Using an extension cord with a pressure washer can lead to several potential issues and safety concerns. Pressure washers typically draw a significant amount of electrical power to operate, and using an inadequate or improper extension cord can cause the following problems:
Voltage Drop: Pressure washers require a stable and sufficient voltage supply to function correctly. If the extension cord is too long or has a lower gauge (thicker wires) than what the pressure washer requires, it can result in voltage drop. Voltage drop leads to reduced power reaching the pressure washer, causing it to operate at lower efficiency and potentially leading to motor issues or overheating.
Overheating: An insufficient extension cord can cause the pressure washer's motor to overheat. The motor may struggle to draw the required power, leading to increased heat generation and potential damage to the motor or other components.
Tripped Circuit Breakers or Fuses: If the pressure washer tries to draw more current than the extension cord can handle, it can lead to the tripping of circuit breakers or blowing of fuses in the power supply, interrupting the power and shutting down the pressure washer.
Reduced Performance: With inadequate power supply, the pressure washer may not perform as expected. The water pressure might be lower than desired, and the cleaning efficiency can suffer.
Fire Hazard: In extreme cases, an undersized or damaged extension cord can overheat and become a fire hazard, especially if it is not rated for the power load of the pressure washer.
To avoid these issues and ensure safe and proper operation, it is crucial to follow these guidelines when using an extension cord with a pressure washer:
Use the Right Extension Cord: Always use an extension cord that is suitable for outdoor use, has the correct length (avoid excessively long cords), and has the appropriate wire gauge to handle the pressure washer's power requirements. Check the pressure washer's manual for the recommended extension cord specifications.
Check Cord Condition: Inspect the extension cord before use to ensure there are no visible signs of damage or wear. Damaged cords should never be used.
Avoid Overloading: Avoid running other high-power appliances on the same circuit while using the pressure washer to prevent overloading the electrical system.
Use a GFCI Outlet: Plug the pressure washer (or the extension cord, if it has one) into a Ground Fault Circuit Interrupter (GFCI) outlet to protect against electrical shock.
Unroll the Extension Cord: Fully unroll the extension cord to prevent overheating and reduce the risk of tangling or damage.
By following these precautions, you can safely use a pressure washer with an appropriate extension cord and ensure proper performance without risking damage to the equipment or compromising safety. Always refer to the pressure washer's manual for specific guidelines and safety recommendations.