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Romex is a manufactures name for NMD 7 and 90. Another manufacturer's named their product Loomex. On NMD 7 the insulation factor was 75 degrees C, later the manufactures came out with NMD 90 which has an insulation factor of 90 degrees C. NMD stands for Non Metallic for Dry locations. Colour coding started a few years ago. It helps the electrical inspector to make sure the correct circuits are going to the correct places.

White PVC jacket is for 2 & 3C #14 for General Application

Blue PVC jacket is for 2C#14 for Bedroom Outlets terminating at Arc Fault Circuit Interrupters (AFCI)

Yellow PVC jacket is for #12 AWG

Orange PVC jacket is for #10 AWG

White PVC jacket is for #8 AWG and larger size wires

Red PVC jacket is designed for use on 240-volt systems where there is no neutral

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Related Questions

What are the standard Romex wire colors used in electrical wiring?

The standard Romex wire colors used in electrical wiring are black, white, and bare copper.


What was used before romex wire became available?

Before Romex wire became available, cloth-covered wire, knob-and-tube wiring, and armored cable (BX) were commonly used for electrical wiring in residential buildings.


What are the differences between THHN and Romex wires, and which one is more suitable for residential electrical wiring?

THHN wire is a single-conductor wire used for commercial and industrial applications, while Romex wire is a type of electrical cable with multiple conductors used in residential settings. Romex wire is more suitable for residential electrical wiring due to its ease of installation and protection against damage.


Is that possible to run romex wire to the under ground basement?

No, it is not possible to run Romex wire directly underground in a basement. Romex wire is not rated for direct burial underground and should not be used in this application. Instead, you should use UF-B (underground feeder) cable or conduit with appropriate wiring for underground installations.


Do you need 3-wire romex to feed bedroom ceiling box by electrical code?

No, you can feed it with a 2 wire Romex + ground. It depends on what is mounted on the ceiling. If it is just a light all you need is 2 wire + ground Romex. However if it is a fan/light and you want to control each one independant of the other you will need to use 3 wire Romex + ground. This is of course if you have 2 seperate switches. You would then connect the red wire to the blue light wire and the black wire to the black fan wire. If you use 2 wire Romex just connect the blue and black fan/light wire to the black wire in the ceiling box.


What wire is commonly used in house wiring?

Romex, All you have to do is go to a hardware store and tell them you need house wire. It comes in a box. I am not sure how many feet. If you are just looking for the gauge, they will know that too.


What year did romex wire come out?

The exact year that Romex Wire came out is not listed on their website. However, they do say that they have been selling the wire for over 88 years. I have found the year 1926


Can you mix aluminum wire with romex in a junction box?

No, do not mix aluminum wire with copper wire.


What gauge romex for outlets?

Romex is a manufacturer's wire cable trade name, the 10 refers to the size of the wire inside the cable set. A #10 AWG copper conductor with an insulation factor of 90 degrees C is rated for 30 amps.


What type of wiring should be used for a 50 amp circuit, specifically considering the keyword "Romex"?

For a 50 amp circuit, 6-gauge copper wire should be used, typically in a type of wiring called "Romex." Romex is a brand of non-metallic sheathed cable commonly used for residential electrical wiring.


Can you run Romex through a wire mold?

The key is that you don't want to cause over-heating in wire. The answer is you can probably do what you want unless it involves high current and a small cross section in wire mold such that the Romex could generate too much heat. You could always strip out the wires inside the Romex and just run them in the wire mold.


Can BX connectors be used with romex wire?

They can as they will support the wire into the box. The deciding factor should be the cost. A BX connector costs about four times the price of a romex connector. Also to keep in mind is that most junction boxes these days have their own built in clamps.