Installing Extra USB-C Chargers on 32c (2012)

[UAT Norway]

For someone with limited knowledge of electrical systems, especially the 301 panel on my 32c (2012), could someone provide a brief explanation of how to install 2 additional USB-C chargers? One should be located near the helm, and the other in close proximity to the 301 panel. Do I need an additional relay? Which of the F switches should I use? Where do I connect the positive and negative cables? Additional fusing on the cables? Etc.
As you can see, I need a basic course on this

[Happysailor]

Hi UAT,

I have a later model en not the 301 panel fitted with the relays anymore, but can give some tips you may find useful.
Pick one of the F’s which are not occupied, very likely they are equally fused. Connect your “+” of the USB’s to the free connection of the chosen “F” on the board and link your plusses through. Connect your “-“ of the usb to the common “-“ rail and you are done!
Seems a simple job to do and I would not propose any additional fusing as it is already fused on the panel

[Krumelur]

Some tips from my USB installations.

Go with USB-C or use plugs offering both USB options. The trend clearly is USB-C. I recommend two connectors per outlet.
For the one at the helm, get a version that can be closed with a lid when not used and, if possible, mount it pointing downwards or in any other position where it's not exposed to sun, rain, or sea water.

The hardest thing will be to get a wire from the helm down behind the panel but can totally be done. Specifically for the one going to the helm, which is a significant distance, make sure you use wiring that is well dimensioned and preferably use tinned wires. I installed 2,5 square-mm wires for all of my USB installations.

USBC supports higher wattages than traditional USB. I can charge my MacBook fine on any of the ports in the cabins or at the helm.

For the panel: I used F4 which is fused at 180W/15A.

[UP]

Pay attention to the wattage of your preferred USB-C module per port. USB-C is capable of delivering more power, but this does not mean that all charging modules provide higher wattage.

For example, I'm installing a Coolgear CG-PD100C module at my captains desk behind the main electrical control panel and I'm bringing it out to the panel with a "through panel" USB-C socket. This unit is up to 100W power, which is plenty good for charging laptops from your 12V power bank. It takes an input voltage between 9-25V.