FMC Conduit Fill Calculator - NEC Compliant
Calculate FMC (Flexible Metal Conduit) conduit fill percentages with our free, NEC-compliant calculator. FMC conduit provides excellent flexibility for installations requiring movement or vibration absorption, commonly used in motor connections and tight spaces.
FMC offers outstanding flexibility while maintaining strong physical protection for electrical conductors. It's ideal for connections to motors, transformers, and other equipment subject to vibration or where routing around obstacles is needed.
Input Parameters
Conductors
Results
Visual Representation
Enter conduit and wire information to see results
NEC Fill Requirements
According to NEC Chapter 9, Table 1: 1 conductor = 53% max, 2 conductors = 31% max, 3+ conductors = 40% max, Nipples = 60% max
FMC Conduit Features & Benefits
Key Features:
- Flexible for tight bends and vibration absorption
- Easy installation in hard-to-reach areas
- Excellent for motor and equipment connections
- Available in sizes from 3/8" to 4"
Common Applications:
- Motor and equipment connections
- Machinery wiring with vibration
- Tight spaces requiring flexibility
- Commercial and industrial installations
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