Table

HVAC Nameplate Electrical Terms Table

HVAC Nameplate Electrical Terms Table reference with assumptions and boundary notes.

Reference boundary

Nameplate terminology reference only. It does not size conductors, fuses, breakers, disconnects, feeders, or branch circuits.

Reference table

Decode common HVAC equipment nameplate abbreviations such as MCA, MOCP, RLA, LRA, and FLA.

Reference basis uses common manufacturer HVAC nameplate terminology; the actual equipment label governs field use.
AbbreviationMeaningNameplate contextBoundary
MCAMinimum Circuit AmpacityMinimum conductor ampacity value shown on HVAC nameplatesNameplate term only; conductor and circuit review are separate
MOCPMaximum Overcurrent ProtectionMaximum fuse or breaker value shown on HVAC nameplatesNameplate term only; installed protection must follow equipment markings and applicable review
MOPMaximum Overcurrent ProtectionAlternate abbreviation for maximum overcurrent protectionNameplate term only; use the exact equipment label
RLARated Load AmpsCompressor rated load current referenceNameplate term only; compressor manufacturer data governs use
LRALocked Rotor AmpsMotor or compressor locked-rotor current referenceNameplate term only; starting and protection review are separate
FLAFull Load AmpsFan or motor full-load current referenceNameplate term only; use the actual equipment label before estimating
Use notes
  • Use this table for preliminary reference and arithmetic checks only.
  • Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.