01
Establish the inputs
Voltage, available fault current, electrode configuration, gap, working distance, and clearing time at both arcing-current branches.
IEEE 1584-2018 calculation support
Make the arc-flash math reviewable.
Enter panel data, inspect both arcing-current branches, and produce a traceable label bundle without hiding the assumptions behind a single result.
- 208 V–15 kV
- calculated model window
- 2 branches
- full and reduced current
- 3 documents
- one stored assessment
Assessment previewENGINE v1.0
Incident energy
9.5 cal/cm²
Arc-flash boundary
65.5 in
PPE selection basis
Incident-energy method · arc rating ≥ 9.5 cal/cm²
Qualified person selects the complete PPE system. No category conversion.
Iarc18.34 kA
Iarc_min15.91 kA
MethodIEEE 1584-2018
Versioned documents
Inputs, flags, engine version and method stay attached.
Fails outside scope
Unsupported cases stop instead of extrapolating.
Review status is visible
Independent qualified review: pending.
Workflow
From field inputs to a defensible record.
02
Review the calculation
Inspect incident energy, boundary, method limits, flags, and intermediate values before treating the result as field data.
03
Produce the record set
Generate a warning label, calculation record, and energized-work permit from one versioned assessment.
What ships
One assessment. Three connected documents.
The label, calculation record and permit use the same stored inputs and method-specific PPE basis. No transcription step between them.
- Warning label in 4×6, 4×4 or 3.5×5 stock
- Calculation record with inputs, branches, notes and provenance
- Energized-work permit prefilled with assessment values
- Watermarked preview before any commercial action
- Re-downloadable panel record after unlock
Pricing
Free preview. Pay per panel, or go unlimited.
Compare the tiers in detail →Free
$0 no card
Run the calculation and inspect the record before any payment enters the picture.
- IEEE 1584-2018 calculator with every intermediate value shown
- Both arcing-current branches, flags and method limits
- Watermarked label preview for every calculation
- Email the preview to yourself — one magic link, no password
Label pack
$19 one-time
One credit unlocks one panel’s clean three-document bundle. No subscription.
- 10 panel credits — credits never expire
- One credit = one panel's clean label, record and permit, forever
- Re-downloads are free once a panel is unlocked
Create account to buy
Credits attach to your email — one magic link, no password.
Pro
$29 /mo
For recurring assessment work: every download is covered while the subscription is active.
- Unlimited clean labels and permits — downloads never touch credits
- Batch PDF: one PDF, one label per page, ordered by equipment ID
- Panel library with CSV import and export
- 5-year reassessment reminder emails
Create account to subscribe
Pro attaches to your email — one magic link, no password.
$29/mo billed monthly · $290/yr billed annually (2 months free) · cancel anytime, access runs to period end
Before you rely on it
Questions the product should answer plainly.
Does the calculator assign a PPE category?+
Only when the NFPA 70E PPE category method is actually used and its limits are met. Calculated IEEE 1584 results show incident energy and the minimum arc-rating basis; they are not converted to a category.
Is this a PE-stamped arc-flash study?+
No. It is calculation and document support for qualified-person workflows. It does not replace a facility study, equipment-condition assessment, training, energized-work justification, or professional review.
What happens outside the verified model range?+
The result switches to a verified table-method row where one applies. Otherwise it says engineering study required and withholds an invented energy, category, or boundary.
Can I inspect the result before paying?+
Yes. The numeric result and the watermarked label preview are free. Commercial downloads remain fail-closed until checkout and delivery have passed their launch verification.