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#11
posted to rec.boats.cruising
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Anything wrong with this battery wiring setup?
Larry,
If you email me a jpg of a schematic, I'll put it on my sever and post a link. -- Roger Long |
#12
posted to rec.boats.cruising
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Anything wrong with this battery wiring setup?
Roger Long wrote:
It's a lot of work to produce a schematic that way. Scanners and digital cameras are so common now that posting a jpg of hand sketch would be much easier and clearer but newsgroup rules prohibit posting of images. If you have a web site or friend with one, you could upload the image to the server and post the link here as I do often. You need better, or clearer, advice than you'll get here though. Try and find a mechanic who knows boat systems. I would recommend a dual output battery charger. It will make everything much simpler. In that scenario where does the alternator go? Stephen |
#13
posted to rec.boats.cruising
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Anything wrong with this battery wiring setup?
"Stephen Trapani" wrote in message ... Roger Long wrote: It's a lot of work to produce a schematic that way. Scanners and digital cameras are so common now that posting a jpg of hand sketch would be much easier and clearer but newsgroup rules prohibit posting of images. If you have a web site or friend with one, you could upload the image to the server and post the link here as I do often. You need better, or clearer, advice than you'll get here though. Try and find a mechanic who knows boat systems. I would recommend a dual output battery charger. It will make everything much simpler. In that scenario where does the alternator go? Stephen Myself, I use a dual output battery charger for charging both banks. There are several brands out there depending on the size of your pocketbook. For charging while the motor is running, you can use a device such as this: http://www.yandina.com/c100Info.htm Leanne - W1WXS s/v Fundy |
#14
posted to rec.boats.cruising
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Anything wrong with this battery wiring setup?
Larry wrote:
Stephen Trapani wrote in news:snwki.452 : So I hook the alternator and AC charger to the common terminal of the big battery switch, ditch the extra wire the PO had coming off of each, and I have terminal 1 on the big battery switch go to the starter battery and 2 terminal go to the house battery. Is that right? There is a problem hooking it up this way. If you EVER screw up and plug in the charger with that switch in the OFF position, the full open circuit voltage of the battery charger, somewhere around 20-25 pulsating VDC, will be applied to everything connected to the COMMON side of the switch....without the battery regulating the maximum voltage of it. This will blow every electronic gadget hooked to it on a live circuit....EVEN IF IT IS NOT TURNED ON! Electronic gadgets use electronic switching, not real power switches, those push button on gadgets. It will destroy them So call me crazy (and cheap!), but could I let a dab of 5200 harden on the switch so it can't be turned to off? Would everything be safe then? Thanks everyone for the help!! Stephen |
#15
posted to rec.boats.cruising
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Anything wrong with this battery wiring setup?
Stephen Trapani wrote in news:%JRki.613$n_
: So call me crazy (and cheap!), but could I let a dab of 5200 harden on the switch so it can't be turned to off? Would everything be safe then? Thanks everyone for the help!! Stephen No. The reason for the switch is to make the boat "safer" during periods of disuse or storage (misuse??). You can do the same thing by disconnecting a battery post. Hook the house to the house battery. Hook the starter to the starting battery. Put this switch in between the + terminals with battery jumper wires: http://tinyurl.com/2qbjp7 $25 plus the cables. You can switch it on or off any ol' time you like, even with the engine running. All it does is act like a jumper cable jumpering one battery + terminal to the other, letting the alternator connected to the starting battery charge both house and starting in parallel. No matter where the switch is positioned, house stuff is always connected to the house battery and starting stuff is always connected to the starting battery. The reason to use heavy wire with so heavy a switch is the "jumper cable effect", allowing you to switch it on to crank the beast from the house batteries....unless, of course, they are dead. The contactors I previously posted do just what this switch will do....but will NOT let you go off for a couple of months leaving the batteries paralleled, killing them all in the process. You can eliminate the A-B-Both-OFF switches if you like. That also keeps the wife from switching the house to the starting battery when the lights start to go dim and you're not watching her....(c; Larry -- While in Mexico, I didn't have to press 1 for Spanish. While in Iran, I didn't have to press 1 for Farsi, either. It just isn't fair. |
#16
posted to rec.boats.cruising
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Anything wrong with this battery wiring setup?
On Tue, 10 Jul 2007 02:34:01 +0000, Larry wrote:
Stephen Trapani wrote in news:snwki.452 : So I hook the alternator and AC charger to the common terminal of the big battery switch, ditch the extra wire the PO had coming off of each, and I have terminal 1 on the big battery switch go to the starter battery and 2 terminal go to the house battery. Is that right? There is a problem hooking it up this way. If you EVER screw up and plug in the charger with that switch in the OFF position, the full open circuit voltage of the battery charger, somewhere around 20-25 pulsating VDC, will be applied to everything connected to the COMMON side of the switch....without the battery regulating the maximum voltage of it. This will blow every electronic gadget hooked to it on a live circuit....EVEN IF IT IS NOT TURNED ON! Electronic gadgets use electronic switching, not real power switches, those push button on gadgets. It will destroy them So, I don't advocate doing it. I advocate using an isolator for both. The diode isolators are fine. Connect the alternator to one and the charger to another...SEPARATELY... There are 3 terminals....BATTERY 1, BATTERY 2, SOURCE (the alternator on one and the charger on the other). This will CHARGE both batteries from whatever charging source is running, even both, WITHOUT inadvertently parallelling the batteries because one of the diodes will be reversed biased when one battery tries to load the other when running on batteries. The other way to do it is with continuous-duty 12VDC and 115VAC contactors available from auto parts places more cheaply. These look just like a starter relay, except they have coils made for continuous duty (always on). Larry, I thought I sent this a day, or so, ago but it never turned up on the web so I'm re-sending it. Re these 12 VDC continuous duty contractors available from the auto parts with the capacity to carry starting amperage. Can you elaborate a bit as I could sure use some of these to wire my power up/down anchor winch. Much bunch snipped. Larry Bruce in Bangkok (brucepaigeatgmaildotcom) -- Posted via a free Usenet account from http://www.teranews.com |
#17
posted to rec.boats.cruising
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Anything wrong with this battery wiring setup?
Bruce wrote in
news Re these 12 VDC continuous duty contractors available from the auto parts with the capacity to carry starting amperage. Can you elaborate a bit as I could sure use some of these to wire my power up/down anchor winch. You don't need continuous duty for anchor winch contactors. Any 12V starter solenoid will work just fine. Last time I looked, Ford was still using them on their cars...(c; That should make them really cheap. The only difference between a 350A starting solenoid and a 350A continuous-duty solenoid is how the coil is wound...and cooled. Both of them will crank a diesel from the house batteries. The starting solenoid will overheat after about 30-40 minutes of being "on". The continuous duty coil is larger with better cooling, costs a little more to produce. I'm using a 200A, continuous-duty solenoid to power the entire electronic suite bus on Liohheart. It draws about 1/4A to power its coil, which is left on for days at a time at sea. A red light over its power switch lights up the cabin at night and reminds my captain to shut off the electronics throughout Lionheart when he goes home. Only the emergency VHF (an Icom M59) and the Icom M802 HF radio are separately wired. Push the "electronics power knob" in and the boat shuts down, en masse. Works great. You won't overhead starter solenoid coils running the winches up and down..... Larry -- While in Mexico, I didn't have to press 1 for Spanish. While in Iran, I didn't have to press 1 for Farsi, either. It just isn't fair. |
#18
posted to rec.boats.cruising
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Anything wrong with this battery wiring setup?
Bruce wrote in
news Re these 12 VDC continuous duty contractors available from the auto parts with the capacity to carry starting amperage. Can you elaborate a bit as I could sure use some of these.. They look just like regular starter solenoid relays except the coil is larger, draws less amperage to pull in the plunger and have better internal heat sinking. Starter solenoids use more current because they are built so cheaply with lots less windings. These solenoids may also be found in car stereo stores as they use them for switching the beast power amps the kiddies have in their trunks. Many are used to power those driving headlights with the big quartz bulbs, too. http://www.stancor.com/jsp/relays.jsp I'm using the Type 70 Stancor continuous duty. It's rated at 80A continuous and 400A "inrush", like a stalled starter would draw. Both the battery contactors and electronics power contactor are all these cheap relays, all sealed up to keep the sea air at bay.... Any little toggle switch (1A) can control large currents remotely with these cheap contactors. They are sealed, so provide an explosion-proof solution to switching battery bank monsters in the bilge. They do draw power for this convenience....about what a cabin light draws...1/2 to 1A off the batteries, unlike a big switch at no drain, so you must disable them at storage time. Larry -- While in Mexico, I didn't have to press 1 for Spanish. While in Iran, I didn't have to press 1 for Farsi, either. It just isn't fair. |
#19
posted to rec.boats.cruising
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Anything wrong with this battery wiring setup?
On Wed, 11 Jul 2007 16:23:20 +0000, Larry wrote:
Bruce wrote in news Re these 12 VDC continuous duty contractors available from the auto parts with the capacity to carry starting amperage. Can you elaborate a bit as I could sure use some of these to wire my power up/down anchor winch. You don't need continuous duty for anchor winch contactors. Any 12V starter solenoid will work just fine. Last time I looked, Ford was still using them on their cars...(c; That should make them really cheap. The only difference between a 350A starting solenoid and a 350A continuous-duty solenoid is how the coil is wound...and cooled. Both of them will crank a diesel from the house batteries. The starting solenoid will overheat after about 30-40 minutes of being "on". The continuous duty coil is larger with better cooling, costs a little more to produce. I'm using a 200A, continuous-duty solenoid to power the entire electronic suite bus on Liohheart. It draws about 1/4A to power its coil, which is left on for days at a time at sea. A red light over its power switch lights up the cabin at night and reminds my captain to shut off the electronics throughout Lionheart when he goes home. Only the emergency VHF (an Icom M59) and the Icom M802 HF radio are separately wired. Push the "electronics power knob" in and the boat shuts down, en masse. Works great. You won't overhead starter solenoid coils running the winches up and down..... Larry Larry, I'm not trying to start an argument, I'm trying to gain knowledge. In a previous post you referred to continuous duty 12 V DC relays/solonoids as being cheaper in the auto shop. In the context you used the term I thought you were referring to high amperage, continuous duty devices and I wanted some. I did mention the anchor winch (which I know doesn't need continuous duty switches) but I also want them to power other systems as well, paralleling battery banks, etc. If you can buy high amperage, continuous duty 12 VDC relays in the auto shop please tell me what they are so I can get 'em too. .. Bruce in Bangkok (brucepaigeatgmaildotcom) -- Posted via a free Usenet account from http://www.teranews.com |
#20
posted to rec.boats.cruising
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Anything wrong with this battery wiring setup?
On Wed, 11 Jul 2007 16:48:20 +0000, Larry wrote:
Bruce wrote in news Re these 12 VDC continuous duty contractors available from the auto parts with the capacity to carry starting amperage. Can you elaborate a bit as I could sure use some of these.. They look just like regular starter solenoid relays except the coil is larger, draws less amperage to pull in the plunger and have better internal heat sinking. Starter solenoids use more current because they are built so cheaply with lots less windings. These solenoids may also be found in car stereo stores as they use them for switching the beast power amps the kiddies have in their trunks. Many are used to power those driving headlights with the big quartz bulbs, too. http://www.stancor.com/jsp/relays.jsp I'm using the Type 70 Stancor continuous duty. It's rated at 80A continuous and 400A "inrush", like a stalled starter would draw. Both the battery contactors and electronics power contactor are all these cheap relays, all sealed up to keep the sea air at bay.... Any little toggle switch (1A) can control large currents remotely with these cheap contactors. They are sealed, so provide an explosion-proof solution to switching battery bank monsters in the bilge. They do draw power for this convenience....about what a cabin light draws...1/2 to 1A off the batteries, unlike a big switch at no drain, so you must disable them at storage time. Larry I also answered another, much shorter, post with a plea for more information which you have included in this post. Thanks for the info as I am in the process of rewiring a 35 ft. power boat and wanted to use relays for stitching with remote control switches and was having trouble finding reasonably priced continuous duty contactors. Bruce in Bangkok (brucepaigeatgmaildotcom) -- Posted via a free Usenet account from http://www.teranews.com |
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