CONTACT US
Have a question about voltage drop calculations? Need technical assistance or want to provide feedback? Reach out via email and our team will respond as quickly as possible.
Email Us Directly
For all inquiries, feedback, bug reports, or partnership opportunities, please send us an email. We read every message and typically respond within 24-48 hours.
support@voltagedropcalculator.netGeneral Inquiries
Questions about the calculator, how to use features, or general feedback.
Technical Support
Help with calculations, NEC code questions, or technical issues.
Bug Reports
Found an error or issue? Let us know so we can fix it promptly.
Partnerships
Interested in collaboration or partnership opportunities.
What to Include in Your Email
Clear Subject Line
e.g., "Question about 3-phase voltage drop calculation" or "Bug report: incorrect wire resistance"
Detailed Description
For technical questions, include your input values (voltage, current, distance, wire size, etc.)
Screenshots (if applicable)
For bug reports, screenshots help us identify and fix issues faster
Browser/Device Info
For technical issues, mention your browser (Chrome, Firefox, Safari) and device type
RESPONSE TIME
- General inquiries: 24-48 hours
- Technical questions: 24 hours
- Bug reports: 12-24 hours
BEFORE YOU ASK
Check our resources—your question may already be answered:
IMPORTANT NOTE
While we strive to provide accurate information and helpful guidance, our responses should not be considered professional engineering advice. For critical installations, always consult with a licensed electrical engineer or refer to the official NEC code book.
FREQUENTLY ASKED QUESTIONS
Is the voltage drop calculator free to use?
Yes, all our calculation tools are completely free to use with no registration required. We believe essential electrical safety tools should be accessible to everyone.
How accurate are the calculations?
Our calculations use NEC Chapter 9 data and industry-standard formulas. Results are verified against engineering references and match hand calculations to 4+ decimal places.
Can I use these calculations for permits?
Our tools are designed for planning and verification. While many professionals use our results in permit applications, final approval depends on your local AHJ requirements.
Do you offer an API for developers?
We're currently developing an API for integration with other electrical design software. Email us at support@voltagedropcalculator.net if you're interested in being notified when it becomes available.