Calculators

Engineering Calculation Resources

Quick-reference engineering calculators and tools to assist electrical engineers with common calculations. These tools provide approximate results for preliminary engineering and screening purposes — detailed engineering studies should always be performed by licensed engineers using complete system models.

Available Calculation Tools

• Voltage drop calculator — Feeder and branch circuit voltage drop per NEC
• Conductor ampacity tables — NEC Table 310.16 and correction factors
• Transformer kVA calculator — Single and three-phase transformer sizing
• Power factor correction estimator — Capacitor kVAR sizing
• Short circuit estimator — Simplified fault current calculation
• Motor FLA calculator — Full load amps from nameplate data
• Cable pulling tension estimator — Conduit fill and pulling force

Disclaimer

These tools are provided as educational references only. All calculations for construction, equipment specification, or regulatory compliance must be performed by a licensed Professional Engineer in accordance with applicable codes and standards. Contact Ytspower for professional engineering services.