Second to last item on the
hurry-up-and-start-it list is power cables. Doing my best to imagine future connections, calculate line loads & wire size to match, make it easy to work with in the future... all while moving forward carefully so I don't set fire to a whole day's worth of pay on stupid mistakes. I think I've gone thru a dozen+ sketches at this point... & I'm sure this one won't be the last:
Everything I'm using in the engine compartment is tinned marine-grade wire
(made by Ancor) with a relatively high strand count for flexibility. The primary level of connections is 2/0 AWG size between: the 2 batteries, starter, alternator, major ground point's
(engine, frame, body, etc), charge controller, & circuit breaker switches:
I had some ideas to maybe build my own crimping device for these large cables, but after stumbling on a deal on a handheld hydraulic crimper I decided to give it a go:
It does a fantastic job! Made a few test pieces that I put thru all manner of abuse to see how well it holds. I feel plenty confident in them after cutting a few in half to see the strands & lug had achieved a uniform cold weld. The shrink tube may be overkill with such a strong mechanical connection, but I trust in the dual-layer Raychem adhesive lined tube to add an extra chemical connection to further reduce the likelihood of moisture & corrosion. These parts haven't been cheap
(in money or time) & I want them to last!
SO glad I found these "military style" battery post terminals
(they do have big covers to match) with room for several large lugs, because after laying out my primary connections I nearly max them out:
My charge controller is getting a temporary mounting on the driver's side fender while I work on these cables & wait for a rivet-nut tool to arrive so I can mount it solidly:
(& properly plug that big duct taped hole from the old airbox right behind it)
I'm taking advantage of the space above the coolers to run the main battery linking cables. My cooler's top brackets got a new hole, tapped to receive a pair of stainless double-hump clamps:
A few sections of protective spiral wrap & I think they'll fit thru there nicely:
I'm nearly done making all my primary 2/0 cables... man they're big! It's a good thing I didn't cheap out & run weld-lead wire or something, because the flexibility of this stuff has made building all these enjoyable, when it could've easily been a nightmare: