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What is the difference between NM-cable and NMC-cable?

Wednesday, November 16, 2022

Both NM-cable and NMC-cable are an assembly of two or more electrical conductors in a flexible non-metallic sheathing, but NM-cable is only approved for dry locations. The sheathing of NMC-cable is corrosion-resistant, so it  is rated for installion in dry, damp, wet, or corrosive locations. 

• • • • • • • • • • • • • • • • • • • • • • • • • •

Here’s links to some of our other articles about NM-CABLE (ROMEX®):

What is the maximum spacing requirement for securing NM-cable (nonmetallic-sheathed cable)? 

Is it alright to just put wire nuts on the end of unused or abandoned NM-cable or wiring? 

Can NM-cable (Romex®) be used to make a cord and plug to connect an appliance?

What is the color code for NM cable (Romex®) sheathing?

What are the code requirements for NM-cable (nonmetallic-sheathed cable or Romex®) in an attic? 

Can you run exposed NM-cable (Romex) in a garage? 

• Can NM-cable (Romex®) lay on the ground in a crawl space or unfinished basement?

What are the requirements for NM-cables entering an electric panel box? 

• How many NM-cables allowed in an NM-connector clamp?

 

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