Standard Outlet vs. 30 amp Shore Power

Nov 7, 2012
678
1978 Catalina 30 Wilbur-by-the-Sea
I have a 50watt solar panel to keep both banks charged up and floating. I never connect to shore power, saves the fee at our marina and helps isolate the boat from the neighbors stray currents.
 
May 29, 2015
18
Hunter 27 Severna Park, MD
I have a 50watt solar panel to keep both banks charged up and floating. I never connect to shore power, saves the fee at our marina and helps isolate the boat from the neighbors stray currents.
I have been seeing more and more about solar power. Our main goal is to keep the batteries charged and the auto bilge running so I imagine we would not need anything larger than a 50watt panel. Solar seems like an ideal option for us. What type of professional would we hire to do installation since we are not handy inclined? Also, any idea of price range in outfitting a 27 foot boat?
 
Nov 7, 2012
678
1978 Catalina 30 Wilbur-by-the-Sea
Hmm Here is a link to what I have going on I wrote last year.

My Solar write up... | Every good thing.... https://svknotaclew.wordpress.com/2014/03/31/my-solar-write-up/ The smaller panel was on our last boat, a C27.

We still have yet to permanently install our 50watt. It just sits on the port side top of the house tied to the traveler with the boom sheeted to starboard. We just untie it and stick it below when we want it out of the way.

Wiring it up is pretty easy. If you hire someone just make sure they use water tight (heat shrink) crimps done with the correct crimp tool or you get the all weather connectors to go with the panel (a bit more spendy). My entire setup cost under $200 and we have been using it exclusively since 2013.
 
Feb 26, 2004
22,984
Catalina 34 224 Maple Bay, BC, Canada
Solar for beginners

I have been seeing more and more about solar power. Our main goal is to keep the batteries charged and the auto bilge running so I imagine we would not need anything larger than a 50watt panel. Solar seems like an ideal option for us. What type of professional would we hire to do installation since we are not handy inclined? Also, any idea of price range in outfitting a 27 foot boat?
I think we may have linked you to this website before:

http://www.pbase.com/mainecruising/boat_projects

There's really nothing YOU can't do if you follow these handy tips & tricks.

Before you hire someone else, learn what you can do. And maybe slow down for a while until you do. Our joint experience here indicates many folks do all sorts of stuff with new-to-them boats, some not necessarily wise. In this case, it's a great idea, but do some homework and research first, YOU CAN do it!

Good luck.
 
Jun 27, 2014
117
Jeanneau Moorings International 50 Everett
The draw and ways to reduce it entirely depends on the charger you have. And even if the manual lists something, verify the make and model of the charger. I am on my third charger on a 2001 boat. They do go, especially the cheap ones that come with the boats and the cheap ones sold at West Marine.

As far as reducing amperage, charging one battery at a time won't do it. Most chargers will put out the same amperage regardless of the number of banks. If you have a 40 amp charger and attach two banks, each bank will get 20 amps. Only attach one bank and that bank gets 40 amps. However, many of the newer chargers allow you to reduce the output. Our Xantrex Truecharge 2 40 amp charger can do from 10%-100% of the output. So in the past when I was charging the batteries off of a 2000 watt generator, I had to reduce the charger to 60% so that it didn't cause the breaker on the generator to blow.
That's only true if the batteries are dead. If they are full they'll only accept a few amps regardless of how many amps your charger can produce, or the size of the bank. Don't let your batteries get low if you are only going to have limited ability to recharge them.
 
May 29, 2015
18
Hunter 27 Severna Park, MD
I think we may have linked you to this website before:

http://www.pbase.com/mainecruising/boat_projects

There's really nothing YOU can't do if you follow these handy tips & tricks.

Before you hire someone else, learn what you can do. And maybe slow down for a while until you do. Our joint experience here indicates many folks do all sorts of stuff with new-to-them boats, some not necessarily wise. In this case, it's a great idea, but do some homework and research first, YOU CAN do it!

Good luck.
Stu, Your advice is right on. You are describing me exactly! I need to step back and proceed with a more methodical approach. I am getting caught up in all the things I want to do to the boat…immediately. We just sailed her home yesterday so now she is close enough for me to run over and work on the smaller things (and do some more reading and research) before we go crazy committing to some of the larger modifications. I don't think I had the link you attached above so I will add that to my reading list. Once again, thank you for sharing your knowledge and advice!