A table Saw's power is a basic product criteria to reconsider when evaluating separate brands and types. A Saw's power is commonly described using all or some of the following electrical terms: amps, horsepower, volts and watts. What do these separate electrical terms mean and how are they used when reviewing separate saws? How can you compare separate saws by reviewing their amps, horsepower, volts or watts?
Three of the most basic concepts in electricity are watts (P), voltage (V) and current (I). Electrical power is measured in watts. Voltage is measured by the estimate of volts and current is measured by the estimate of amps. In an electrical system, power or watts (P) is equal to voltage (V) multiplied by the current (I), or volts multiplied by amps (P=V multiplied by I). As an example, a saw that uses 120 volts and 10 amps will use maximum power or watts of 1,200.
Horsepower is an approximate measure of watts or electrical power and can be used to report a table saw's motor. One horsepower is almost equal to 746 watts. Thus, a cutting tool that has a 3 horsepower motor will use maximum power or watts of about 2,238 (746 multiplied by 3).
These tools typically list their volts, amps and horsepower. As shown, you can multiply volts times amps to get a saws' motor's watts or power. Or you can multiply a table saws' horsepower times 746 to get its motor's watts or power. You can use these electrical concepts and units to compare separate table saws' power and motors.
Most cabinet saws, which are the largest, heaviest and sturdiest type, run on 240 volt power. Contractor saws can run on whether 120 or 240 volt power. Transported and benchtop saws normally use 120 volt power. Given their lower power draws, benchtop and Transported types are the best choices for job sites or home workshops. Contractor saws and their heavier electrical demands are most often found in expert woodworking shops where the furnish of power and galvanic current flow is larger.
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