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Re: 20 AMP power to motor controllers?
Quote:
Originally Posted by Fletch1373
I've been unable to find a rule this year that specifies what motors are allowed to be connected through what breakers, but historically CIMs have required 40A breakers. This is due to it having a much higher stall current(in the 60A range if memory serves).
If you do decide to put a CIM on a 20A breaker, just remember that the breaker is there to protect the wire, but there's still a chance of the high current burning out the wire before the breaker trips if the motor stalls. The AWG requirement in table 4-3 is just a minimum, so feel free to go higher in this case.
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As far as I know, there hasn't been a rule limiting certain motors to breaker sizes. The rules dictate the minimum wire gage that can be connected to a certain size breaker.
The CIM's stall current is 133A at 12V.
__________________
2013: Waterford Finalist, Livonia Winner, MSC Quarterfinalist, Curie Division
2012: Waterford, Northville, Livonia
2011: Waterford Finalist, Livonia
2010: Ann Arbor Rookie Inspiration Award, Troy
Mechanical Engineering Student,
Michigan Technological University
Last edited by Chris_Ely : 31-01-2015 at 18:02.
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