Terms of Use
Fault Current & SCCR Label
Last updated: 25 September 2026
These terms are between you and Uladzislau Yasinski (“we”, “us”), the developer of Fault Current & SCCR Label (the “App”), published under the Field Tools name. Contact: support@fieldtools.app.
By downloading or using the App, you agree to these terms. If you do not agree, do not use the App.
The download, the payment, and the license to run the App on Apple-branded devices are also covered by Apple’s Licensed Application End User License Agreement (the “Apple EULA”). If a line in these terms conflicts with a rule Apple requires in the Apple EULA, the Apple EULA controls on that line. Apple is not a party to these terms, except for the third-party rights stated in the Apple section below.
The App
The App estimates available fault current with a point-to-point method and conductor C values published by Eaton Bussmann, and it compares that current with an AIC or SCCR you enter. You can mark a calculation as NEC (United States) or CEC (Canada). With Pro, the App can hold a tree of points, add motor contribution, start from a current you already know, print and export 110.24-style labels, list equipment SCCR, save named jobs, and write a method report.
The free App covers one point: source, transformer, one conductor run, the resulting current, and one AIC or SCCR comparison. Pro is the one-time unlock described on the App Store product page at the time you buy. IEC 60909 is not part of this version.
The App is a field aid. It is not a short-circuit study, not a stamped engineering deliverable, and not a determination by the engineer of record or the authority having jurisdiction. You are responsible for the inputs, the code edition that applies to the job, the equipment ratings, and the decision to use or not use a result. A label the App lays out does not, by itself, satisfy NEC 110.24 or any other rule.
License
We grant you a personal, non-exclusive, non-transferable, revocable license to use the App on Apple devices that you own or control, as permitted by the Apple Media Services terms and the Apple EULA.
You do not receive title to the App. You may not copy it except as iOS allows, sell it, rent it, reverse engineer it except where the law forbids that limit, or use it to build a competing data set of the published C values. The calculation numbers, job names, and reports you enter belong to you. We claim no rights in them.
Pro
Pro is a non-consumable in-app purchase. It is not a subscription and it does not renew. The price is the price Apple shows in the App at the moment you confirm the purchase. We do not store your card.
The purchase is tied to your Apple ID. Restore Purchases, in the paywall and in Settings, asks Apple whether that Apple ID already bought Pro. After a successful purchase, we do not lock Pro again on that Apple ID. If the store is unreachable, the App may keep showing the last known Pro state until the next successful check.
Refunds and billing disputes are handled by Apple, under Apple’s terms. Family Sharing applies only if Apple offers it for this product.
Pro is a license to unlock features inside the App. It is not a contract for electrical design, inspection, or site work.
Acceptable use
Use the App lawfully. Do not rely on it as the sole basis for energizing equipment, selecting a protective device, or signing a label that a code or a contract requires a qualified person to prepare. Do not enter another person’s personal data into a job name or a note if you do not have a reason to keep it on the device.
No professional relationship
Installing the App, buying Pro, or emailing support@fieldtools.app does not make us your engineer, your inspector, or your employer’s consultant. A reply about a data-table error is not a review of your installation.
Disclaimers
The App and the C values are provided “as is” and “as available.” To the fullest extent the law allows, we disclaim implied warranties of merchantability, fitness for a particular job, and non-infringement.
We do not warrant that a result matches a utility study, a manufacturer’s let-through value, a later edition of a code, or the reading of the authority having jurisdiction. Published C values and the point-to-point method have limits. Your inputs can be wrong. The App can contain a defect. Check results that matter before you build, label, or energize.
Some places do not allow an exclusion of certain warranties. In those places, the exclusions apply only as far as the law allows.
Limitation of liability
To the fullest extent the law allows, we are not liable for indirect, incidental, special, consequential, or punitive damages, or for lost profits, lost work, a failed inspection, damage to equipment, or injury, arising out of your use of the App or your reliance on a result, a label, or a report.
Our total liability for a claim relating to the App is limited to the amount you paid us for Pro through Apple in the twelve months before the claim. If you use only the free App, that amount is zero.
Nothing in these terms limits liability for death or personal injury caused by negligence where the law does not allow that limit, or for fraud, or for any other liability that cannot legally be limited.
Apple
You acknowledge that these terms are between you and us, not Apple. Apple is not responsible for the App or its content, and Apple has no obligation to provide maintenance or support for the App.
If the App fails to conform to a warranty, you may notify Apple, and Apple may refund the purchase price of the App itself under Apple’s terms. To the maximum extent permitted by law, Apple has no other warranty obligation for the App. Any other claim, loss, liability, or damage arising from the App is our responsibility, within the limits in these terms.
Apple is not responsible for addressing a claim by you or a third party relating to the App or your possession and use of it, including product-liability claims, a claim that the App fails to conform to a legal requirement, and consumer-protection claims. If a third party claims that the App infringes that party’s intellectual property, we, not Apple, are responsible for the investigation, defense, settlement, and discharge of that claim, to the extent required by the Apple EULA.
You represent that you are not located in a country subject to a US government embargo or designated as a “terrorist supporting” country, and that you are not on a US government list of prohibited or restricted parties.
Apple and Apple’s subsidiaries are third-party beneficiaries of these terms. Once you accept them, Apple has the right to enforce them against you as a third-party beneficiary.
Ending use
You may stop using the App at any time by deleting it. We may stop offering the App or a feature, including if a store requires it. Deleting the App does not entitle you to a refund. A Pro purchase you already made remains subject to Apple’s rules on restore and refund.
Changes
We may update these terms by posting a new version and changing the date above. If you keep using the App after the new date, you accept the updated terms. If you do not accept them, stop using the App.
Law
These terms are governed by the laws of the place where Uladzislau Yasinski resides, without regard to conflict-of-law rules, except where the Apple Media Services terms or the Apple EULA must govern the download or the payment, and except where a consumer law in your place of residence gives you rights that cannot be waived.
Contact
Uladzislau Yasinski
Fault Current & SCCR Label