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Unread 31-03-2010, 15:44
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: 30a breaker for 40a spot on pdb

Bruce,
There was another team in Milwaukee that also tripped the main breaker. They thought is was protected as well but what we found was a small crack in the case. The slight misalignment was enough to cause the breaker to let go. There is another known issue with the breaker. A few over the years have shown up with manufacturing defect. A simple tap on the red button is sufficient to trip the breaker. The test is to tap with your finger and see if it fails. Over the last four years I think I have seen a total of less than ten.
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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.