200GSA
- audiocontr
- Posts: 1868
- Joined: Fri May 01, 2009 1:30 pm
- Location: Buffalo NY
Re: 24->12 inverter wiring
Would recommend against those instructions! Ground to the chassis, NOT the battery.
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
Re: 24->12 inverter wiring
Agree these instructions do not take the Pinzgauers ground interrupt switch / system. This system is also usually defeated (potentially a bad thing) with most winch installations on a Pinzgauer.audiocontr wrote:Would recommend against those instructions! Ground to the chassis, NOT the battery.
Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.
- Jimm391730
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- Jimm391730
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Re: 24->12 inverter wiring
We're all saying the same thing:who to believe??
Shown in Figure 2. And note that the CAUTION warning (which we do NOT want to apply) does have an exception for figure 2. But for our trucks, it is generally considered best to NOT use the wiring as shown in figures 1, 3, or 4 (with a few rare exceptions, depending on the converter and what you are trying to do with it)....Ground to the chassis, NOT the battery.
The biggest problem can arise with figures 1 and 4, with the battery negative disconnect switch open -- connecting 24V loads with the switch open will reverse the polarity of the 12V output, often frying the 12V devices... it's not easy to describe why this happens through text, just know that there are a few Pinz owners who have found out the hard way (fortunately, I'm not one of them!). This won't happen if the converter is grounded to chassis and not directly to the battery negative.
Jim M.
712W and 710M
712W and 710M
Re: 24->12 inverter wiring
I have 2 of the SurePower units that they made for John Deere construction equipment and am pleased with them. I mounted the units on the bulkhead behind the driver's seat and (as Jim M. said) connected the ground on the converter to the chassis ground side of the battery cutoff switch, not to the battery negative terminal. I also installed an illuminated red rocker switch in the 24V lead to the converter so I can be sure it is off.
Paul C.
_________
'73 Swiss 710M
'89 Puch 230GE
_________
'73 Swiss 710M
'89 Puch 230GE
Re: 24->12 inverter wiring
One on eBay right now...pcolette wrote:I have 2 of the SurePower units that they made for John Deere construction equipment and am pleased with them. I mounted the units on the bulkhead behind the driver's seat and (as Jim M. said) connected the ground on the converter to the chassis ground side of the battery cutoff switch, not to the battery negative terminal. I also installed an illuminated red rocker switch in the 24V lead to the converter so I can be sure it is off.
http://www.ebay.com/itm/John-Deere-AT14 ... 27d5ac0fad
Ottawa, Canada
1974 710M
2007 2WD Ural Patrol
1974 710M
2007 2WD Ural Patrol
Re: 24->12 inverter wiring
So now I'm wondering if the battery equalizer (not wired as converter) needs to be on the chassis side of the battery master switch "relay" as opposed to the chassis side of the battery master switch? I'm using the SurePower 52208.
'76 710K
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Re: 24->12 inverter wiring
Stekay,
Regarding EQUALIZERs:
To my knowledge, they battery equalizer goes at the batteries, not "inboard" of the master switch.
I had one, but occasionally still had one battery die. I was always under the impression that the equalizer merely drained off the higher charged battery to equalize it with the lower charged one. I eventually removed the equalizer from the truck.
But I had an idea you might consider. On my equalizer, the directions stated to connect the ground last to avoid damage to the equalizer. I thought to connect this ground via a 24 v relay which would be turned on by the master switch. That way, once the master switch is "on", then the ground for the equalizer would be made via the relay thus equalizing the batteries only when the truck is powered up. The equalizer would not be active when the master switch is off, thus no residual drain on either battery.
TechMOGogy,
I place my faith in Jimm391730's electrical knowledge over that of most of us.
Regarding EQUALIZERs:
To my knowledge, they battery equalizer goes at the batteries, not "inboard" of the master switch.
I had one, but occasionally still had one battery die. I was always under the impression that the equalizer merely drained off the higher charged battery to equalize it with the lower charged one. I eventually removed the equalizer from the truck.
But I had an idea you might consider. On my equalizer, the directions stated to connect the ground last to avoid damage to the equalizer. I thought to connect this ground via a 24 v relay which would be turned on by the master switch. That way, once the master switch is "on", then the ground for the equalizer would be made via the relay thus equalizing the batteries only when the truck is powered up. The equalizer would not be active when the master switch is off, thus no residual drain on either battery.
TechMOGogy,
I place my faith in Jimm391730's electrical knowledge over that of most of us.