⚡ Panel Design Assistant
Professional Electrical Panel Planning & Sizing Tool
1
Load Type
2
Load Details
3
Results
🎯 Select Load Type
Choose the type of electrical load for your panel design
Please select a load type
⚙️ Load Details
Enter the electrical parameters for accurate calculations
Please enter a valid power value
Auto-set based on starting method (DOL=6, Star-Delta=3, Soft Starter=3, VFD=1.5)
📊 Calculation Results
📐 Formulas Used
Full Load Current (A):
Three Phase: I = P × 1000 / (√3 × V × PF × η)
Single Phase: I = P × 1000 / (V × PF × η)
Three Phase: I = P × 1000 / (√3 × V × PF × η)
Single Phase: I = P × 1000 / (V × PF × η)
Breaker Rating (A):
I_breaker = I_load × 1.25
I_breaker = I_load × 1.25
PF Correction (kVAr):
Q = P × (tan(acos(PF_existing)) - tan(acos(PF_target)))
Q = P × (tan(acos(PF_existing)) - tan(acos(PF_target)))
kVA Sizing:
kVA = P / PF × (1 + Margin)
kVA = P / PF × (1 + Margin)
⚡ Practical Notes
✓ Always verify: Check manufacturer datasheets for actual equipment specifications before final design.
✓ Motor starting: Starting current significantly affects breaker and generator sizing. Consider voltage drop during starting.
✓ Cable sizing: Results based on standard current ratings. Consider derating factors for ambient temperature, grouping, and installation method.
⚠️ Code compliance: Final design must comply with local electrical codes (NEC, IEC, BS, etc.) and regulations.
⚠️ Professional review: This tool provides preliminary calculations. Always have a qualified electrical engineer review final designs.
