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Unread 17-02-2010, 12:48
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FRC #2177 (The Robettes)
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Re: Using 9 motors on the robot

Quote:
Originally Posted by Jon236 View Post
Look at the power requirements for the motors. Only the CIMS and the Fisher-Price motors require 40 Amp breakers; the rest can use the 30 Amp connections.

Good luck!
Not quite true, this year.

Quote:
<R55>
A. Each CIM motor and Fisher-Price motor must be connected to one and only one approved speed controller. These motors must not be connected to relay modules.
Quote:
<R46>
A. Each speed controller branch circuit must be protected by one and only one 20-amp, 30-amp, or 40-amp circuit breaker on the Power Distribution Board. No other electrical load can be connected to the breaker supplying this circuit.
That being said... those two motors are the most likely to need a 40A breaker, as they can exceed 20/30A breakers safely - especially the CIM's. The other motors you can use smaller breakers without worrying too much about tripping them under normal, safe use.