confused about isolator switch

hey guys if anyone is on the ball with this can u tell me...we have a three way switch  1 2 both and of course off, now should our accessories run on both batteries if we have number 1 set up for starting, we have set everything on b us bars can anyway shed light on the subject as to what is goping on. my number is 0437443045 if anyone knows please call we are stumped

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Posts: 4561

Date Joined: 01/02/10

 All accessories run off your

Sat, 2014-12-27 15:33

 All accessories run off your power out terminal. Battery 1 and 2 to their respective terminals. 

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Does anyone know where the love of god goes, when the waves turn the minutes to hours?

cell's picture

Posts: 215

Date Joined: 06/07/13

pretty sure its how we have it dodgy

Sat, 2014-12-27 15:50

but should electrics work off both battery even though they are connected to battery two. will they drain batt1 or drain from 2 when running on 1

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Tim's picture

Posts: 2497

Date Joined: 26/09/06

Switch

Sat, 2014-12-27 19:17

Sounds like you have connected all your accessories directly to battery 2. If so they will always run from that battery but if the selector is not on 2 or both it will not charge. The isolator will not cut them off either if connected this way.
Normal way to set it up is to have them connected as Dodgy has said

cell's picture

Posts: 215

Date Joined: 06/07/13

hey dodgy

Sat, 2014-12-27 15:52

could u ring me at all please

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Posts: 6454

Date Joined: 08/08/11

 I think it is only critical

Sat, 2014-12-27 17:31

 I think it is only critical if you have a cranking battery and a deep cell battery.  In which case you would have a different switch.  I have with 1, 2, both and off switch.  I run 1 or 2.  never both.  If you need to, use both to start then switch to 1 or 2.  alternate with on each outing, or run on 1 on your way out and 2 on the way in.  That way, the other battery should always be charged...

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Fish! HARD!

Posts: 251

Date Joined: 28/07/11

I had the same 3 way switch

Sat, 2014-12-27 19:13

I had the same 3 way switch on my boat, how it was on mine was if you select Batt 1 then everything runs off Batt 1 - Engine, Accessories the lot, same if Batt 2 was selected - everything is running off Batt 2. I swapped mine out for the BEP Battery Management Cluster. With this I now have both batteries totally separated with Batt 1 purely for the engine and Batt 2 purely for accessories. It charges the engine batt first then when full switches over to charge the accessories battery. One of the best things I have done is put this on.

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Date Joined: 08/08/11

 Is your second battery a

Sat, 2014-12-27 19:19

 Is your second battery a deep cell battery with the BEP cluster?

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Fish! HARD!

Posts: 6454

Date Joined: 08/08/11

 Is your second battery a

Sat, 2014-12-27 19:20

 Is your second battery a deep cell battery with the BEP cluster?

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Fish! HARD!

Posts: 251

Date Joined: 28/07/11

Just re read your post. If

Sat, 2014-12-27 19:16

Just re read your post. If you have your electrics bypassing the switch and going straight to Batt 2 then they wont drain batt 1 if the switch is on batt 1. If your electrics power cables run through the switch then I think you have the situation that was originally on my boat.

Posts: 251

Date Joined: 28/07/11

.

Sat, 2014-12-27 19:33

No I don't think so, they are both the same. Not sure what they are.

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Date Joined: 08/08/11

 I think the BEP cluster is a

Sat, 2014-12-27 19:43

 I think the BEP cluster is a good system, and when I redo my electrics probably in about 2019, I will investigate that further.  my understanding is you get the most benefit if the 2nd (or 'house') Battery for your accessories is a deep cell battery.  As you say it charges the 1st (cranking) Battery until full and then tops up the house battery.

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Fish! HARD!

sstevee's picture

Posts: 466

Date Joined: 15/11/11

I've added a blue-sea

Sat, 2014-12-27 20:13

I've added a blue-sea add-a-battery to my tub... Has a VSR which automatically isolates/combines batteries and a single isolator which is on/off/combined (emergency crank only). So all you do is switch the isolator on and you're away

cell's picture

Posts: 215

Date Joined: 06/07/13

we have done everything

Sun, 2014-12-28 11:31

you guys have said still have same prob only now got more motor probs as didnt even get out for pots this morn, lol and Randalldf223 we dont have the bep switch it is a marine 3way col hersy but yeah time for more mechanics i think lol, now we have a bigger drama with going out the engine over heated she got us hm but there is no power to the control box no ignition nothing,

 

are there any boat mechanics on here at all

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GIVE ME A FISHING ROD.....WELL THE REST IS HISTORY