I'll bet my other good screwdriver that that same inspector doesn't give a rats behind about any code reference. Why would we even let what some misinformed inspector in Podunk might think be a matter of conversation?
White 12 AWG? Yellow 10 AWG? Orange 8 AWG? Black 6 AWG? Jim W in Tampa Senior Member. Location Tampa Florida. Location Logan, Utah. They couldn't come up with another color for 6? DanZ Senior Member. Location Simi Valley, CA. I like the color coding, it sure makes doing tracs easier.
I used to hate it because the contractor and the GC always wanted to walk with you and you get distracted and next thing you know you're almost done when you realize that you forgot to check the wire size on a coupe of circuits and you have to go back.
New bumper sticker. Location Illinois Occupation retired electrician. A manufacturer might have a good market if he would make yellow jacketed In nonmetallic sheathed cable NM now purchased used for residential and commercial wiring, the outer sheathing color indicates the wire gauge or size and amperage rating of the wire within. However, older installed cable may not have this color coding.
Before about , most NM cable had a white outer jacket, but since , most NM-B cable has been jacketed with a vinyl outer insulation that is colored to identify it for both consumers and inspectors.
This color coding of the wire sheath is strictly voluntary, but most manufacturers adhere to the color scheme. The five basic color schemes used for the NM cable in residential construction are white, yellow, orange, black, and gray. These colors are seen in the solid vinyl outer jacket that enclose the individual conductors within the cable and are easily identified at a glance.
Be aware that black is used as a color for two different wire gauges, so some care is needed when interpreting black cable. Cable with white sheathing houses gauge wire. This type of wire is used for amp circuits in your home. General lighting circuits are normally the primary use of amp circuits wired with gauge cable, although many homes are now wiring these circuits as amp circuits. Yellow color-coded cable sheathing encloses gauge wires. Yellow gauge cable is typically used for amp circuits that power general household outlets used for a variety of plug-in appliances.
Dedicated appliance circuits also call for amp circuits in most cases. The orange-colored wire sheathing is set aside for gauge wire. It is able to handle amp circuit loads.
These loads include air conditioners, water heater feeds, and any other amp loads. Black-sheathed cable is used for both 6- and 8-gauge wire. The 6-gauge wire is better for a feeding a sub panel, an electric range, or a double oven, depending on the amperage rating listed on the appliance. If you need black cable, make sure to read the sheathing and packaging carefully to determine if you are buying 6- or 8-gauge wire. Gray-colored sheathing is used to designate cable intended for underground installation.
Type NM-B cable first began to be manufactured with color-coded jackets in to aid in identification of the conductor size. The color code that was introduced, which continues to be used today is as follows:. This color coding system was developed to aid those who sell, install, and inspect Type NM-B cable so that the cable size can easily be identified, to reduce mistakes resulting from the use of an incorrect conductor size. Sign up to join this community. The best answers are voted up and rise to the top.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Ask Question. Asked 1 year, 1 month ago. Active 1 year, 1 month ago. Viewed times. My question is two-fold: When did this become standard in the US?
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