What is the maximum length of a cord that can be used to supply a 240 V air conditioner?

The maximum length of a cord that can be used to supply a 240 V air conditioner is strictly regulated to ensure safety and efficiency. A cord that is too long can create excessive voltage drop, which may lead to reduced performance of the air conditioning unit and increased heat generation—posing a risk of overheating or fire.

In practical terms, a cord length of 6 feet for a 240 V air conditioner is commonly accepted and aligns with safety standards to minimize voltage drop while maintaining efficient operation. This length is ideal in most residential settings where air conditioners are typically closer to the power outlet.

Longer cords, such as lengths of 10 feet, 15 feet, or 20 feet, may not provide the necessary level of safety due to the increased risk of voltage drop and potential strain on the electrical infrastructure of the equipment. Therefore, adhering to the regulation of a maximum of 6 feet helps ensure reliable operation without exceeding the manufacturer's guidelines for safe distances for cord usage with heavy electrical appliances like air conditioners.