Ugly's Electrical References, 2020 Edition is the gold standard on-the-job reference tool of choice for electrical industry professionals. Offering the most pertinent, up-to-date information used by electricians, including: updated NEC code and table change information, mathematical formulas, NEMA wiring configurations, conduit bending guide, ampacity and conduit fill information, transformer and control circuit wiring diagrams, and conversion tables. New Features of this Edition: - Updated to reflect changes to the 2020 National Electrical Code (NEC) - Expanded coverage of the following topics: o Junction Box size calculations o Selecting, testing, and using multimeters to measure voltage, resistance, and current o Selecting, testing, and using a clamp-on ammeter to measure current o Selecting, testing, and using a non-contact voltage tester