R25SC Electrical Schematic

[dclagett]

I have a 2014 R25SC with a factory installed generator. I noticed that with all the battery switches off there is power to the generator control panel. I looked at the R27 owners manual Power Distribution schematic and it clearly shows that the generator and generator control panel should not have power unless the house battery switch is on. Is this just an error in wiring on my boat? Are there new electrical schematics for the R25SC available?

 

[snydzy]

I own a 2013 R25SC with the generator option. The generator utilizes the engine battery for starting, not the House batteries. There is a separate (red) compact battery switch below the P.D.P. (on the floor) of the port side generator locker that will turn off the power to the generator and its control panel. R27 Wiring schematics show the same. Hope this helps.

 

[dclagett]

Snydzy,

Thanks for your reply. I have not seen that compact battery switch that your boat has. I will look for it the next time I go to the boat.

As far as the R27 Owners Manual wiring schematic that I have and the one online on this site, the generator power ties directly to the house bus and requires the house battery switch to be on in order to power the generator. In addition this wiring diagram does not show the compact battery switch. I would be interested in getting a copy of your P.D.P. wiring diagram. Please let me know where you obtained your copy of the R27 Owners Manual.

Thanks again,

Dick

 

[snydzy]

Hello Dick,
Page 32 of the R27 manual shows the wiring schematic download/file.php?id=90
It shows the generator's power supply feeds off a parallel switch that splits off the engine switch supply that is fed directly off the engine battery. The generator then feeds to the AC panel. Follow the red line backwards from the generator on the schematic. The online manual is exactly the same as mine. Is this the same as yours? Best regards.

 

[dclagett]

Syndzy,

That is the same diagram I have. I may be wrong but the way I read that diagram is the parallel switch is for providing more power to start your main engine in the event your engine battery is low. It ties the house battery and engine battery in parallel. The thin yellow rectangle with green dots I would think that is the house power bus that one could tie into to get house power. That is where the generator ties into and that is why I think the generator's power is supplied from the house battery.

Maybe the factory could chime in so we could understand the notation on the diagram. That thin yellow rectangle I view as a bus (all connections tie to the house battery) versus a terminal block where each terminal is independent.

Thanks,

Dick

 

[snydzy]

Dick, I think the "notation on the diagram" might be better explained by the switch array. The Blue Sea website shows battery management wiring schematics that show a 2 battery 1 engine schematic with 3 ON-OFF Battery Switches, and 1 Automatic Charge Relay,.....very similar to our set up. This arrangement isn't noted on the schematics.
I walked out to my boat and looked how the generator was wired. It was fed directly off the engine start switch to a mini switch that connected to the generator.. No bus in between.

 

[dclagett]

Snydzy,

I only have 4 battery switches, Parallel, Thruster, Engine, and House. I don't have any mini switch that I can see. With all 4 battery switches off power is still available to the generator control panel. We are about to move 2 batteries over to the starboard cockpit locker to help with the port list. At that time I will create a schematic of how my boat is wired from the batteries to the various systems. I also want to understand how the house batteries are used. The factory schematic shows that one of the house batteries is used only for the inverter. I don't think this is true but the that is how I read the factory schematic. I also want to understand how battery charging is wired. It is not complete in the schematic that I have which also does not include the solar panel.

The above is why I would hope to hear from the factory on any updates or additional schematics.

Thanks for going to the boat to see how yours is wired, however mine seems to be different.

Dick

 

[Boatagain]

Hello Dick,

When I owned her I always wanted to move those batteries to even out the list, but I was too lazy. Yes, I was her former owner when she was known as Tug Dawg. I bought her new in September 2014 and she had no list until Pocket Yachts, not the factory, installed the genset before the 2015 season.

Maybe I'm oversimplifying, but aren't you overthinking this? Isn't it just a matter of extending the battery cables to whatever length you need to relocate the batteries? Btw, the stock batteries from the factory were replaced mid-July 2016. Let me know how the project works out.

Best of luck with her! We loved her!

 

[dclagett]

Boatagain,

Thanks for responding. My understanding was that the factory installed the generator, so having the dealer install it may explain why it is wired directly to the battery.

You are correct, moving the batteries is a simple job. My effort to trace out the power distribution and charging systems is just for my understanding of the systems and placement of components in the event I have a future problem.

Thanks again for the information and taking care of Tug Dawg, she is a great boat.

Dick