Hydro-Québec Blue Book

Rule Blue Book 2.4.2.1

2.4.2.1

If a building is supplied by more than one service loop at the same voltage, any modification to one or more service entrances must not result in an i...

Débloquez l'analyse complète de la règle

Cette règle a été entièrement auditée et analysée. Connectez-vous pour demander à Henri les calculs exacts, les exceptions et les exigences.

Demander à Henri
🧮

Smart Calculators

Henri uses this rule to automatically calculate wire sizing, voltage drop, and box fill.

🔍

Cross-Referenced

Instantly view how this rule interacts with Utility Manuals and Appendix B.

⚡️

Jobsite Ready

Accessible via mobile with offline caching capabilities for remote locations.

Solidmind is an independent tool, not affiliated with or endorsed by the CSA Group or the Régie du bâtiment du Québec (RBQ). The information provided by Henri and our reference tools are for informational purposes only and do not replace official provincial or territorial electrical codes. While designed to help, they may not always be 100% accurate. Always rely on your professional expertise and primary source documents to ensure compliance and safety.

© 2026 ™ Solidmind. All rights reserved.