Using a 15ft heavy-duty N14-50 extension cord to connect a dryer outlet to a Tesla vehicle may not be safe or reliable. Here's why:
Electrical Load: The N14-50 outlet is typically used for a 50-amp electrical load, while the Tesla vehicle charger may require a 60-amp circuit or higher, depending on the model. Connecting a 60-amp load to a 40-amp breaker (which your dryer outlet has) can overload the circuit and potentially cause electrical hazards.
Extension Cord Capacity: While heavy-duty extension cords are designed to handle increased loads, it's crucial to use the appropriate cord for the electrical requirements. A 15ft heavy-duty N14-50 extension cord might not be designed to handle the potential power draw of a Tesla vehicle charger.
Voltage Drop: A longer extension cord can result in voltage drop due to the resistance in the cable. Voltage drop can affect the charging efficiency and potentially damage the charging equipment. It's recommended to use the shortest and thickest gauge cord possible to minimize voltage drop.
To ensure safety and reliability when charging your Tesla vehicle, it's generally best to consult a licensed electrician to assess your specific electrical setup. They can provide guidance on the proper circuitry, outlets, and wiring required to support the charging needs of your Tesla.