Electrical System Designer

# Residential Electrical Distribution System Designer Design complete residential electrical systems from service entrance to branch circuits with a guided wizard-driven workflow. Whether you're an electrical contractor, designer, engineer, inspector, apprentice, or homeowner, this app helps you create professional electrical distribution system designs and generate permit-ready documentation. Simply answer a series of menu-driven questions and the app automatically performs calculations, sizes equipment, designs circuits, and generates a complete electrical design package. ## Key Features ### Residential Service Design • Calculate dwelling unit electrical loads • Design complete residential distribution systems • Support single-family homes, duplexes, townhomes, condos, and ADUs • Determine service entrance requirements • Recommend appropriate service sizes ### Load Calculations • Residential load calculations • Connected and demand load calculations • General lighting load calculations • Appliance demand calculations • HVAC load integration • EV charger load calculations • Continuous load adjustments ### Service & Panel Design • Automatic service sizing • Main panel sizing and configuration • Subpanel design • Feeder calculations • Service equipment schedules • Load balancing between phases ### Branch Circuit Design • Room-by-room circuit design • Automatic circuit assignments • Dedicated appliance circuits • Kitchen and laundry circuits • AFCI requirements • GFCI requirements • Circuit schedules ### Conductor Sizing • Service conductor sizing • Feeder conductor sizing • Branch circuit conductor sizing • Copper and aluminum conductors • Ampacity calculations • Derating calculations ### Overcurrent Protection • Main breaker selection • Feeder breaker sizing • Branch breaker sizing • Coordination of protective devices ### Grounding & Bonding • Grounding electrode system design • Ground rod calculations • UFER grounding support • Bonding conductor sizing • Grounding schedules ### Voltage Drop Analysis • Service voltage drop calculations • Feeder voltage drop calculations • Branch circuit voltage drop calculations • Conductor upsizing recommendations • Design optimization ### Design Drawings • Automatic one-line diagrams • Service entrance diagrams • Panelboard layouts • Distribution system drawings • Grounding diagrams • Exportable engineering graphics ### Reports & Documentation • Load calculation reports • Panel schedules • Circuit schedules • Service equipment schedules • Grounding reports • Voltage drop reports • Material takeoffs • Permit-ready documentation ### Project Management • Save unlimited projects • Reuse project templates • Duplicate existing designs • Project history and revisions ### Export Options • PDF reports • PDF design packages • PNG drawings • SVG diagrams • Print-ready documents ## Designed For • Electrical Contractors • Electrical Designers • Electrical Engineers • Apprentices • Inspectors • Builders • Homeowners • Permit Applicants ## Workflow 1. Create a project 2. Complete the design wizard 3. Generate calculations 4. Review schedules and drawings 5. Export permit-ready documents From initial load calculations to final one-line diagrams, Residential Electrical Distribution System Designer helps simplify residential electrical system design and documentation. Disclaimer: "NEC" and "National Electrical Code" are registered trademarks of NFPA. This app is not affiliated with or endorsed by NFPA. All results must be reviewed by a licensed electrical engineer and approved by the local AHJ before use.