The problem is sometimes screw terminals don't like to have multiple wires in there, especially close to what it physically can fit in the space. Having an excessive number is like drinking through multiple straws. One or two were probably more than what you could swallow. 3 or 4 straws might have allowed more drink to move at once, but if you can't swallow fast enough, it doesn't serve a benefit. Similarly, if two wires is enough to carry the conservative max 15 amps then 3 or 4 doesn't get you anything more for our use.Quote
Garry Bartsch
Yes, there were plenty of wires. I tested how many wires can fit in the RAMPS connectors and found I can get four in per connector. So I have sixteen total for the yellow and black power (four bundles of four wires) and I figure the more the merrier.
Personally I'd go with 3 wires each terminal as long as they are smaller than 19ga, or 2 if they are 18 or larger.