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Unread 27-03-2011, 22:22
theprgramerdude theprgramerdude is offline
WPI Freshman
AKA: Alex
FRC #2503 (Warrior Robotics)
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Join Date: Feb 2010
Rookie Year: 2008
Location: Brainerd, Minnesota
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Re: Popped Main Breaker

Quote:
Originally Posted by Mark Sheridan View Post
It can be pretty easy to pop the main breaker if you chose the wrong gear ratio for your motors. Our robot runs 8 motors this year, if we managed to choose the gear wrong ratios for all of them, we could draw as much 210 amps of power without tripping any of the individual motor breakers. That would defiantly trip the main breaker.

The last time we tripped a breaker probably was in 2003 from repeated heavy loads from ramming other robots on the ramp.
That is highly, highly, highly unlikely to pop your main breaker just by driving around. These breakers are short-circuit preventers for the battery, and not much else besides an on/off switch. Your system will brown-out before you could possibly throw the breaker by normal use. The breaker should be capable of doing at least 10-15 seconds at 210 amps, if not more.
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