Apr 14, 2008 · RLA is a mathematical calculation required to meet Underwriters Laboratories (UL) approval. The compressor manufacturer must run a series of tests to determine the Maximum …

Jul 6, 2012 · RLA - Rated Load Amps: The maximum current a compressor should draw under any operating conditions. Often mistakenly called running load amps which leads people to believe, …

FUSE SELECTION PROCEDURE CHART FOR WELDED COMPRESSORS AND COPELAND SCROLL COMPRESSORS Determine Rated Load Amps (RLA) from nameplate or Section F. …

Feb 10, 2011 · Can someone provide an accurate explanation for compressor contactor ratings such as double pole, single pole,FLA, LRA,RLA,RES ,etcetera. I understand what each stands for (like FLA = …

Sep 25, 2023 · I've seen some with oversized motors not go below 70% of rla. Wsc with a vfd can unload to ~5% of the rated load. Look at the evap delta T and flow rate to determine capacity & % of …

Jul 7, 2006 · RLA is a rating point that manufactures use to help guide you in selecting a contactor for a compressor. It is a "Rating" indicator. FLA is a thing of the past, for compressor stamping, anyway, …

Jun 23, 2025 · Need help diagnosing 2.5 ton system. Going back tomorrow to check piston and try to pump down system but what do you guys think? Compressor rated RLA 10 running at 7 amp, kinda …

Feb 2, 2014 · I was just checking out some units at a truck stop where me and my dad are parked for the night, and I was looking at some numbers on the compressors. I know what amps and voltages …

Jan 16, 2024 · ehsx 14,339 posts · Joined 2020 #2 · Jan 16, 2024 Rla is rated load amps as applied Lra is locked rotor amps Fla is maximum operating amps without the motor overheating Olt is used …

Aug 27, 2011 · 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 …