What electrical requirements should restaurants, retail stores, and medical offices plan for before opening?
The electrical requirements for opening a business depend heavily on the type of business. Restaurants, retail stores, and medical offices each have distinct load profiles, code requirements, and specialty trades. Planning these upfront — before you sign a lease — prevents expensive mid-project surprises.
Restaurants: high-demand kitchens and code requirements
Restaurant electrical planning centers on the kitchen: commercial ovens, hood ventilation, walk-in refrigeration, fryers, and dishwashers each draw significant power. Most commercial kitchens require 200–400 amp three-phase service. Beyond the kitchen, restaurants need GFCI protection in wet areas, dedicated circuits for POS systems, outdoor signage circuits, and often a grease trap alarm circuit. The National Electrical Code and local health department codes both apply — your electrician must be familiar with both.
Retail stores: lighting, signage, and flexibility
Retail electrical planning focuses on lighting quality, flexibility for fixture changes, and adequate power for POS systems, security cameras, and signage. LED lighting systems, track lighting, and programmable lighting scenes are common. Retail spaces often need a lighting control system and dedicated circuits for window displays and exterior signage. Plan for at least 15–20% spare panel capacity for future fixtures and equipment additions.
Medical offices: code compliance and reliability
Medical offices face the most demanding electrical requirements of the three. NEC Article 517 governs healthcare facility wiring — with specific requirements for patient care areas, wet procedure locations, and equipment grounding. Medical offices typically need isolated power panels in patient care rooms, dedicated circuits for medical equipment, and emergency lighting systems. If the office will perform procedures under anesthesia or use imaging equipment, requirements escalate significantly.
Evaluating your space before signing a lease
Before signing a commercial lease, have a licensed commercial electrician assess the space's existing electrical service, panel capacity, and condition. Many older commercial spaces have service panels inadequate for modern restaurant or medical use. A service upgrade can cost $10,000–$50,000+ depending on utility capacity and location — a fact worth knowing before you commit to a 10-year lease.
Published · ElectriScout Editorial