rla/lra

[el_coyote2373]

whats the differance in these two? i know they are run load amps and load run amps but there is a big differance in the numbers. my understanding is that rla is the amps being drawn while running but what is lra?

[fearlessfurnace]

Locked Rotor Amps. what the thing draws with no rotation-no back emf. untill the thermal safy trips or something melts wich ever comes first.

[el_coyote2373]

ok. that makes since. i dont know why a tech. told me they were called load run amps.

[DOGBOY]

i dont know why a tech. told me they were called load run amps.

becouse he DID NOT KNKOW what it meant either.

dogboy

[Pion]

I thought rla was rated load amps....just an engineer's estimation of what a motor will pull under normal load.

[fearlessfurnace]

there is a rated amps listed that is the motor working full-out

[SBKold]

If im drawing anthing close to full on RLA ....im looking for reasons why.

[knave]

On a lennox (and probably others)

rated load amps are the amps drawn during design conditions.

Which is high OAT and high indoor load

at least that's what I was told.

[MichaelPaladin]

On a lennox (and probably others)

rated load amps are the amps drawn during design conditions.

Which is high OAT and high indoor load

at least that's what I was told.

Usually under normal conditions a compressor is going to pull about 75-80% of whats listed as RLA. At least thats what I've seen over the years.