[MRCA] 24V Power Distribution in a Vehicle

[B. Smith]

I prefer simple barrier strips, you will always have a "power" 
connector, in a emergency or during a "field exercise"  you can simply 
strip the end of the wire and put the wire under the screw and tighten- 
   -   -   -  but it is best to use terminals crimped with a 
professional crimp-er. With this barrier strip system you can hook up 
some one else's equipment easily as well as emergency equipment and 
accessories.  Throw powerpole and other "ham"  junk connectors in the 
trash.  Install a master barrier strip connected direct to the battery 
and then run wiring to sub strips in the vehicle. PAINT positive  screws 
RED and NEGATIVE screws BLACK to help prevent those little screw ups 
while your are in the field.

Run your DC "BUSS" wiring from the "positive" and the "negative" 
terminals of the battery  for best  noise reduction. DON'T use the 
vehicle ground. Run a ground wire. Use the largest wire you can find for 
positive and negative wires. Hint: go to a welding supply store and 
purchase welding cable. Run wiring through insulated grommets etc.  FUSE 
both the positive and the negative AT THE BATTERY  with , I prefer a 
cartridge fuse and a cover.(shown in the photo to the left)

When fusing your mobile equipment make sure that the radio's fuse holder 
connections grasp the fuse completely around each end, some fuse holders 
just make connection by pushing on the tip of the fuse via spring force 
and the this does not provide very much contact area.  It doesn't take 
much resistance in a connection to lower your voltage at 14 volts and it 
also over heats.

Battery Connection: Obtain side post converters , see picture, CAUTION 
check the length of the bolt  when installing and make sure you do not 
go through the battery case.

Best noise reduction  replace the cable to your radio with larger 
cable.  Cut off your original cable near the radio within a couple of 
inches and splice in another cable (solder the splice with a "large iron".

Z









On 6/24/2013 9:44 PM, W2HX wrote:
>
> Ok, along the lines of my recent posts about 24V converters. What are 
> you folks doing to distribute 24V around you vehicles (comm shelters, 
> etc)? Are you just hardwiring into a fuse panel? ATC or Glass fuses? 
> Is anyone using circuit breaker panels that double as on/off switches 
> for the units? Anyone using some meters to watch VDC and Amps?
>
> Is there an email group for combination milradio/milvehicle owners?
>
>

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