Stop flipping NEC books on the ladder. 16 NEC calculators in your pocket, built for licensed electricians. Pipe fill, pipe sizing, voltage drop, wire size, box fill, EGC and GEC sizing, motor FLA, transformer sizing, generator sizing, pipe bending, service entrance, load calculations, ampacity derate, pull tension, and Ohm's Law. Every result cites the NEC table or section it came from, so the math is defendable when the inspector asks.
Pick your jurisdiction's NEC year - 2017, 2020, 2023, or 2026 - and every calculator recalibrates automatically.
NEC year-aware: Switch between 2017 / 2020 / 2023 / 2026 in one tap. Every calculator recalibrates.
Inspector-defendable: Every result cites the NEC table or section it came from.
Quick Add wire tray: Tap a gauge, drop a wire. Auto-Phase rotates Black > Red > Blue across hot taps. Quick combos drop entire circuit groups (3-phase + N + G, MWBC, Feeder 100A) in one tap. Every drop is haptic.
Deep NEC compliance: Chapter 9 Note 5 nipple rule (60% on 24-inch and shorter runs), Note 9 multiconductor cable rule, Note 4 bare-conductor dimensions, separate TW (60C) and THW (75C) jacket sizing, 2020 NEC 314.16(B)(5) quarter-volume EGC sets, and the full Polywater straight-pull formula with vertical-riser support.
Field Mode: Enlarged tap targets and haptic confirmations so the app stays usable with gloves on.
Inspector-ready PDFs: Save calculations to a project, attach photos of panels and splices, and export a PDF stamped with your name, license number, and state.
Live cross-section visualization: Watch the conduit fill in real time with haptic threshold alerts.
Built for offline: Every NEC table is on-device. Works in basements and crawlspaces. No internet required.
Which NEC code editions does Conduit Fill support?
Conduit Fill supports four NEC editions: 2017, 2020, 2023, and 2026. Switch editions in one tap and every calculator recalibrates automatically. Tables follow the National Fire Protection Association (NFPA) published values for each edition.
Does Conduit Fill work offline?
Yes. Every NEC table is on-device. The app works fully offline - in basements, crawlspaces, or anywhere without signal. No data is sent to external servers.
Why does the app cite NEC tables in every result?
Every output references the NEC table or section it came from (e.g. Chapter 9, 310.16, 250.66, 250.122, 220.82, 314.16(B)) so the math is defendable when an inspector asks. Always confirm against the NEC edition adopted by your local Authority Having Jurisdiction (AHJ).
What is Field Mode?
Field Mode enlarges tap targets and adds haptic confirmations so the app stays usable with gloves on at the job site.
How does the license stamp on PDFs work?
Go to Settings → License Information and enter your name, license number, and state. That information renders into every PDF you export. You are responsible for the accuracy of the credentials you enter. Information stays on your device and is only written into PDFs you export.
How accurate are the calculations?
Conduit Fill computes deterministically from published NEC tables. However, calculations may contain bugs or transcription errors and Conduit Fill is NOT a substitute for the National Electrical Code, the AHJ, or a licensed electrician. Always verify every input and every output before relying on a result for any installation.
How do I report a calculation error?
Email support@pandataps.com with: (1) the input values you entered, (2) the result Conduit Fill returned, (3) your expected result, (4) the NEC table or section reference, and (5) the NEC year selected. We respond within 24 hours.
How do I delete my data?
All data is stored locally on your device. To delete: Settings → Account & Data → Delete All Projects wipes the local database. Uninstalling the app also removes all data.
How do I cancel my subscription or get a refund?
Subscriptions are managed by Apple. To cancel: open the iOS Settings app → Apple ID → Subscriptions → Conduit Fill. For refunds, visit reportaproblem.apple.com. Panda Taps LLC has no access to your billing details. The Lifetime purchase has no recurring charges to cancel.
What permissions does Conduit Fill require?
Camera permission only if you tap the camera icon to capture a photo for a project. Photo library access only if you choose to import an existing image. Conduit Fill never accesses these in the background and never enumerates your photo library.
Is my data shared with any third party?
No. Conduit Fill has no third-party analytics SDKs, no advertising SDKs, and no tracking SDKs. Calculations, projects, photos, and license-stamp information all stay on your device. See the Privacy Policy for full details.
