APPLICATIONS
Real-world wiring scenarios — electric ranges, water heaters, EV chargers, detached garages — with recommended NEC-compliant conduit and conductor sizing.
ALL APPLICATIONS
- 01READ →
Conduit Fill for Central A/C Disconnect
Central A/C disconnect wire fill: 3-ton uses 10 AWG copper on 30A breaker, 5-ton uses 8 AWG on 40A. NEC Article 440 with MCA/MOCP from nameplate.
- 02READ →
Conduit Fill for Service Entrance
Service entrance wire fill: 200A dwelling uses 2/0 copper or 4/0 aluminum in 2-inch raceway per NEC 310.12 dwelling reduction. NEC Article 230 governs.
- 03READ →
Conduit Fill for Sub-Panel Feeders
Sub-panel feeder wire fill: 100A uses 3 AWG copper in 1-1/4 EMT, 125A uses 2 AWG in 1-1/4, 200A uses 2/0 in 2 inch. NEC 215 and 225 govern.
- 04READ →
Wire Fill Chart for Hot Tub / Spa Circuits
Wire fill for hot tub: most 50A 240V spas use 6 AWG copper THHN in 1-inch PVC sleeve to GFCI disconnect, per NEC 680.42-680.44. GFCI required.
- 05READ →
Wire Fill Chart for Solar PV Installations
Solar PV wire fill: 10 AWG PV wire on DC side, AC inverter output sized per inverter rating, EMT or PVC raceway. Governed by NEC Article 690.
- 06READ →
Wire Fill Chart for Swimming Pool Wiring
Wire fill for swimming pool circuits: 20A pump on 12 AWG THHN, 50-60A heater on 6 AWG, all in 3/4-1 inch PVC Sch 80 above grade per NEC Article 680.
- 07READ →
Wire Fill for Detached Garage Sub-Feed
Detached garage feeder wire fill: 60A uses 6 AWG copper in 1-inch PVC, 100A uses 3 AWG in 1-1/4 inch. Separate GES required per NEC 250.32.
- 08READ →
Wire Fill for Electric Range Circuit
Electric range wire fill: standard 50A circuit uses 6 AWG copper, 40A uses 8 AWG, 4-wire NEMA 14-50 in 1-inch conduit. NEC 210.19(C) and 220.55.
- 09READ →
Wire Fill for Electric Water Heater
Electric water heater wire fill: standard 4500W tank uses 10 AWG copper on 30A breaker in 3/4 EMT. Tankless 24kW needs 4 AWG on 100A. NEC 422 governs.
- 10READ →
Wire Fill for EV Charger (Level 2 / 240V)
Wire fill for EV charger: 40A breaker uses 8 AWG copper, 60A uses 6 AWG, in 3/4 to 1-inch EMT or PVC. NEC 625.42 continuous-load 80% rule applies.
- 11READ →
Wire Fill for Mini-Split Heat Pump
Mini-split wire fill: 9k-18k BTU uses 14-12 AWG on 15-20A breaker, 24k-36k BTU needs 10-8 AWG on 30-40A. NEC 440 with LFNC whip to outdoor unit.
- 12READ →
Wire Fill for Submersible Well Pump
Submersible well pump wire fill: 1.5 HP at 240V uses 12 AWG copper on 20A breaker, larger pumps need 10-8 AWG. NEC Article 430 motor sizing applies.