3 Answers

Impererial horsepower of approx 500 foot-pounds per second is approximately equivalent to 745.7 watts.
The metric horsepower of 75 kgf-m per second is approximately equivalent to 735.499 watts.
The boiler horsepower is used for rating steam boilers and is equivalent to 34.5 pounds of water evaporated per hour at 212 degrees Fahrenheit, or 9,809.5 watts.
One horsepower for rating electric motors is equal to 746 watts.
Continental European electric motors used to have dual ratings, using a conversion rate of 0.735 kW for 1 hp
The Pferdestärke PS (German translation of horsepower) is a name for a group of similar power measurements used in Germany around the end of the 19th century, all of about one metric horsepower in size.[2][3]
British Royal Automobile Club (RAC) horsepower is one of the tax horsepower systems adopted around Europe which make an estimate based on several engine dimensions.

how can i find an amp size if the only info i have is.....the fuse size which is ( 208)V ac and a 3HP motor,if the fuse is rated @ twice the full load current?? im going nuts trying to figure this one--.Deon

how can i find an amp size if the only info i have is.....the fuse size which is ( 208)V ac and a 3HP motor,if the fuse is rated @ twice the full load current?? im going nuts trying to figure this one--.Deon