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checkmatescott
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i have an oven fan motor and its rated at 15watts, is this output or consuption if its the output whats the efficiency, how many watts is needed to make it run at full capacity thanks i n advance
For pretty well every kind of machine, the input power is much easier to measure, for a start. Even steam engines have measurable cylinder dimensions and boiler pressure but it's anyones guess how well it will pull trucks up a hill or plough a field. 'Horse Power' used to be based more on a salesman's promise than anything else.DaveE said:Yes, it's input power in normal operation.