This question is a little strange but might be relevant for others as well.
I've been doing some serious rewiring (and reading in order to get it right). In my reading I've come across several references
to the fact that improper stackup causes heating
and can even cause boat fires. I'm wondering if anyone can explain why this is the case? Just increased resistance in a high current
I think I've "always" understood that the proper order for stacking (for something like a bussbar or battery
terminal) is: cable ring terminal, flat washer, lock washer, nut. But that raises a few questions. When you have more than one cable on the same terminal, how do you stack them? The crimped ring terminals are not symmetrical, i.e., one side is "higher" because the crimp is asymmetrical. I assume that you just have to be sure that they are flat and in good, complete contact when bolted down.
How many cables
or wires can be located on one stud (maximum)? I've read three and that makes sense to me but I wonder if anyone has a comment.
I've found a couple of places where the flat washer is missing in the stackup. I guess I'll just buy a few and put them in. I'm uncomfortable having the lock washer pressing down directly on the cable or fuse ring. Since the lower AWG cables
are going to things like copper bussbars or fuses
, I assume these should be brass washers. No point in having too many different metals.
I've also got a boatload of terminal strips connecting wires (cables) for distributing power to all sorts of equipment
. Wire sizes ranging from about 12 to 18 AWG. These don't seem to be tinned copper with brass screws but they are all working fine. They don't have any washers, flat or lock. But they are all tight...some are VERY tight so I assume that these just rely on the screw head
for contact and the thread for tightness.
On a slightly different note. I've got some "conducting" grease that ham radio
guys use on antenna
connections, etc to prevent corrosion
where there is weather
. I've been using it judiciously on some of the large connections like battery
cables and big fuses
I hope there are some wiring
gurus who'll comment.