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Unread 22-01-2006, 08:32
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1996
Location: Wheeling, IL
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Re: Globe motor to spike controller

Guys,
You are missing the point on using circuit breakers on the robot electrical vs. the protection provided by a fuse in the Spike. The circuit breakers are chosen with minimum rating for protecting the wiring. (See R82, 83, 84) A 20 amp circuit breaker will keep a #18 from setting itself on fire in the event of a short. The 20 amp fuse in the Spike protects the contacts in the relay from destruction but does not protect the wiring since it is at the end of a wire run. Since the compressor draws more than 20 amps during start but has a run current much lower, IFI and First have determined that the fuse may be replaced by an auto reset circuit breaker for the compressor control only.
The globe motor can be used with a Spike with the understanding that you have no speed control. Only one motor per Spike, please.
All Chalupas (large and small) and all FP motors must be connected to Victors per R87.
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Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.