Motor FLA

[HVAC_Austin]

Hello everyone,

I came across an FLA listed like this on a motor today: 4/2-2 FLA
I understand what FLA means, but haven't encountered it written this way before. What does it mean when written this way? Thanks very much.

[Jettinvr6sc]

Is it a dual voltage motor?

Sent from my SGH-I777

[brian.cornell]

Im guessing it is a dual voltage motor if you are using the lower voltage it will be the higher amperage and for the higher voltage it would be the lower amperage

[HVAC_Austin]

It's a possibility. I think it was from a rooftop exhaust fan motor. I looked at so much equipment today, I don't remember for sure what motor had this FLA. I'm just going by what I wrote on my notepad: "4/2-2 FLA?"

[HVAC_Austin]

Im guessing it is a dual voltage motor if you are using the lower voltage it will be the higher amperage and for the higher voltage it would be the lower amperage

So can you break down what the numbers, slashes, and dashes mean? Thanks!

[bkmichael65]

Dual voltage motors have the fla at each voltage separated by a slash. I'm not really sure what the -2 is about

[brian.cornell]

Im not sure about thhe -2 part either

[catalina_mike]

More than likely 4 / 2.2 for a dual voltage motor.

[HVAC_Austin]

More than likely 4 / 2.2 for a dual voltage motor.

That would make sense. Why does it seem like we're always running into things like this in this industry? On top of everything else, now we have to worry about manufacturers using dashes for periods. Don't even get me started on using spell check before they print user manuals.

[fitzyfitta]

120vac=4 amps
208vac=2.2 amp
Not positive on the voltage above, but next time your on a roof check out some motor nameplates and this will all make sense.

[hands]

Hello everyone,

I came across an FLA listed like this on a motor today: 4/2-2 FLA
I understand what FLA means, but haven't encountered it written this way before. What does it mean when written this way? Thanks very much.

What was the voltage? It could be something like 208/240-460 :volt and 4/2-2 amp. That's 208 volt, 4 amp. 240 volt, 2 amp. 460 volt, 2 amp.

[jayguy]

What was the voltage? It could be something like 208/240-460 :volt and 4/2-2 amp. That's 208 volt, 4 amp. 240 volt, 2 amp. 460 volt, 2 amp.

that doesn't really add up but i was thinking along the same lines

120/208-230 VAC......without any decimals 208 and 230 volt units would draw about the same amps.

[Core_d]

120vac=4 amps
208vac=2.2 amp
Not positive on the voltage above, but next time your on a roof check out some motor nameplates and this will all make sense.

This brings to mind a question ive been wandering for a while. I know in a resistive load if volts go up amps go up as well, is this opposite for a inductive load ?I see people going both ways with it here.