mc cable and marking?

Status
Not open for further replies.
raider1

raider1

Senior Member
Staff member
Location
Logan, Utah
I am just wondering how other people are identifying the conductors of MC cable, where there is 480/277 and 208/120 voltages present at the building.

Are you phase taping the different systems or using other means?

Just curious as I have not done a lot of wiring outside of my little area.

Any thoughts would be appreciated.

Chris
 
Re: mc cable and marking?

We order it in Brown Orange Yellow Grey or Black Red Blue White colors...with green for a ground, of course.
 
Re: mc cable and marking?

We spray paint the box covers and label them, the local inspectors are on board with this.

FWIW the 2005 NEC does not require that you identify the conductors by phase, only by system.

You could now mark all your 208Y/120 phases black and all your 480Y/277 phases red.
 
Re: mc cable and marking?

Originally posted by paul:
We order it in Brown Orange Yellow Grey or Black Red Blue White colors...with green for a ground, of course.
Click to expand...
We do the same thing.

For larger conductors, we - "usually" - order them colored as well.
 
Re: mc cable and marking?

For larger conductors, we - "usually" - order them colored as well.
Click to expand...
wish that would catch on in this area....mostly tape here..the colored conductors sure make a nice looking job
 
Re: mc cable and marking?

Thanks for all the responses.

Here I see tape on the 277/480v conductors. The local supply houses are pretty small and can only stock a limited supply of material. They don't stock MC in anything but black,red,blue,white and green color. I had been wondering if other areas had a brown,yellow,purple,grey and green colored MC available or not.

Chris
 
Re: mc cable and marking?

Originally posted by raider1:
Thanks for all the responses.

Here I see tape on the 277/480v conductors. The local supply houses are pretty small and can only stock a limited supply of material. They don't stock MC in anything but black,red,blue,white and green color. I had been wondering if other areas had a brown,yellow,purple,grey and green colored MC available or not.

Chris
Click to expand...
In my area, we have a few large (~20 branches) supply store chains that carry a vast array of MC and AC cables, including all the 480 volts colors. It's quite amazing to walk through their warehouses and see the stuff they carry.
:cool:
 
Re: mc cable and marking?

Originally posted by iwire:

FWIW the 2005 NEC does not require that you identify the conductors by phase, only by system.

You could now mark all your 208Y/120 phases black and all your 480Y/277 phases red.
Click to expand...
I was under the impression that identifying conductors by colors was an recommended and not required practice.

This came up today at our company meeting.

What are the requirements for identifying conductors and where in the code is that stated.

I am all for using conductor coloring to indicate the circuit voltage. But, I still would end up buying that equipment if I didn't put a meter on it before I energised the equipment.
 
Status
Not open for further replies.
Top