WIRE GAUGE CHARTS
7 wire in mm
Thickness: 3.66 mm diameter (0.144 inches), 10.55 mm² cross-section of solid copper.
Specifications
- Diameter
- 3.66 mm
- Diameter (imperial)
- 0.144 in
- Cross-section
- 10.55 mm²
- Area (kcmil)
- 20.8
- Copper resistance
- 0.498 Ω/1000 ft
- Copper resistance (metric)
- 1.63 Ω/km
- Copper weight
- 94.5 g/m
- Free-air rating (typical)
- 226 A
Nearest metric sizes
10.55 mm² does not match a standard metric cable size exactly. The closest conventional cross-sections are6 mm², 10 mm² and 16 mm²— engineers round this wire up (larger cross-section) for ampacity, or accept the raw equality for signal work.
One gauge away:8 · thinner6 · thickerFull chart →
Frequently asked questions
Is 7 gauge wire thick or thin?
7 gauge wire is 3.66 mm in diameter. On the AWG scale a lower number means a thicker wire, so 7 AWG sits toward the thick end, where service and feeder wires live.
What diameter is 7 wire in millimeters?
7 gauge wire is 3.66 mm (0.144 in) in diameter, with a solid-conductor cross-section of 10.55 mm².