TrueFault Terms of Use

509 Electric · Last updated: August 11, 2026

What TrueFault is

TrueFault is a field aid, not a stamped engineering calculation. Verify inputs, equipment ratings, installation conditions, applicable requirements, and results before use.

TrueFault is not an arc-flash or PPE calculator, a code-compliance certification product, an engineering stamp, or a substitute for field verification by a qualified professional.

Your review responsibility

Calculations, one-lines, PDF labels, and reports require your review before use. You are responsible for confirming utility data, equipment nameplates, conductor details, installation conditions, and applicable code or engineering requirements.

TrueFault Pro

TrueFault Pro is a non-consumable, one-time App Store purchase. It does not renew, and eligible purchases can be restored through the same Apple ID.

Your data

Calculations, projects, and settings are stored on your device unless you export, share, or back them up through services you choose. Apple handles App Store purchase processing.

No warranty; limitation of liability

TrueFault is provided as a professional aid on an "as is" basis without warranties of any kind. Results depend on your inputs and assumptions and must be independently verified by a qualified professional. To the maximum extent permitted by law, 509 Electric LLC is not liable for decisions made from, or damages arising out of, use of TrueFault.