These are the default Ampacities of the solid 4 gauge copper and aluminum wires, and these values don't include any safety margin - time for "Rule 80%". This 15-20 Amps difference is a serious difference, showing why the copper is preferred choice as wire material over aluminum, at least for the applications where wire weight is not that important. On the other hand, the Ampacities of the 4 gauge solid aluminum wire are: If we check the Ampacity of the 4 gauge solid copper wire, then we can see that the actual Ampacity depends on the maximum allowed surface temperature: So, for many applications, copper 4 gauge wires are the preferred choice over aluminum 4 gauge wires. 4 AWG Aluminum WireĪs a wire material, aluminum is lighter and cheaper, but it also features larger electric resistance than copper.Īlso, as the aluminum wire warms up, it expands more than the copper wire. However, solid 5-6 mm copper wire is not easy to work with, making this 12-14% difference mostly negligible for many applications (for example, welding wire). Since stranded wires feature air gaps between the individual strands (~20-25% of the stranded wire is actually - air), the diameter of the stranded wires with the same Ampacity (wire current carrying ability) is ~12-14% larger than the diameter of the solid wire (~6 mm on average). The physical dimensions of the solid copper 4 gauge wire are:
*Data provided on this page is subject to change based on different manufacturers variances.4 Gauge/AWG Wire: 4/2 Wire, 4/3 Wire, and 4/4 WireĤ gauge wires are relatively thick wires that are seldom used at home and residential electrical installations but may be quite common in light industrial applications and applications that require currents in the 50-60 Amps range.Ĥ gauge wires differ in wire material, construction, Ampacity, and a few other details, making it very important to choose the very best 4 gauge wire carefully.Īmerican Wire Gauge (AWG) 4 wire may be made of solid or stranded wire, made of pure copper, aluminum, Copper Clad Aluminum (CCA), and a few other materials that are very rarely used (for example, oxygen-free copper and similar). Outside Diameter: 1.245 inches / 31.62 mm Nominal Insulation Thickness: 0.060 inches / 1.52 mm Jackets are reinforced by a braid or serve of synthetic material.
#4 AWG AMPACITY PORTABLE#
NEMA WC-58 - Portable and Power Feeder Cables for Use in Mines and Similar Locationsįully annealed stranded bare copper per ASTM B-172.ĬPE rubber jacket.
Conductors are manufactured in accordance with ASTM and B-172 Also suitable for mobile and portable electrical equipment.
#4 AWG AMPACITY GENERATOR#
Type W Portable Power Cable is suitable for use in industrial and light-to-medium mining applications, heavy-duty service, temporary power supply cables, motor, battery and generator leads. Enter the desired footage in the QTY box. 2000V, 90☌ (-40☌), Oil and Sunlight Resistant.Ĭut to length - sold by the foot.
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