Getting started
How do I start my first project?
From the dashboard, click New Project. Pick your standard (NEC 2023 or CEC 2024), units (Metric or Imperial), and jurisdiction. Add a panel, add loads to that panel, then click Run Calculation. The platform produces a service-load result, a panel schedule, and a draft single-line — all from the same engine.
Which standard should I pick?
If the project is in the United States, NEC 2023. If it's in Canada, CEC 2024. If your firm works in both countries, the Both subscription tier lets you choose per project. The platform never crosses rule packs mid-project — once you pick, it locks (with an explicit switch workflow if you really need to change it).
Is the free tier really free?
Yes. Free tier covers residential ≤ 300 m² with the same engine, same warnings, same PDF report, same TraceStep audit as the paid tiers. No watermarks, no daily limits. Free is gated by project scope, not feature depth.
Engine & calculations
Why does my voltage drop result differ from a hand calc?
EEP uses temperature-corrected conductor resistance at the actual conductor operating temperature, not the book-rated 75°C value. For long runs at high load, this is a measurable difference. The TraceStep panel shows the corrected R and the operating temperature it used.
How does the engine pick a breaker size?
The engine rounds the design current to the next standard size per NEC 240.6(A) or CEC Rule 14-104, subject to NEC 240.4(D) small-conductor caps (15 A for #14, 20 A for #12, 30 A for #10). Caps are never overridden — not even by admins.
Can I override an engine result?
Yes — every result has an override button with a required note. The platform flags the override in the warnings panel and records it in the audit log. We never silently "correct" an engineer's professional judgment. Force-set values are highlighted in the report so a reviewer can see them.
What does ADVISORY ONLY mean on contractor outputs?
Contractor-tier accounts produce field-tool outputs (quick current, conduit fill, voltage drop) that the engineer of record is expected to confirm. The ADVISORY ONLY label is hard-coded into the report header and cannot be removed by any role. It's a regulatory boundary, not a UX choice.
Reports & submittal
Are EEP reports accepted by AHJ?
The reports are submittal-shaped — they include the rule citations, calculation details, P.E. seal block, and audit trail that plan reviewers ask for. Acceptance is ultimately the AHJ's decision; we know of dozens of jurisdictions where EEP PDFs have been used in approved submittals. Reach out if you want references in your area.
Can EEP auto-stamp my design with my P.E. seal?
No. EEP renders a sized seal/signature area positioned for an ink stamp or an electronic seal you apply yourself. Sealing is a licensed engineer's professional act — the platform respects that boundary by design, not omission.
What formats can I export to?
PDF (primary), DOCX, XLSX (schedules), SVG/DXF (one-lines), and JSON (full audit log). Each format is generated from the same engine state — they will never disagree on a number.
Accounts, teams, billing
How do I add a teammate?
From the team page, invite by email. They receive a setup link and join your organization with the role you set (viewer, editor, admin). Project sharing is separate and scoped per project.
What happens if I cancel?
Your projects remain accessible read-only for 90 days; PDFs already generated remain downloadable indefinitely. After 90 days, projects are archived to cold storage but never deleted unless you explicitly request it. Export-everything is a one-click action.
Can't find your answer?
Email [email protected] with the project ID and approximate timestamp. A real engineer (not a bot) reads every message and responds within one business day, usually same day.