Quick Formula Guide Based on the 2020 National Electrical CodeThis 8-page Quick Formula guide contains 15 important tables based on the National Electrical Code 2020. The Quick Formula guide fits anywhere, it comes in a handy 4.3 x 5.5 zize.
Includes:
- Table 250.66 Grounding Electrode Conductor for
- Alternating-Current Systems
- Table 250.102(C)(1) Grounded Conductor, Main Bonding Jumper, System Bonding Jumper, and Supply-Side Bonding Jumper for Alternating-Current Systems
- Table 250.122 Minimum Size Equipment Grounding Conductors for Grounding Raceway and Equipment
- Table 310.15(B)(1) Ambient Temperature Correction Factors Based on 30°C (86°F)
- Table 310.15(C)(1) Adjustment Factors for More Than Three Current-Carrying Conductors
- Table 310.16 Ampacities of Insulated Conductors with Not More Than Three Current-Carrying Conductors in Raceway, Cable, or Earth (Directly Buried)
- Table 314.16(A) Metal Boxes
- Table 314.16(B) Volume Allowance Required per Conductor
- Table 430.248 Full-Load Currents in Amperes, Single-Phase Alternating-Current Motors
- Table 430.250 Full-Load Current, Three-Phase Alternating-Current Motors
- Full Load Current Table Single Phase Transformer
- Formulas for Power Factor
- Electrical Standard Formulas