Single Line Diagrams
Create intelligent single line diagrams with an extensive library of electrical components.
Learn more →
All-in-One Platform for Electrical Engineering
Start a CEC or NEC project. Stamp-ready in one canvas.
EEP is a per-project workspace for licensed electrical engineers. Load calc, feeders, panels, single-line, lighting, life-safety, and validation share one state — so every PDF is a snapshot of the same numbers you see on screen, sealed with a SHA-256 hash and your P.E. seal.
Cloud-Based
NEC, CEC Workflow Ready
Secure & Reliable
Inside the workspace
One project. One canvas. Every card sees the same state.
No copy-paste between screens. Add a load — feeder amps update. Bump a breaker — voltage drop recomputes. Stamp the project — every PDF inherits your seal and the SHA-256 hash of the canvas at sealing time.
Live state
Every card subscribes to the workspace store. Add a load, the feeder card recomputes amps within milliseconds — no "Run calculation" button needed.
Git-like branching
Fork a what-if without touching the main design. Compare field-level diffs. Merge back when the owner approves. Every edit logged.
D01 validation gates
14 acceptance gates (A1..A14) run against your branch state. PDFs can't be stamped until the gates pass — backend enforces, not just the UI.
Sealed deliverables
Stamp embeds your P.E. seal + a SHA-256 hash of the canvas at sealing time. Reviewers can independently verify the PDF matches the snapshot.
Load Analysis
Perform demand and load calculations with built-in code-compliant methods.
Learn more →Panel Schedules
Generate accurate panel schedules and balance loads automatically.
Learn more →Feeder / Voltage Drop
Calculate voltage drop and optimize conductor sizing with ease.
Learn more →Short Circuit & Arc Flash
Run short circuit and arc flash studies with industry-leading calculation engines.
Learn more →Reports & Export
Produce professional reports and export to PDF, Excel, DWG, and more.
Learn more →Phone, Tablet, Desktop
Installable PWA — runs offline on Android, iOS, macOS, Windows. Field staff use it on iPads on site.
Learn more →Engineered for the Way You Work
Create Project
Set up your project and define systems, standards, and settings.
Design
Build single line diagrams with smart components and templates.
Analyze
Run load flow, voltage drop, short circuit, and arc flash.
Document
Generate panel schedules, feeder schedules, and reports.
Deliver
Export professional deliverables and collaborate with your team.
⚡ Free during Beta
Free engineering tools — Code aware
Thirteen browser-based calculators, every result traced to NEC 2023 or CEC 2024.
Just create a free account, Done!, Enjoty it everyday
NEC Load Calculator
Article 220.82/.84 — dwelling, multi-family, commercial.
NEC 220.42 · T220.55
Voltage Drop
K/CM method · ≤3% feeder / ≤5% total.
NEC Annex D · CEC R8-102
Cable Sizing
Ampacity + ambient + bundling derating + 60/75/90 °C terminal cap.
NEC T310.16 · CEC T2/T4
Breaker Sizing
Next-standard OCP + small-wire caps absolute (15/20/30 A).
NEC 240.4(D) · T240.6(A)
Transformer Sizing
kVA sizing + primary/secondary OCP multipliers.
NEC 450.3 · CEC R26-242
Demand Factor
Demand schedules: dwelling, hotel, store, hospital, school.
NEC T220.42 · CEC T14
Panel Schedule
Per-circuit schedule with phase balance + demand totals.
NEC Art.408 · CEC R8-108
NEW
AutoCAD Scale Converter
Object scale factor · all paper sizes (A0-A4, Arch, ANSI) · metric + imperial.
ISO 5455 · ANSI Y14.5
NEW
Equipment Library
Standard transformer, breaker, conduit, wire sizes — quick reference.
NEMA · CSA C22.2
BETA
Place on Drawing
Drag electrical symbols onto canvas; auto-table + Excel export.
EEP canvas v1
Built for every electrical workflow in North America
Independent P.Eng / P.E.
Engineering Studios
AEC Firms
GC Desks
Commercial Projects
Industrial Plants
Healthcare Facilities
Education / K-12
AHJ-Ready Workflow
Electrical Contractors
Independent P.Eng / P.E.
Engineering Studios
AEC Firms
GC Desks
Commercial Projects
Industrial Plants
Healthcare Facilities
Education / K-12
AHJ-Ready Workflow
Electrical Contractors