6 AWG Wire Ampacity

Heavy-duty wire for 50-60 amp circuits: sub-panels, electric ranges, hot tubs, and large EV chargers.

6 AWG Quick Specifications

65A
Copper Ampacity
50A
Aluminum Ampacity
13.30
mm² Area
4.115
mm Diameter

Complete 6 AWG Specifications

Wire Gauge 6 AWG
Diameter (inches) 0.162 in
Diameter (mm) 4.115 mm
Cross-sectional Area 13.30 mm² (26,240 circular mils)
Copper Resistance 1.296 Ω/1000ft (4.25 Ω/km) @ 20°C
Copper Ampacity (60°C) 55A
Copper Ampacity (75°C) 65A
Copper Ampacity (90°C) 75A
Max Circuit Breaker 50-60A (depending on installation)

Common Applications for 6 AWG Wire

Sub-Panel Feeders

60A sub-panels for garages, workshops, or home additions. Provides ample capacity for multiple circuits.

Electric Ranges

Standard electric ranges and ovens on 50A circuits. Most common wire size for kitchen cooking appliances.

Hot Tubs & Spas

Full-size hot tubs typically require 50-60A circuits. GFCI protection required.

Large EV Chargers

50A EV chargers (Tesla Wall Connector at 48A, ChargePoint Flex). Maximum residential charging speed.

Welders

220V welders rated up to 50A. Common in home workshops and garages.

RV 50A Service

50A RV outlets (NEMA 14-50) for larger motorhomes and fifth wheels.

6 AWG vs 8 AWG: Which to Use?

Feature 6 AWG 8 AWG
Max Circuit Breaker 60A 40-50A
Copper Ampacity 65A 50A
Typical Uses Ranges, hot tubs, sub-panels EV chargers, central AC
Cost (per 100ft) ~$150-200 ~$100-140
Voltage Drop (50ft, 40A) 2.1V (0.9%) 2.5V (1.0%)

Pro Tip: For EV chargers with long runs (>50 feet), consider using 6 AWG even on 40A circuits to minimize voltage drop and improve charging efficiency.

6 AWG Voltage Drop Calculator

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