On 9/27/2010 2:05 AM, Cobra wrote:
Really do need to know what gauge wire to use fore the relays as well
as power leads to batteries connecting to the speed controller.
If you're running scooter motors @ 24v then 10-12 AWG is a good choice
if the cable has the normal number of strands (e.g., 20 strands). If
you use cable with more strands (e.g., 40+ strands, sometimes called
"monster" cable in the audio world), then you can get by with 12-14
gauge. I prefer 10 AWG, 40+ stranded wire that is "tinned" (available
in any boating supply store) because it is designed to carry lots of
current and holds up very well in high moisture environments.
Keep in mind, the cables running from the batteries to the controller
carry twice as much current as the cables running from the controller to
the individual motors, so they should be thicker or doubled-up. Also,
the incremental cost of thicker cable is relatively zero when compared
to the cost of repairing the fire damage caused if the wire becomes a
fuse during the battle :-)
Frank P.
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