2023-10-17
The number of squares needed for an EV (electric vehicle) charging cable depends on the current rating or amperage of the charging cable. The term "squares" is often used to refer to the cross-sectional area of the cable, typically measured in square millimeters (mm²) or square American Wire Gauge (AWG). The appropriate cable size will depend on the maximum current the cable needs to carry.
Different charging levels require different cable sizes. Here are some common cable sizes based on charging levels:
Level 1 Charging (120V, 15-20 Amps): Typically, a 14 AWG cable (2.08 mm²) is suitable for Level 1 charging, which provides slower charging speeds and is commonly used with a standard household outlet.
Level 2 Charging (240V, 30-50 Amps): For Level 2 charging, the cable size required will depend on the maximum current rating of your charging equipment. Common cable sizes include 10 AWG (5.26 mm²) for 30 amps, 8 AWG (8.37 mm²) for 40 amps, and 6 AWG (13.30 mm²) for 50 amps.
Level 3 Charging (DC Fast Charging): Level 3 charging stations often have built-in cables and connectors, and they require significantly larger cables due to the high power and fast charging capabilities. The cable sizes for Level 3 charging can vary depending on the specific charging station and the power rating it supports.
It's important to consult the manufacturer's specifications or guidelines for the EV charging cable you are using to determine the appropriate cable size. Additionally, local electrical codes and regulations may also provide guidelines for the minimum cable size required for EV charging installations.
If you are unsure about the cable size or installation requirements, it's recommended to consult with a qualified electrician or contact the manufacturer of your EV charging equipment for specific recommendations based on your needs and local regulations.