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-   -   Running Out of Panel Switches (https://www.sailnet.com/forums/electrical-systems/187945-running-out-panel-switches.html)

engineer_sailor 02-18-2015 08:20 AM

Running Out of Panel Switches
 
We are upgrading to a helm mounted chart plotter on out Catalina 27. Our switch panel is full with all the various running lights, macerator, water pump, autopilot, instruments, etc. The bilge pump installed last year will have its switch mounted outside of the panel since it wouldn't fit anyway.

Initially consider putting on the same switch as the AP but if the AP blows the fuse would lose both steering help and navigation simultaneously. Now thinking about wiring it directly to battery with inline fuse. Even at anchor we keep our current handheld on for a drag alarm.

Thoughts?

Josh

eherlihy 02-18-2015 08:33 AM

Re: Running Out of Panel Switches
 
I suggest grouping the running lights, anchor light, steaming light, and foredeck light (if you have one) onto a single breaker "Nav. Lights" at the main panel. Then install a waterproof breaker panel, fed from this breaker, at the helm with individual breakers for each of these light circuits.

I have grouped my chart plotter, VHF, 12VDC outlet, and hardwired laptop to a single breaker labeled "Nav. Station" (where this stuff is mounted) and have a 6 circuit blue seas fuse panel for the individual circuits.

jsaronson 02-18-2015 09:15 AM

Re: Running Out of Panel Switches
 
Bilge pump should be wired to the battery if it is automatic.
Plotter draws little current. I would piggy back it onto the AP unless you want to add another panel.

MarkSF 02-18-2015 12:41 PM

Re: Running Out of Panel Switches
 
I had the same issue, adding more instruments.

I added one of these, powered up by the instruments breaker.

https://www.bluesea.com/products/502..._Bus_and_Cover

Then individual items - chartplotter, NMEA 2000 network, etc. get their own (small) fuse on this block. This has an advantage, that a fault in one instrument will not take them all out.

Obviously, your old instruments should also get re-wired to this block.

Running devices directly to the battery should be avoided.

miatapaul 02-18-2015 02:07 PM

Re: Running Out of Panel Switches
 
Quote:

Originally Posted by MarkSF (Post 2587881)
I had the same issue, adding more instruments.

I added one of these, powered up by the instruments breaker.

https://www.bluesea.com/products/502..._Bus_and_Cover

Then individual items - chartplotter, NMEA 2000 network, etc. get their own (small) fuse on this block. This has an advantage, that a fault in one instrument will not take them all out.

Obviously, your old instruments should also get re-wired to this block.

Running devices directly to the battery should be avoided.

Is there a reason that everyone uses breakers rather than fuses? I know they are convenient to turn off, and if they blow you can reset them. Otherwise a fuse with a toggle switch seems to be a good option for low draw electronics, just make sure you keep lots of spares. I was always told that turning off breakers as if they were switches was not good for them, as they are not designed to be switched off and on frequently and it would cause carbon to build on the contacts(or some such thing). Lots of restaurants I have worked in do it though.

MarkSF 02-18-2015 02:22 PM

Re: Running Out of Panel Switches
 
My breakers all date from 1984, and are the only way to switch things on and off. So that hardly supports the theory that the life is shortened.

MarkofSeaLife 02-18-2015 02:53 PM

Re: Running Out of Panel Switches
 
1 Attachment(s)
Get Over It!

All boats have a few less breakers than you need. Just add a wire into any breaker screw hole that still has space. You will remember which is where. When I want the AIS on I have to turn the cabin fans on. When its hot everyone knows where I am.

I do, vaguely, pity the next owner of this boat :eek::laugher:laugher:laugher

MarkSF 02-18-2015 07:28 PM

Re: Running Out of Panel Switches
 
It took me about a year to figure out that the switch for the propane solenoid was only energised when the starboard cabin light breaker was on.

That's why I label stuff, now.

hellosailor 02-18-2015 07:55 PM

Re: Running Out of Panel Switches
 
Paul=
"Is there a reason that everyone uses breakers rather than fuses?"
Yeah. On boats, like private aircraft, if you have a breaker you don't have to rummage through all the drawers and spares and then say "Honey, I'm taking the dink, I'll be back tomorrow with a new fuse, live in the dark until then."

Fuses can be a RFPITA that way.

As to breakers, there are two main kinds. Thermal breakers, which DO wear out with each trip, and magnetic (magnetohydrodynamic, whatever) breakers, which don't. So after maybe 30 years, you can replace them anyway.
I hate fuses. Coupla years ago, I took all the spare fuses for my car and put them in a "week long" PILL BOX that allowed me to sort most of them out by size (Monday=2.5Amp, Tuesday=5, etc.) but I don't know how many years it took to figure out that was a logical way to get all the plastic boxes (5 fuses per, in whatever assortments?) migrated into one place.

Engineer-
For those of us who foolishly have not memorized the layout of the Cat27 breaker panel, perhaps you could post a pic? Most panels, on most boats, are either modular or expandable. You get a new panel face, but all the breakers are moved over or kept in place, so the expansion isn't as expensive as you might think. And, you get the benefit of one nice neatly organized breaker panel, or panels. Instead of something either crowded or cobbled.

SVTatia 02-19-2015 09:26 AM

Re: Running Out of Panel Switches
 
Quote:

Originally Posted by engineer_sailor (Post 2587129)
We are upgrading to a helm mounted chart plotter on out Catalina 27. Our switch panel is full with all the various running lights, macerator, water pump, autopilot, instruments, etc....

Consider adding one panel just for the navigation lights, relatively inexpensive and you'll have a visual indicator of whats on:

Navigation Lights Control Panel by Borel Manufacturing Inc.


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