Type NM-B Cable, Nonmetallic-Sheathed Cable, Romex Wire, UL Wire

OVERVIEW

SPECIFICATIONS

CONSTRUCTION

PARAMETER

Application

Type NM-B (nonmetallic-sheathed cable) may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C (with ampacity limited to that for 60°C conductors) as specified in the 2011 National Electrical Code. NM-B cable is primarily used in residential wiring as branch circuits for outlets, switches, and other loads. NM-B cable may be run in air voids of masonry block or tile walls where such walls are not wet or damp locations. Voltage rating for NM-B cable is 600 volts.

Standards:

Type NM-B cable complies with:
• ASTM B-3 and B-8
• UL Standard 83
• UL Standard 719
• Federal Specification A-A-59544
• National Electrical Code, NFPA 70. 2011 Edition
• RoHS/ REACH

Features

Nonmetallic-Sheathed Cable. 600 Volt.
Copper Conductors. Color-Coded Jacket.
Four Conductor Available With Two Neutrals.

Specifications

ROHS

Low Voltage

Working Temperature 90℃

Flame Retardant

construction

Type NM-B cable is manufactured as 2, 3, or 4 conductor cable, with a bare ground wire. Copper conductors are annealed (soft) copper. Stranded conductors are compressed stranded. Conductor insulation is 90°C-rated polyvinyl chloride (PVC), nylon jacketed. Type NM-B is designed for Easier Pulling, Resulting in Easier installation. The cable jacket is color-coded for quick size identification; White - 14 AWG, Yellow - 12 AWG, Orange - 10 AWG, and Black - 8 AWG and 6 AWG.

1. Jacket:

PVC, flame retardant. 90℃.

2. Assembly:

the conductor laid parallel, with kraft paper tape wrapped.

3. Wrapping:

kraft paper tape over the grounding conductor

4. Core Jacket:

Nylon

5. Insulation:

PVC, type THHN.

6. Conductor

annealed copper, comply to ASTM B3

parameter

Type NM-B Cable

Conductor				Ground Wire		Approx. Cable Dimension (mils)	Approx. Net Weight per 1000' (lbs)	Allowable Ampacity+
Size (AWG)	Number of Conductors	Number of Strands	Insulation Thickness (mils)	Size (AWG)	Number of Strands	Approx. Cable Dimension (mils)	Approx. Net Weight per 1000' (lbs)	Allowable Ampacity+
TWO CONDUCTOR
14	2	1	19	14	1	360X162	57	15
12	2	1	19	12	1	410X179	82	20
10	2	1	24	10	1	494X210	124	30
8	2	7	35	10	1	612X269	186	40
6	2	7	35	10	1	683X304	225	55
THREE CONDUCTOR
14	3	1	19	14	1	307	74	15
12	3	1	19	12	1	347	107	20
10	3	1	24	10	1	422	164	30
8	3	7	35	10	1	565	253	40
6	3	7	35	10	1	650	357	55
4	3	7	46	8	1	814	560	70
2	3	7	46	8	1	952	816	95
FOUR CONDUCTOR
14	2/2	1*	19	14	1	336	91	15
14	4	1**	19	14	1	336	91	15
12	2/2	1*	19	12	1	381	132	20
12	4	1**	19	12	1	381	132	20
10	4	1	24	10	1	465	201	30

Other Related Products

Non Metallic

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