Blue Sea Fuse Block and Circuit Breaker Installation
It's been nearly 2 years since I purchased the
Blue Sea ST 12 Circuit Fuse Block and
100 amp Thermal Circuit Breaker. Finding a location that was secure, accessible, and protected was a challenge in of itself. Two spots were considered in the engine bay, but I opted out for those locations since majority of the power requirement would be aft of the engine fire wall. Other spots considered were passenger side forward foot well, RH side of passenger seat, RH side of cargo area deck. I just wasn't feeling any of these locations for the installation of the fuse block.
My perfect location for the fuse block was always there, just never realized it till recently. The RH cargo cubby... It would take a new bracket to be fabed up and an awful lot of wire, but it made perfect sense to me. Everything would be in line with the second battery on the RH side and all my requirements would be met.
The bracket for the fuse block is attached in the cubby using 4 stainless steel bolts with a combination of spacers and rubber bushings to provide vibration dampening and clearance for the West Marine 12v and Blue Sea dual USB charging outlets. With the Blue Sea fuse block cover on... clearance is maintained allowing for installation of the cubbies cargo cover maintaining a clean, protected, and out of sight installation. See top picture.
With ~12ft. of marine grade wire being used I referenced a
Wire Gauge Chart and decided on using 4 gauge wire for a max of 100 amps. Both wires were protective wrapped and routed along the factory bundle behind interior fairings, in the rear and passenger door sills protective housing, and behind passenger footwell housing into the fire wall rubber boot that provided access to the engine bay. The negative was connected directly to the negative battery terminal and Positive was routed to the 100 amp circuit breaker that I attached to the cruise control cover and on to the positive terminal.
Best benefit in having a switchable circuit breaker besides protection is being able to turn power on and off to the fuse block as desired to prevent parasitic power draws to the secondary battery and be in control for when it receives power.
I'm pretty happy with my electrical system... IBS, new grounds and links, alternator, Blue Sea components, and West Marine electrical components. Both batteries are AGM and same CCA... as recommended for the secondary I flipped it to have the positive inboard. This will have to work for the time being till I can replace it with a similar Sears battery with terminals inboard. Rubber boots for the Terminals and Circuit Breaker will be on the list as well.
Ignition off circuit breaker on... we've got power!
Oh Yeah! Powers on, both batteries are fully charged and linked, and alternator is producing.
With 10 circuits left I'm planning on installing USB power outlets for the rear seat and passenger areas, 12v outlet for drivers area, CB, HAM, air compressor, light for cargo area and rear vehicle, and eventually a fridge for the 12v that already in the cargo area... I"ll just drill a hole through the cargo cubby cover.
Completing the foundation for all my current and future electrical needs has been very rewarding to see it all come together. This has by far been my most time consuming modification to the LC and I'm glad for the most part is done. :ylsmoke: