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need help ACR Blue Sea 7600

Old 10-02-2006, 10:03 PM
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Default need help ACR Blue Sea 7600

I have purchased a Blue Sea ACR 7600. The instructions say "use/protect by a time-delay fuse 75A or larger or use a 150A thermal circuit breaker". I have a bay boat with the normal sonar, bait wells, VHF, etc. What do you suggest I use? I will have it connected to a start and house battery. That 150A circuit breaker sounds pretty big to me so I am asking you for advice. Thanks.
Old 10-02-2006, 10:30 PM
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Default RE: need help ACR Blue Sea 7600

That large fuse is for dead shorts. Like the type that can only happen from a serious short, fire, explosion, hooking up bat backwards... Don't worry, just stick to their reccommendations.....You'll be fine. Just remember, your individual buss fuses are what you really guard your equipment with. Like a 10amp for a VHF radio. Or a 10 amp for a bilge pump ...and so on.

Tom
Old 10-03-2006, 05:44 AM
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Default Re: need help ACR Blue Sea 7600

You will need 2. 1 between each battery & the ACR. I would use these:



http://www.bluesea.com/product.asp?P...7&l1=7407&l2=#



Old 10-03-2006, 08:18 AM
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Default RE: need help ACR Blue Sea 7600

Thanks, I ordered a 150 amp circuit breaker this morning.
Old 10-03-2006, 08:26 AM
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Default Re: need help ACR Blue Sea 7600

The recent install I did included 2- 150amp bulkhead mounted Blue Sea's circuit breaker's as shown above.



[img]http://img.photobucket.com/albums/v196/Warthog5/AdamsBoat002.jpg]/img]



Old 10-03-2006, 12:29 PM
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Default Re: need help ACR Blue Sea 7600

I have some pics that show another install in my folder below. Basically, I like the simplicity of straight fuses. If you never short your main battery cables, that main fuse will never go bad. I like circuit breakers (CB's), but, I just prefer big fuses. (I keep a couple of spares too) I figure that individual fuses for each item connected to the system just keeps things simple. BUT, the redundancy of CB's is a nice way to go too. I just prefer that a single shorted device will only blow an INDIVIDUAL device--not the entire group of items from an entire battery bank. By the way, I have two Orbital's. One for all electronics, the other for engine starts. Keeping them seperate is the only way to go when you want to avoid engine starting spikes---or irritating voltage drops---.

I mounted all my gear on Taco board. Super easy to work with. The item above the distribution pannel is a Guest two battery charger.

Tom

http://picasaweb.google.com/tmartin000/BoatPics

Old 10-03-2006, 01:39 PM
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Default Re: need help ACR Blue Sea 7600

The CB's actually are much easier for a couple of reason's.
Have you ever had to hunt down and change a fuse at night? Not fun!

The ACR also draws a few [millie amp's] when the boat is sitting on the trailer or not in service. After a long period of time it will draw the battries down.

One push of a button on each CB will stop this by tripping the breaker and opening the circuit. To do this with a fuse you have to remove the fuse.





Why is there automotive style crimp connector's in your install? They are not crip/shrink connector's. The wiring is now open to the element's of moisture in the air.
Other than that, your work is neat and clean.
Old 10-04-2006, 10:43 AM
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Default Re: need help ACR Blue Sea 7600

What you can't see is that they are all soldered. Crimped to hold on, soldered for corrosion protection. I like the plastic ends to grab onto...

Thanks for your kind words...

Tom
Old 10-04-2006, 11:38 AM
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Default Re: need help ACR Blue Sea 7600

warthog,

What can you tell me about that battery box?
Old 10-04-2006, 12:21 PM
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Default Re: need help ACR Blue Sea 7600

warthog5

Where did you purchase the battery switches? Thanks,
Old 10-04-2006, 10:20 PM
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Default Re: need help ACR Blue Sea 7600

warthog5 - 10/3/2006 2:39 AM

The CB's actually are much easier for a couple of reason's.
Have you ever had to hunt down and change a fuse at night? Not fun!

The ACR also draws a few [millie amp's] when the boat is sitting on the trailer or not in service. After a long period of time it will draw the battries down.

One push of a button on each CB will stop this by tripping the breaker and opening the circuit. To do this with a fuse you have to remove the fuse.

Ok, how long will it take an ARC’s milliamp drain to pull your batteries down to a level that requires recharging?!? 1-year? 2-years?

CB’s are preferred where they are also used as switches. Without exception, every piece of electronics and electrical equipment on my boat is on a double-pole breaker. But fuses are my choice for batts. I have 300amp type-T fuses on each batt bank and an easily accessible on/off switch for conveniently turning a bank on or off. Can’t see myself lifting hatch covers and opening up boxes to turn off a batt bank.

Fwiw, and I know this will be lost on many boaters and probably make me a target for someone’s complaining but I think it is absolutely crazy to go out on the water in a cc without fuses or breakers on the batt banks.

Changing fuses or dealing with nuisance tripping of a breaker, whatever. Both technologies have the pros and cons. Price wise fuses tend to be cheaper but there are bargains on breakers that make them the better buy.



Edit: do you fuse or breaker the [+] or the [-] of the batt bank??? ;?
Old 10-04-2006, 10:34 PM
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Default Re: need help ACR Blue Sea 7600


Edit: do you fuse or breaker the [+] or the [-] of the batt bank??? ;?
Positive lead should be protected.

IMO unless a fuse is necessary for faster response (certainly not an issue here) they offer no advantages over the convenience of circuit breakers
Old 10-04-2006, 11:21 PM
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Default Re: need help ACR Blue Sea 7600

capntang - 10/4/2006 11:38 AM

warthog,

What can you tell me about that battery box?
They are Optima Trolling Fury box's.

Where did you purchase the battery switches?
It was all bought from Best Boat Wire.com http://bestboatwire.com/


Ok, how long will it take an ARC’s milliamp drain to pull your batteries down to a level that requires recharging?!?
About 1 month.

What you can't see is that they are all soldered. Crimped to hold on, soldered for corrosion protection. I like the plastic ends to grab onto...
But the automotive end's "Still" leave an open to the element's.
For another $.10ea you could have used the better end's. I just think you did a nice job and then shorted yourself at the end of the job. ;?

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