You mentioned that you are not an electrical expert so I apologize if this
line of questions and comments seem condescending.  It's not intentional.
Where are you hooking up the ground or black wire?  There should be a
ground bus near-ish to the breakers.  That's your negative.  All of the
other Black (or yellow) wires will be tying into this bus bar and a thick
black wire will be attached which leads to the battery negative terminal.

Each breaker will probably have one side which is tied to all the other
breakers.  Sometimes this is a solid copper bar connecting between them.
At the end of the copper bar you'll have a thick red wire which leads to
the battery positive terminal.  In the same way you directly connected the
fan to the battery you should be able to directly connect the fan to the
red bus and the black bus.  If that doesn't work then you have bigger
problems and you'll likely find that none of your loads work

Perminently attach the black wire for your fan to the black bus with the
correct ring terminal - crimped tightly.  Now on the breaker, attach the
red wire to the terminal opposite of the red bus with and properly crimped
and insulated ring terminal.  Ensure that the breaker is on.  The fan
should work.  If not then your breaker may be bad.  Flip the breaker a
couple of times and ensure that it is fully engaged.  One way will spring
open/off the other way will latch closed/on.

If that doesn't work then it is sounding more and more like your breaker is
bad.  Try a different breaker or test for voltage between the output
terminal and the ground/black bus.

Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD


On Apr 30, 2017 10:56 AM, "Kevin Paxton via CnC-List" <cnc-list@cnc-list.com>
wrote:

I'm trying to install some cabin fans. (https://www.westmarine.com/
buy/caframo--sirocco-cabin-fans--P012_361_002_507).
Amperage High: 0.31 Amps
Medium: 0.24 Amps
Low: 0.14 Amps

I wired it all up yesterday to my breaker panel and when trying to turn it
on, nothing happened. I then took it off the wall and connected it directly
to the battery, and it worked just fine. I then tried to connect to
directly to the feed line of the breaker panel and it didn't work.

I'm not an electrical expert but I would think connecting it the way I did
to the breaker panel would not have a large voltage drop. I was using 16awg
from the breaker to the mounting location. I might be a little low on the
gauge of wire for that length I admit. That was my first guess. But
connecting to the panel line feed directly still didn't do anything and
that baffled me.

Any ideas on what could be going wrong? The batteries are new last year. My
battery meter was saying approx 70% charge capacity when doing all of this.
The cabin lights and other electronics were working while I was trying to
do this too.

I'm at a complete loss here.

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