Terms of Use

Last updated: March 2026

Acceptance

By using WireRef.com you agree to these terms. If you do not agree, do not use this site.

Educational purpose only

All content on WireRef.com is provided for educational and reference purposes only. This site does not provide professional electrical engineering, contracting, or inspection services. Content is derived from publicly available editions of NFPA 70 (the National Electrical Code) and should not be treated as a substitute for the official code text, professional engineering judgment, or advice from a licensed electrician.

No professional advice

Nothing on this site constitutes professional advice. Electrical work is inherently dangerous and is regulated by local, state, and federal codes and ordinances. You must consult a licensed electrical professional before designing, installing, modifying, or inspecting any electrical system. WireRef does not know the specifics of your installation, local amendments, conditions of use, or applicable jurisdiction.

Accuracy and limitations

While we strive for accuracy, WireRef makes no warranty or guarantee that the information presented is complete, current, or error-free. The NEC is updated on a three-year cycle, and individual jurisdictions may adopt different editions or apply local amendments. Calculated values (such as voltage drop and ampacity) are based on standard conditions and may not reflect your specific installation parameters including but not limited to ambient temperature, conductor bundling, termination ratings, and equipment limitations.

State licensing and reciprocity data

WireRef provides information about electrician licensing requirements, continuing education, and reciprocity agreements for informational purposes only. This data is compiled from publicly available state licensing board records and is believed accurate as of the date shown, but licensing requirements change frequently and without notice. WireRef does not provide legal advice regarding licensing, and you should always contact the relevant state licensing board directly to confirm current requirements before making any licensing decisions, applications, or career plans based on information shown on this site. Reciprocity agreements between states may have conditions, limitations, or prerequisites not fully captured in our data. WireRef is not responsible for licensing denials, delays, or costs resulting from reliance on information shown on this site.

Permit fee estimates

Permit costs shown on WireRef are estimates based on publicly available fee schedules and may not reflect current rates, surcharges, or additional fees imposed by your local jurisdiction. Actual permit costs vary by jurisdiction, project scope, and valuation. Always confirm fees with your local building department before budgeting for a project.

Inspection checklists

Inspection checklists provided on WireRef are general educational references based on common NEC requirements and do not represent the specific inspection criteria used by any particular Authority Having Jurisdiction (AHJ). Inspectors may check items not on our lists, apply local amendments, or interpret code requirements differently than shown. Passing a WireRef checklist does not guarantee passing an actual inspection. Always consult your local building department for specific inspection requirements in your jurisdiction.

Limitation of liability

To the fullest extent permitted by applicable law, WireRef, its owners, contributors, and affiliates shall not be liable for any direct, indirect, incidental, consequential, special, or exemplary damages arising out of or in connection with your use of this site, including but not limited to damages for personal injury, property damage, loss of data, loss of profits, or business interruption, regardless of the theory of liability (contract, tort, strict liability, or otherwise), even if WireRef has been advised of the possibility of such damages.

You assume full responsibility for any decisions or actions taken based on information from this site.

Affiliate links

WireRef is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Some pages contain affiliate links to products. Clicking these links and making a purchase may result in WireRef earning a commission at no additional cost to you. Affiliate relationships do not influence the technical reference data, calculations, or NEC-based recommendations presented on this site. Product suggestions are based on the electrical specifications discussed on each page.

NEC trademark

NEC®, National Electrical Code®, and NFPA 70® are registered trademarks of the National Fire Protection Association (NFPA). WireRef is not affiliated with, endorsed by, or sponsored by NFPA. References to the NEC are for educational fair-use purposes. The official NEC text is available via NFPA’s free access portal.

User responsibility

You agree to: (a) verify all values against the officially adopted code edition in your jurisdiction; (b) consult a licensed professional before performing electrical work; (c) comply with all applicable local, state, and federal regulations; (d) not rely solely on this site for life-safety decisions.

Indemnification

You agree to indemnify and hold harmless WireRef, its owners, and contributors from any claims, damages, or expenses (including attorney fees) arising from your use of this site or your violation of these terms.

Copyright & original content

All original content on this site - including editorial text, calculation methodologies, comparison narratives, project guides, and site design - is © 2026 WireRef. All rights reserved. NEC data is referenced under fair use for educational purposes; the underlying code text remains the property of NFPA. You may not reproduce, distribute, or create derivative works from WireRef’s original content without written permission.

Cookies and local storage

WireRef uses Google Analytics 4, which may set cookies to collect anonymized usage data such as page views, referrer data, and general usage patterns. See our Privacy Policy for details and opt-out instructions. WireRef also uses your browser’s localStorage to save your selected state and job log entries. This data stays on your device and is never transmitted to our servers.

Governing law

These terms are governed by the laws of the State of Delaware, without regard to conflict of law principles. Any disputes arising from these terms or your use of the site shall be resolved in the state or federal courts located in Delaware.

Changes to terms

We may update these terms at any time. Continued use of the site after changes constitutes acceptance.

Contact

Questions about these terms may be directed to the site contact listed on the About page.