Cable Fill Ratio-NEC
Cable Fill Ratio-NEC
(OP)
I have a question regarding the NEC and the conduit fill ratio. The NEC recommends the cable fill ratio remains under 40% for two or more cables. What is the reasoning to limit the allowable fill ratio to 40%? What problems could occur if the 40% fill ratio is exceeded?






RE: Cable Fill Ratio-NEC
A good example is the four 90° bend rule. Some pulls are impossible to pull with only 180° worth of bends and others can pull just fine at 720°. But 360° is the rule.
RE: Cable Fill Ratio-NEC
RE: Cable Fill Ratio-NEC
Don Phillips
http://worthingtonengineering.com
RE: Cable Fill Ratio-NEC