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1

No, because AC motors don't have polarity. At least not single-phase ones. (Because single-phase power doesn't have polarity, it switches polarity 100 or 120 times a second.). These motors choose their direction by a "starter" circuit built into them. Just for amusement, I'll mention that three-phase motors are a different deal. Three-phase power is ...


2

If the fan were running in reverse the test tissue would not get sucked up at all even if it brought right up to the fan. It would blow it away. Single phase AC motors cannot be reversed with the supply wires. Reversible ones have terminals in the connection box that get swapped. Fan motors like this are usually hard-wired and cannot be reversed by the ...


4

Just crappy fan design and misleading ratings (450-920 cfm with no duct at all, and terrible fall off with any normal resistance - or else it's an outright lie.) What is your actual duct arrangement (size, length, number of turns?) If the fan was running in reverse, the tissue would be blown away, not sucked up from any distance. A/C motors run on current ...


1

208/120Y is cheaper for supplying condominiums because one neutral can carry the unbalanced loads of three ungrounded conductors. But for the consumer, the voltages difference of 208V vs 240V usually equates to the same overall wattage, with the only negligible concern being it takes longer for heating elements to reach their desired temperature. As for ...


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Volts x Amperage=Wattage I have a 220 volt device (motor, dryer whatever... it makes little difference for this example). Single phase device draws 43 amps (43 x 220 = ~ 9460 Watts or 9.5 KW) Same unit with 3 phase draws 25 amps (25 x 220 =~ 5500 Watts or 5.5 KW) *** The same amount of work is output with either unit despite the 3 phase using less power ...


0

According to the NAHB, the average lifespan of heat pumps in the US is about 16 years. A Google search seems to reveal a wide range of opinions about Goodman heat pumps in particular.


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Yes: tag the red lead on T4 with electrical tape remove the red leads from T4 and 3, leaving the black lead connected to 3 connect the tagged red lead to 3 connect the untagged red lead to T4 (This is how you implement the "swap the red leads" procedure mentioned briefly on the nameplate.)


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Use a fan control (dimmer designed specifically for fans) on the power supply to the fan. Common AC electric motors have a high low impedance on starting because velocity is 0, This draws a large initial current to get the motion started and as velocity increases impedance drops increases and the current draw decreases. A dimmer will reduce the ...



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