4/3 MC Copper Cable, PVC jacket

Metal clad cable with THHN conductors and a green ground inside an interlocked aluminum armor, for feeders and branch circuits without conduit.

From$7.57/ft

Ships by Thu, Oct 8

For an order placed now. Orders after 12 PM ET, and on weekends and holidays, count from the next business day.

You get a tracking number by email the day it ships.

Free UPS Ground shipping from $499 to the lower 48. A reel over 150 lb ships by freight, charged in the cart.

Cut wire is final sale. Uncut spools can come back within 30 days for a 15 percent restocking fee. Returns policy

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Ampacity	85 A (NEC Table 310.16, 75 C column)
Largest breaker	85 A, or the next standard size up where NEC 240.4(B) allows. With 60 C rated terminals (the NEC 110.14(C) default at 100 A or less unless the equipment is marked 75 C) it is 70 A.
Voltage drop at 100 ft	5.24 V, 2.2 percent at 85 A and 240 V single phase
Run length for 3 percent drop	About 135 ft one way at 85 A and 240 V
Outside diameter	0.95 in

What breaker can 4/3 MC Copper Cable, PVC jacket go on?: Its ampacity is 85 A (75 C column of NEC Table 310.16). The breaker can be that size, or the next standard size up where NEC 240.4(B) allows it. Derate first for more than three current-carrying conductors or high ambient heat. With 60 C rated terminals (the NEC 110.14(C) default at 100 A or less unless the equipment is marked 75 C) it is 70 A.
How far can I run it before voltage drop is a problem?: At 85 A on a 240 V single phase circuit, about 135 ft one way keeps the drop at 3 percent, the figure an informational note to NEC 210.19(A) suggests for branch circuits. Try other loads in the voltage drop calculator.
Can I buy it by the foot?: It is sold on 250, 500, 1,000 ft spools or coils.

Type	MC cable
Gauge	4/3
Conductors	3
Conductor	copper
Stranding	stranded
Nominal O.D.	0.95 in
Ampacity, NEC Table 310.16, 75 C column	85 A
Standard spools	250, 500, 1,000 ft
Ships in	1 to 2 business days from the order day

Insulation, ratings, listing and weight are confirmed from the manufacturer's sheet with your quote.

Spec sheet on request.

What is the smallest cut?: 25 ft for this product, in whole feet, up to 5,000 ft per row. Each length ships on its own coil.
Can I return cut wire?: No. Cut wire is final sale. Uncut, unopened spools and boxes can come back within 30 days for a 15 percent restocking fee.
When does it ship?: The ship dates beside Add to cart are for this product and count business days in Eastern time. You get a tracking number by email the day it ships.

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