Originally Posted by TonimusMaximus
Those screw knob disconnects are great. We have two in the '63 Nova I helped build. They handle way more than 80 amps intermittently. Why not just hook it up and leave it alone? The disconnect is nice to have to be able to charge one battery at a time if needed, but there shouldn't be any real need to ever disconnect the battery.
They are like I said, just a 0.02" hair less than 2-1/2 inches long to give perspective. The silver screw that you hook cables to is 5 mm
and poorly threaded in the lower body. That blue knob is molded around a brass 5 mm
bolt for lack of better term, it's also threaded into the upper body part through the lower and the white plastic insulating piece but the threads are only marginally better.
In the interest of long term durability, I drilled both out (after ascertaining that 6 mm would clear the larger hole in lower part insulated from upper part
) to tap out to 6 mm
and used a new tap. I brought a 6 mm
bolt through both from the back side and snugged up well I then used a nut & washer on the wire mount "stud" I made steel knobs from some odd bits I had and tapped a center hole at the same 6 mm thread.
I installed the knobs I made and then used a thin lock nut on the end of the "stud" to stop the knob spinning off when I open the disconnects. 1-1/4 turn from open to close max. Works great.
I even bought a spare, just to have, in case one breaks someday.
When building my home, I was often accused by a buddy of never using just two 16Ds where three or four will fit.
I demonstrated for that buddy when helping him build his home, that you can use construction adhesive and
four 16Ds on a wall stud end. Then he had the nerve of asking me to go find some bent nails and straightening them.