[C38] Wiring Diagrams

[Marc Stewart]

Steve,
Very nicely done.  This belongs on the C-38 tech
site!  Thank you,
Marc

------- Original Message -------
>From    : Steve
Smolinske[mailto:SSmolinske at rainierrubber.com]
Sent    : 11/29/2010 9:07:06 PM
To      : listserve at catalina38.org
Cc      : 
Subject : RE: [C38] Wiring Diagrams

 
Attached are two drawings of what I did on Peregrine.
 One word of caution if you are doing this yourself
make sure to check the famps for your wire runs and
size accordingly.  The wire sizes on the drawings are
based on the locations and wire pulls for my boat. 
You can download a wire sizing chart from Blue Sea
Systems its pretty simple to figure out the correct
size  amps X feet (both delivery and return) = famps
 then just use the chart to determine wire size.   
 
The drawing labeled "Wiring":  The grounds for the
sub panel, alternator and start battery all return to
the - (negative) post, I didnt draw them in just for
ease of reading the diagram.   If you install an
emergency battery as I did, before turning the
battery switch to open the emergency battery circuit
you must first flip the 100A breaker at the panel
OFF, or else you will instantly drain your emergency
battery as the current will rush into the house bank
equalizing out the house bank voltage with the
emergency voltage, this happens the instant that the
two banks are connected.  
 
Equipment referenced on the drawing:
 
Charger - Promariner Protech 1230i plus, 30 amp
ACR 7610 - Blue Sea Systems Automatic Charging Relay
Alternator - Balmar 70 Amp
ARS-5 - Balmar smart voltage regulator
Sub Panel - Blue Sea Systems, with digital ammeter
and voltmeter
House Batteries - (2) 220 amp 6 volt, AGM lifeline
Emeg. Battery - (1) 33 amp 12 volt, AGM Lifeline 
(powers sailing instruments, GPS, VHF, sailing
lights, and Emergency Strobe for about 8-10 hours)
Start Battery - (1)  12 volt not sure of amps, AGM
Lifeline
 
The second drawing labeled "Engine wiring"  is
basically ripping out the wiring harness and all of
the old wiring on the engine and reinstalling without
the ammeter as Tom T mentioned in earlier posts.  
The alternator is absent from this drawing as it is
included in the other drawing.    
 
Location of equipment"
 
House batteries, Charger, ACR, +/- posts, DC Shunt,
300 amp ANL fuse and a spare are all located in the
battery compartment under the port settee.
  
House battery and ARS-5 Voltage regulater located in
the port cockpit locker,
 
Emergency battery and its battery switch are located
just forward of the fuel tank under the quarter berth. 
  
The 100 amp ANL fuse in line from the alternator to
the postive post is located just underneath the
alternator and secured to the floor of the engine
compartment  along with a spare fuse.
 
I also pulled all new wiring in the mast, cabin, and
running lights as well as rewiring the back of the
engine control panel.  What I noticed when I was all
done is that the lights are brighter, and the blower
was so much louder I could actually hear it working.
 Its also really nice to have an accurate voltage
meter and ammeter at the control panel.  The panel
readout now matches what my multimeter shows at the
batteries.   Hope this helps.  Ill write up a more
detailed article for the next Mainsheet.  Aww one
last IMHO if you do this or any work invest in one of
the ratchet style crimpers, that way you know exactly
that your crimps are solid (I didnt and wish I had)
and use the heat shrink connectors the extra price
will save lots of time and make the job last that
much longer. 
 
Steve
#312 Peregrine 
Seattle