NEC Code for Hot Tub Disconnect: Location and GFCI Rules (2026)
NEC code for hot tub disconnect explained: the 5 ft rule, within-sight distance, GFCI protection, emergency switch and wiring layouts.
NEC Code for Ground Rods: Requirements, Spacing and Wire Size (2026)
NEC code for ground rods explained: 8 ft depth, the 25 ohm rule, when two rods are needed, GEC wire size, spacing and subpanel rules.
NEC Code for Floor Receptacles: Rules, GFCI & Boxes (2026)
NEC code for floor receptacles explained: 18-inch wall rule, listed floor boxes, meeting room outlets (210.65), GFCI and 2020 to 2026 changes.
NEC Article for Demand Factors: Article 220 Tables Explained (2026)
NEC article for demand factors is Article 220. See Table 220.42, 220.45, dryer and range factors, a worked example and a free PDF cheat sheet.
NEC Code for Clearance in Front of Panels: 110.26 Rules (2026)
NEC code for clearance in front of panels explained: 110.26 working space table, 36 in. residential rule, exceptions, OSHA and a free PDF.
NEC Code for Buried Electrical Wires: Depth Chart & Rules (2026)
NEC code for buried electrical wires explained: burial depth chart, Table 300.5, conduit rules, 12/2 Romex answers and a free PDF cheat sheet.
NEC Code for Bonding Bushings: When They Are Required (2026)
NEC code for bonding bushings explained: where 250.92 and 250.97 require them, bonding vs grounding bushings, jumper sizing and a free PDF.
NEC Article for Box Fill: Rules, Table and Formula (2026)
NEC article for box fill explained: Article 314.16 formula, volume allowance table, box volumes, worked example and a free PDF worksheet.
NEC Article 210.8 A Explained: GFCI Rules for 2026
NEC article 210.8 A lists where dwelling units need GFCI protection. See locations, 2020 to 2026 changes, 210.8(C) and (D), and a free PDF.
NEC Code for Outlet Orientation: 7 Rules Explained (2026)
NEC code for outlet orientation: the NEC sets no ground-pin rule, but bans face-up countertop outlets, the tub zone, TR rules and 6 ft spacing.
NEC Article for Conduit Fill: 5 Key Rules and Tables (2026)
NEC article for conduit fill explained: Chapter 9 Table 1 limits (53/31/40%), Tables 4 and 5, EMT, PVC and RMC charts, plus a free calculator.
NEC Code for Smoke Detector Locations: What the 2023 NEC and NFPA 72 Require
NEC code for smoke detector locations explained: what NFPA 72 and the 2023 NEC require for bedrooms, hallways, ceilings and kitchens.
NEC Article for Grounding and Bonding: Article 250 Explained (2026)
The NEC article for grounding and bonding is Article 250. Learn what 250.4 covers, sizing Tables 250.66 and 250.122, plus Articles 200 and 517.
Conduit Nipple Fill Rule NEC Under 24 Inches: Chapter 9 Note 4 Fill Exception
Conduit Nipple Fill Rule NEC Under 24 Inches explained with Chapter 9 Note 4, conduit fill limits, short nipples, conductor count, and sizing rules.
NEC Conduit Fill for 3+ Conductors: 40% Rule Explained
NEC Conduit Fill for 3+ Conductors: Learn the 40% rule, conduit fill calculations, conductor limits, and NEC sizing requirements with examples.
Conduit Fill Calculator (NEC) with CSA, IEC, BS 7671 and AS/NZS Modes
Free conduit fill calculator for EMT, PVC and RMC with NEC 53/31/40% limits, nipple rule, THHN chart and worked examples. Also CSA, IEC, BS 7671, AS/NZS.
