Charging Cable and Extension Cords

The yellow 120 VAC charging cable is only 10′ long, and it is tempting to use an extension cord when the outlet is too far away. We have seen Roadsters get bricked due to improperly sized extension cords in use for charging. The yellow charge cable needs a full 15 Amps to properly operate, and be on a dedicated circuit which is not likely in a residential setting where multiple outlets are “daisy-chained” or shared with other devices. Further, most off-the-shelf extension cords are only 16 gauge (7 Amps) which is cannot be used to charge a Roadster. They will overheat. Extension cords should be 50′ or less. Here is a table for proper sizing: 18 Gauge Extension Cord – 5 Amps 16 Gauge Extension Cord – 7 Amps 14 Gauge Extension Cord – 12 Amps 12 Gauge Extension Cord – 16 Amps (Minimum recommended size) 10 Gauge Extension Cord – 22 Amps (Ideal size)