http://www.electrician.com offers the following under "Calculators:"
- Raceway Fill Calculators
- Standard OCPD Sect. 240.6 Calculator
- Table 250.66 Calculator
- Table 250.122 Calculator
- Excel 7.0+ Table 310.16
- How to Determine Cable Tension with a Sheave and Scale
- Cable Tray Pulling Tension Calculator with examples
- Wire Pull Calculator with references
- Excel 7.0 Neher-McGrath Calculator for Power Conductors and Thermal Derating
- Multi-purpose Electrical Calculator
- Voltage Drop Calculator
- Standard Calculator