Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 17-07-2011, 15:09   #1
Registered User

Join Date: Mar 2009
Location: Sydney
Boat: Lexcen 40 - Leverage
Posts: 383
Daytrips - Do You Turn the House Switch Off ?

Greetings Folks,

I have just installed my Frigoboat fridge and have wired it temporarily and am happy to report that it works (yaay!)

However, what has me puzzled is that at the moment it is wired into the boat on a normal switched circuit - such that when the house switch is off, so is the fridge... but wait a minute - that means that when you leave the boat for the day and turn off the house switch - the fridge is also off? Not good. So do you put it on an unswitched "always on" circuit?

Likewise, I have a 675AH bank and have a tiny 65W solar panel, so have it feeding the batts unregulated, but this also gets disconnected with the house switch off... again, should this be unswitched?

We're planning on cruising fulltime starting a few months (anchoring 99% of the time), and were thinking that we'd turn off the house switch as we leave the boat to explore for the day etc (or a few days max), but didn't think of the fridge or the solar panel..

What do people do in the Real World(tm) - do you leave your house switch on when you leave for the day?

Your experience and advice is greatly appreciated!
__________________

__________________
akio.kanemoto is offline   Reply With Quote
Old 17-07-2011, 15:14   #2
cat herder, extreme blacksheep
 
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 17,770
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: Daytrips - do you turn the house switch off?

my ericson always has house bank on but all the switches on panel except solar panels are turned off. i leave my formosa always on as i live on board.
__________________

zeehag is offline   Reply With Quote
Old 17-07-2011, 15:17   #3
Registered User

Join Date: Dec 2009
Posts: 3,016
Images: 4
Re: Daytrips - do you turn the house switch off?

I've never turned the house switch off except for repairs. People do that?

Wire the fridge up like anything else. The manufacturer's common recommendation to wire it straight to the batteries is for those who cannot build proper electrical systems.

The solar panel, especially if unregulated, should probably go the the battery side of the switch because without a battery in the circuit, when the switch is off, the circuit voltage could get too high for some equipment. Maybe up to 18v?
__________________
daddle is offline   Reply With Quote
Old 17-07-2011, 16:13   #4
Moderator... short for Cat Wrangler
 
sarafina's Avatar

Cruisers Forum Supporter

Join Date: Jul 2009
Location: San Francisco
Boat: Cal 28 Flush Deck
Posts: 5,559
Images: 56
Re: Daytrips - do you turn the house switch off?

is this a 110 / 12 volt model?
__________________
Sara

ain't what ya do, it's the way that ya do it...
sarafina is offline   Reply With Quote
Old 17-07-2011, 16:18   #5
Registered User

Join Date: Mar 2009
Location: Sydney
Boat: Lexcen 40 - Leverage
Posts: 383
Re: Daytrips - do you turn the house switch off?

Hi,

Thank you for the quick replies - greatly appreciated!

It's a standard 12V model.

Looks like I'll be leaving it as is then and ignoring the off switch!

Great pointer on the solar - I didn't think of that, will rewire to before the switch then.

__________________
akio.kanemoto is offline   Reply With Quote
Old 20-07-2011, 01:13   #6
Registered User

Join Date: Mar 2009
Location: Sydney
Boat: Lexcen 40 - Leverage
Posts: 383
Re: Daytrips - Do You Turn the House Switch Off ?

Hello again,

One last question - assuming that I wire the solar output directly to the batteries - do I need to also wire in a relay such that the output is disconnected when the alternators are charging the bank (so the alternator regulator doesn't sense the solar voltage and decides that the battery is full etc..)

I'm thinking of wiring the solar panel through a normally closed relay which is energized and disconnects when the alternator regulator is turned on.

Thanks again!
__________________
akio.kanemoto is offline   Reply With Quote
Old 20-07-2011, 01:48   #7
Senior Cruiser
 
Talbot's Avatar

Cruisers Forum Supporter

Join Date: Jun 2004
Location: Brighton, UK
Boat: Privilege 37
Posts: 3,579
Images: 32
Re: Daytrips - Do You Turn the House Switch Off ?

Quote:
Originally Posted by akio.kanemoto View Post
I'm thinking of wiring the solar panel through a normally closed relay which is energized and disconnects when the alternator regulator is turned on.
Thanks again!
Not really relevant to your question, but a fridge does consume a lot of power, and if you are considering it being left on, you really need to either have enough constant power *wind/solar, to keep it running, or add in a power sensor that will cut out the fridge when the battery has fallen below a certain level.
__________________
"Be wary of strong drink. It can make you shoot at tax collectors - and miss."
Robert A Heinlein
Talbot is offline   Reply With Quote
Old 20-07-2011, 02:12   #8
Registered User

Join Date: Mar 2009
Location: Sydney
Boat: Lexcen 40 - Leverage
Posts: 383
Re: Daytrips - Do You Turn the House Switch Off ?

Quote:
Originally Posted by Talbot View Post
Not really relevant to your question, but a fridge does consume a lot of power, and if you are considering it being left on, you really need to either have enough constant power *wind/solar, to keep it running, or add in a power sensor that will cut out the fridge when the battery has fallen below a certain level.
I have a 675AH bank, so leaving the boat for a few days won't kill the bank, although I can't see myself leaving the boat at anchor for more than a single day anyhow. While we haven't started cruising yet, I imagine that for multi-day trips, it will have to be left at a marina, so I will have to invest in a charger, since there's really no way to add another panel beyond 65W to the boat without some major changes.
__________________

__________________
akio.kanemoto is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tired of the 1-2-n-b Switch phantomracer Electrical: Batteries, Generators & Solar 39 09-10-2012 11:58
Xantrex Link Pro Sailagain Electrical: Batteries, Generators & Solar 52 19-11-2011 18:54
House to Boat samson Off Topic Forum 6 14-07-2011 15:53
Neutral Safety switch breeze22798 Engines and Propulsion Systems 6 05-07-2011 21:03



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 12:21.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.