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By accessing or using Premium Electrical Calculators ("the Site"), you agree to be bound by these Terms and Conditions. If you do not agree, you must exit the Site immediately. Your continued use of the Site constitutes your acceptance of these terms.
All calculators, tools, and results provided on this Site are intended for general reference and educational purposes only. The results generated by these tools should never be used as the sole basis for any electrical installation, design decision, or code compliance determination. Always consult a licensed electrician or electrical engineer before proceeding with any electrical work.
While every effort has been made to ensure the accuracy of the calculations and information provided, Premium Electrical Calculators makes no representations or warranties of any kind, express or implied, regarding the completeness, accuracy, reliability, or suitability of the information. All results should be independently verified against the current edition of the National Electrical Code (NEC) and all applicable local codes before use.
To the fullest extent permitted by applicable law, Premium Electrical Calculators, its owner, and its contributors shall not be liable for any direct, indirect, incidental, consequential, or punitive damages arising out of or in connection with your use of, or inability to use, this Site or its tools. This includes but is not limited to damages resulting from errors or omissions in calculations, reliance on information provided, or any electrical work performed based on results from this Site.
The National Electrical Code (NEC) is updated on a regular cycle. The calculations on this Site are based on NEC standards available at the time of development. It is your responsibility to verify that all calculations comply with the current adopted edition of the NEC and all applicable local amendments in your jurisdiction.
Use of this Site does not create any professional, contractor, or fiduciary relationship between you and Premium Electrical Calculators or its owner. The tools provided are informational only and do not constitute professional electrical advice or engineering services.
You assume full responsibility for how you use the results generated by this Site. Any electrical work must be performed by a qualified, licensed electrician and must comply with all applicable codes, standards, and regulations. Premium Electrical Calculators is not responsible for any work performed, decisions made, or outcomes resulting from use of this Site.
Premium Electrical Calculators reserves the right to update or modify these Terms and Conditions at any time without prior notice. Your continued use of the Site following any changes constitutes your acceptance of the revised terms. It is your responsibility to review these terms periodically.
These Terms and Conditions shall be governed by and construed in accordance with the laws of the State of Arkansas, without regard to its conflict of law provisions.
Premium Electrical Calculators was designed and built by Benjamin Johnson, a commercial and industrial electrician based in Arkansas with six years of hands-on experience in the trade. Benjamin passed his Arkansas Journeyman Electrician licensing exam at 21 years old — two days before his 22nd birthday — making him one of the younger licensed journeymen in the state at the time.
Anyone who has spent time in the field knows the frustration of needing a quick, reliable calculation and coming up empty. The existing options are either buried behind a paywall, cluttered with ads and poor design, or — worst of all — built by people who have never actually picked up a pair of lineman's pliers. The math might technically be there, but the tool doesn't think the way an electrician thinks.
Premium Electrical Calculators was built to fix that. Every calculator on this site was designed from the ground up by someone who works in commercial and industrial electrical every day — someone who knows what information you actually need, how fast you need it, and how it needs to be presented to be useful in the field.
This site is built for tradesmen. Whether you're a journeyman running conduit on a job site, an apprentice double-checking your work, or a foreman doing takeoffs in the office, these tools are designed to give you fast, accurate, NEC-compliant answers without the hassle. No subscription. No download. No account. Just open it and use it.
Premium Electrical Calculators currently offers six professional-grade calculators covering voltage drop, conduit fill, ampacity, box fill, transformer sizing, and motor full load amperage — all built to NEC 2023 standards. Each calculator references the specific NEC table or article it pulls from, so you always know where the numbers are coming from. More tools are planned for future updates.
Every calculation on this site has been carefully verified against the National Electrical Code. That said, these tools are intended as a reference aid — not a replacement for professional judgment. Always verify results against the current adopted edition of the NEC in your jurisdiction, and never use any calculator as the sole basis for an installation decision. If you believe you've found an error, please reach out at contact@premiumelectricalcalculators.com. Accuracy matters, and we take it seriously.