Name: Armorlite® Type MC THHN/THWN Intermediate Size Copper Conductor 277/480V Colors
Brand: Southwire
Rating: 5 (1 reviews)

Products > Infrastructure Products > 600V MC > SPEC60132

SPEC 60132

Armorlite® Type MC THHN/THWN Intermediate Size Copper Conductor 277/480V Colors

Copper THHN/THWN Insulated Singles. Green Insulated Copper Grounding Conductor. UL Listed. 600 Volts Rated VW-1. Lightweight Aluminum Interlocked Armor.

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Construction:

Conductor:19 strands class C compressed copper per ASTM B3 and ASTM B8
Insulation:All phases are insulated with Polyvinyl Chloride with Nylon Sheath Type THHN/THWN
Ground:Green insulated ground. Polyvinyl Chloride with Nylon Sheath Type THHN/THWN
Binder:Mylar tape
Armor:Aluminum Interlocked Armor

Applications and Features:

Southwire Armorlite® Type MC Cable is suitable for use as follows:

Branch, feeder and service power distribution in commercial, industrial, institutional, and multi-residential buildings.

Fished or embedded in plaster.

Concealed or exposed installations.

Environmental air-handling spaces per NEC 300.22 (C).

Places of Assembly per NEC 518.4 and theaters per NEC 520.5.

Installation in cable tray and approved raceways.

Under raised floors for information technology equipment conductors and cables per NEC Article 645

Class I Div. 2, Class II Div 2, & Class III Div. 1 Hazardous Locations.

Binder tape with print legend wrapped around assembly.

Type THHN/THWN rated 90ºC Dry.

Southwire Armorlite® Type MC Cable - meets or exceeds the following requirements:

UL Online Product Guide Info - Metal-Clad Cable (PJAZ) ( www.ul.com )

Federal Specification A-A59544 (formerly J-C-30B)

NFPA 70 (National Electrical Code), Article 330

Listed for use in UL 1, 2 and 3 Hour Through Penetration Firestop Systems

Specifications:

ASTM B3 Standard Specification for Soft or Annealed Copper Wire

ASTM B8 Concentric-Lay-Stranded Copper Conductors

UL 83 Thermoplastic Insulated Wires and Cables

UL 1569 Metal-Clad Cables

UL 1479 Standard for Safety Fire Tests of Penetration Firestops

UL 1685 FT4 Vertical-Tray Fire Propagation and Smoke Release Test

IEEE 1202 FT4 Flame Test (70,000) BTU/hr Vertical Tray Test

REACH/RoHS-2 (Chemical Limit) Compliant

Buy American: Compliant with Buy American Requirements, found in 49 U.S.C. § 5323(j); specify “Made in the USA Only!” when ordering to ensure your project receives American made products.

VW-1 (Vertical-Wire) Flame Test

Sample Print Legend:

E96627 MASTER-DESIGN {UL} TYPE MC AWG XXTHHN OR THWN CDRS FOR USE IN CABLE TRAYS 600 VOLTS

Table 1 – Weights and Measurements

Stock Number	Cond. Size	Conductor Number	Color	Diameter Over Conductor	Conductor Stranding	Insulation Thickness	Ground Size x Num	Diameter Over Armor	Overall Weight
	AWG/Kcmil			inch		mils	No. x AWG	inch	lbs/1000ft
551172^◊	8	2	BN/GY	0.143	19	35	1 x 10	0.653	221
551174^◊	8	2	YW/GY	0.143	19	35	1 x 10	0.653	221
551173^◊	8	2	OE/GY	0.143	19	35	1 x 10	0.653	221
551178^◊	8	3	BN/OE/GY	0.143	19	35	1 x 10	0.764	320
551179^◊	8	3	BN/YW/GY	0.143	19	35	1 x 10	0.730	304
550375^◊	6	2	BN/GY	0.179	19	35	1 x 8	0.789	349
561235^◊	6	2	YW/GY	0.179	19	35	1 x 8	0.789	349
553541^◊	6	3	BN/OE/GY	0.179	19	35	1 x 8	0.858	455
556046^◊	6	3	BN/OE/YW	0.179	19	35	1 x 8	0.858	455
552578^◊	6	4	BN/OE/YW/GY	0.179	19	35	1 x 8	0.932	562
556478^◊	4	3	BN/OE/YW	0.226	19	50	1 x 8	0.983	643
554580^◊	4	4	BN/OE/YW/GY	0.226	19	50	1 x 8	1.085	823
554387^◊	2	3	BN/OE/YW	0.286	19	50	1 x 6	1.032	919
580740^◊	2	4	BN/OE/YW/GY	0.286	19	50	1 x 6	1.238	1197

All dimensions are nominal and subject to normal manufacturing tolerances

◊ Cable marked with this symbol is a standard stock item

Note: Conductor number = number of phase conductors plus neutral. Does not include green ground.

Table 2 – Electrical and Engineering Data

Stock Number	Cond. Size	Min. Bend Radius*	Max Pull Tension	DC Resistance at 25°C	AC Resistance at 75°C	Allowable Ampacity Raceway 60°C^†	Allowable Ampacity Raceway 75°C^†	Allowable Ampacity Raceway 90°C^†
	AWG/Kcmil	Inches	Lbs	Ω/1000ft	Ω/1000ft	Amp	Amp	Amp
551172◊	8	4.5	264	0.653	0.786	40	50	55
551174◊	8	4.5	264	0.653	0.786	40	50	55
551173◊	8	4.5	264	0.653	0.786	40	50	55
551178◊	8	5.3	396	0.653	0.786	40	50	55
551179◊	8	5.1	396	0.653	0.786	40	50	55
550375◊	6	5.5	419	0.411	0.495	55	65	75
561235◊	6	5.5	419	0.411	0.495	55	65	75
553541◊	6	6.0	629	0.411	0.495	55	65	75
556046◊	6	6.0	629	0.411	0.495	55	65	75
552578◊	6	6.5	839	0.411	0.495	44	52	60
556478◊	4	6.8	1001	0.258	0.310	70	85	95
554580◊	4	7.5	1335	0.258	0.310	56	68	76
554387◊	2	7.2	1592	0.162	0.195	95	115	130
580740◊	2	8.6	2123	0.162	0.195	76	92	104

^† Ampacities have been adjusted for more than Three Current-Carrying Conductors
^† Ampacities based upon 2023 NEC Table 310.16 and do not take into account the overcurrent protection limitations in NEC 240.4(D) of 15 Amps for 14 AWG CU, 20 Amps for 12 AWG CU, and 30 Amps for 10 AWG CU (independent of the conductor temperature rating and stranding). Also, see NEC sections 310.15 and 110.14(C) for additional requirements.

Revision: 3.0.00C