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Unread 17-02-2015, 11:17
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Jon Stratis Jon Stratis is offline
Mentor, LRI, MN RPC
FRC #2177 (The Robettes)
Team Role: Mentor
 
Join Date: Feb 2007
Rookie Year: 2006
Location: Minnesota
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Re: voltage loss over long runs

In 2008 we saw a significant voltage drop to the motors on the ends of our elevator. There are really two days around this... Go to a larger wire (see Al's post) or double up your wire (two equivalent resistors in parallel cut the voltage drop in half). At the time, we had plenty of the wire we were using, but would have had to buy thicker wire, and didn't want to sacrifice flexibility with the thicker wire (or pay a lot more for high flex wire). So, we doubled up the wire to each motor. Each Victor had 2 positive and two negative wires going from it, and they were then rejoined when they went into the motor. The inspector we got that year was a bit confused by it, and had to call Al over to check it out and make sure it was legal. As it was still on controller powering one motor, it was.
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