Electrical Reference Tables

Full-load current for single-phase and three-phase motors. Use these for sizing conductors and overcurrent protection.

Allowable ampacities at 60°C, 75°C, and 90°C for copper and aluminum conductors.

Max breaker/fuse size by conductor gauge. The table apprentices need for exams.

How many THHN/THWN wires fit in each conduit size. EMT, IMC, and RMC.

Equipment grounding conductor sizing by overcurrent device rating. Copper and aluminum.

Grounding electrode conductor sizing by service-entrance conductor size. Includes sole connection exceptions.

Torque values by lug type and wire size. Common values for mechanical and compression connectors.

Resistance, area, and diameter for all conductor sizes. The data behind voltage drop calculations.

Multipliers, shrink values, deducts, bender shoe clearance, and bend radius for EMT, IMC, and RMC.