Not wanting to waste empty space if I don’t have to, I installed conduit up inside the bulwark (which would normally be empty). There are two runs of one inch conduit, stacked one on top of the other. Both originate from the engine room. The top conduit, runs all the way to the forward anchor locker. The second one stops at the rear part of the forward salon (where we are contemplating a small “nav” station). It then picks up from there and runs to the forward head.
The “top” conduit will carry the control wiring and battery charge cabling to the high load devices up forward (electric windlass, electric bow thruster, and the battery that powers them). The first part of the “bottom” conduit will carry power and control wiring to the two forward bilge pumps. Note that we are considering a networked distributed power system, but these devices you would not want to include in such a system for safety reasons (you want bilge pumps to be wired as simplistically as possible, and, likewise, having your windlass and thruster always online can be important). The remaining portion of the “bottom” conduit (that runs to the forward head) is open with nothing planned.
This is your typical PVC electrical conduit that you would find at your local hardware store. It is wrapped in tinned-copper tape (which will eventually be grounded) to reduce the chance of RFI gremlins.
Part of the installation includes the machining of small “conduit guides” that help keep the conduit snug up inside the bulwark and reduces movement. The “fork” part of the guide, pinches the upper conduit as it is wedged up into the bulwark, keeping things snug. The lower “hole” of the guide is just big enough to get through the conduit, with couplers. These guides are glued atop every bulkhead and support that the conduit passes over.