IMC Conduit Fill Calculator - NEC Compliant

Calculate IMC (Intermediate Metal Conduit) conduit fill percentages with our free, NEC-compliant calculator. IMC conduit offers a perfect balance between strength and weight, providing superior protection for electrical installations at a lower cost than RMC.

IMC combines the strength of rigid conduit with lighter weight and easier installation. It's the preferred choice for many commercial and industrial installations where strong mechanical protection is needed without the weight and cost of RMC.

Input Parameters

Conductors

Results

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

IMC Conduit Features & Benefits

Key Features:

  • Lighter weight than RMC with comparable strength
  • Thinner walls mean larger interior space
  • Cost-effective alternative to RMC
  • Available in sizes from 1/2" to 4"

Common Applications:

  • Commercial building installations
  • Industrial facilities
  • Exposed locations requiring protection
  • Both indoor and outdoor installations

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Professional electrical conduit fill calculations per NEC standards

© 2024 Conduit Fill Calculator. All rights reserved.

Professional electrical conduit fill calculations per NEC standards