TruePhase vs Grounded

Enter a circuit number to see its common US phase color, voltage system, panel position, neutral, ground, and field-convention note. Free lookup covers 120/240V single phase. A one-time TruePhase Pro purchase unlocks 120/240V high-leg delta, 120/208V, and 277/480V three-phase lookup, plus saved panels, project presets, custom phase colors and numbering, panel notes, load descriptions, 2-pole and 3-pole breaker labels, print-ready panel schedules, sharing, and CSV export. TruePhase is local-first and requires no account or sign-in. TruePhase is a field-convention reference, not a code-compliance guarantee or engineering design. Always verify field conditions, labeling, jurisdiction requirements, project standards, and site practice before pulling wire or energizing equipment.

Grounded is the field toolkit for electricians — built by a working electrician, not a software company. CALCULATORS • Voltage drop, wire & breaker sizing, conduit fill, box fill • Article 220 load calculations • Motor circuits, transformers, grounding & bonding • Ohm's law & three-phase power AI ASSISTANT • Ask code questions in plain English • Answers cite the relevant NEC articles • Built for the field — always verify with your local code PIPE BENDING • Live diagrams that draw your exact bend • Stub-ups, offsets, saddles, rolling offsets, and multi-bend SOLAR / PV • String sizing with cold-temperature voltage checks • Conductor, OCPD, and interconnection sizing • Solar production & payback estimating ON THE JOB • Reference tables: ampacity, conduit fill, torque specs • Wire color codes by voltage system • Notes — jot measurements offline, synced to your account • Panel schedules, job estimating, and hours tracking • Works offline in basements and new construction STUDY • NEC flashcards with spaced repetition • Exam prep built for the 2026 code cycle Built on the 2026 NEC, with 2023 supported. Core tools are free; Grounded Pro unlocks the full toolkit. GROUNDED PRO • Monthly — $8.99 • Annual — $79.99 (save 26%) Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in Settings → your name → Subscriptions. Terms of Service: https://www.groundedpro.io/terms Privacy Policy: https://www.groundedpro.io/privacy Grounded is a calculation aid — always verify with the NEC and your local AHJ. Not affiliated with NFPA.