The electrical specifications for a treadmill are probably not your first consideration as you set up your new machine. However, properly connecting your treadmill is important for the safety of both the user and the treadmill. Consult your user's manual for specific instructions on how to correctly plug in and power your machine.
Function
The electrical specifications for a treadmill protect both the machine and the user. Your treadmill can be damaged by sudden voltage changes in your home's power. Using a surge suppressor will decrease this risk. Proper grounding of a treadmill is required to reduce the risk of electric shock if the machine malfunctions.
Considerations
The Empire Fitness Services website notes that treadmill electrical requirements are specific to the "brand, model, version and sometimes, the serial number." Consult your user's manual or the manufacturer of your treadmill for specific instructions on how to plug in your machine.
Specifications
Treadmill plugs have a grounding pin -- the third, cylindrical prong on the plug -- that must be plugged into a grounded outlet box. Residential treadmills generally require a standard 120-volt, 15-amp dedicated circuit. A dedicated circuit feeds only one outlet, and other devices should be powered on the same circuit as the treadmill.
External Requirements
Some manufacturers suggest using a surge suppressor with your treadmill. Icon Health and Fitness -- maker of many popular treadmill brands, including NordicTrack, FreeMotion, Weslo and ProForm -- recommends using a single-outlet surge suppressor with a UL suppressed voltage rating of 400 volts or less and a minimum surge dissipation of 450 joules.
Precautions
Improperly plugging in your treadmill as outlined by the manufacturer could cause damage to the machine and possibly injury to the user. NordicTrack warns that not using a surge suppressor could result in damage to the control system of the treadmill. This could cause the walking belt to slow, accelerate or stop unexpectedly.
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