Month: October 2026

NEC 200 Grounded Conductor Identification for the Journeyman Exam: White, Gray, Stripes and Re-Identification

2026 NEC Article 200: how the grounded conductor is marked by size, when white may be re-identified, grouping neutrals and screw shell polarity.

Updated 2026-10-12 · Read the article ›

NEC 215 Feeders for the Journeyman Exam: Minimum Conductor Size, the 125% Rule, Feeder Breakers and the 2026 Section Numbers

Size a feeder under the 2026 NEC: 215.4(A)(1) minimum ampacity, the correction check, the 215.5 breaker, the neutral exception and the new 2026 section numbers.

Updated 2026-10-12 · Read the article ›

NEC 455 Phase Converters and 460 Capacitors for the Journeyman Exam: What They Do and How the Motor Overload Changes

2026 NEC phase converters (455) and power factor capacitors (460): the manufactured phase, stored charge, and why the motor overload is set lower.

Updated 2026-10-12 · Read the article ›

NEC 376, 366 and 368 for the Journeyman Exam: Wireway Fill, Gutter Bus Bars and Busway Support Worked Out

2026 NEC wireways (376), auxiliary gutters (366) and busways (368): the 20 percent fill, 75 percent at splices, 30 conductors and 5 ft supports.

Updated 2026-10-12 · Read the article ›

NEC 362 ENT and 320 AC Cable for the Journeyman Exam: Where They Go, How They Are Supported and Attic Protection

2026 NEC ENT (362) and AC cable (320): the three-floor limit, 3 ft straps, anti-short bushings, no wet locations and the 6 ft attic scuttle rule.

Updated 2026-10-12 · Read the article ›

NEC 314.28 Pull and Junction Box Sizing for the Journeyman Exam: Straight Pulls, Angle Pulls and Rows Worked Out

Size a pull box under 2026 NEC 314.28: 8 times the largest raceway for straight pulls, 6 times plus the rest of the row for angle pulls, worked out.

Updated 2026-10-12 · Read the article ›

NEC 312 and 404 for the Journeyman Exam: Cabinet Wiring Space, Wet Locations and Switch Installation Rules

2026 NEC cabinets (312) and switches (404): the 40 and 75 percent wiring space limits, wet-location fittings, knife switch position and 6 ft 7 in.

Updated 2026-10-12 · Read the article ›

NEC 250.30 Separately Derived Systems for the Journeyman Exam: Bonding Jumper, Electrode and GEC Size Step by Step

How 2026 NEC 250.30 grounds a transformer secondary: one bonding point, the building electrode, a GEC sized from the derived conductors, worked out.

Updated 2026-10-12 · Read the article ›

NEC 250.118 with 348 and 350 for the Journeyman Exam: When Flexible Conduit Counts as the Equipment Grounding Conductor

2026 NEC 250.118 lists what can serve as the equipment ground. See when LFMC qualifies: 3/8 to 1/2 trade size, 20 A or less, 6 ft total.

Updated 2026-10-12 · Read the article ›

NEC 250.104 and 250.92 to 250.94 for the Journeyman Exam: Bonding Piping, Structural Steel, Service Raceways and the Intersystem Terminal

2026 NEC bonding beyond the EGC: water and gas piping, structural steel (250.104), service raceways (250.92) and the intersystem bonding terminal.

Updated 2026-10-12 · Read the article ›