Generator sizing is unique to individual applications, influences such as site conditions, motor efficiencies, starting methods and generator step ratings are among many factors that can determine the KVA of the generator needed. Therefore this calculator should be used as a guide only and clarification should be obtained by a certified engineer.
CONVERTING KW (KILOWATTS) TO KVA POWER FACTOR 0.8
CONVERTING KVA (POWER FACTOR 0.8) TO KW (KILOWATTS)
CONVERTING AMPS TO KVA/KW
CALCULATING AMPS (WHEN KVA IS KNOWN)
CALCULATING 3-PHASE 400V MOTORS - ENTER STARTING METHOD AND MOTOR HP
START SEQUENCE MOTOR HP MOTOR KW PF Direct on line Star delta Run variable Amps Start variable Run amps Start amps
Generators needed to run
Generators needed to start
recommended Generator needed
RECOMMENDED GENERATOR BASED ON STEP LOADING OF 70%, POWER FACTOR 0.8. GENERATORS DIFFER ON STEP LOADING RATINGS. THIS CALCULATOR IS FOR A GUIDE ONLY, ALWAYS GAIN PROFESSIONAL ADVICE BEFORE PURCHASE.