ORIGINAL: rmh
Sometime when you are bored-
rig up a battery and 3 to four amp load at say - 6 to 7 volts ,with your favorite servo leads - in normal and or hd wire
check the connections for warmth every 5. minutes - and disconnect any hot ones .' the wires even lightweight ones - are seldom the problem but the connections can be huge resistance points.
small wires CAN create a resistance issue but the connectors we all use -are the real issue.
As you know, you only have to measure the voltage across that connector to see how much power is being dissipated in the connection. Once they heat up to the point of a person being able feel the heat through the plastic housing, the connectors are pretty much toast. Some won't even tolerate 3A! Better ones will tolerate 4A with no problems though they're pretty much maxed out at that current.