Restaurant Kitchen Electrical Requirements 2026: Load Calculations, Circuit Planning & Global Standards
Why Electrical Planning Matters Before You Specify Commercial Kitchen Equipment
One of the most costly mistakes in a commercial kitchen fit-out is specifying equipment before the electrical infrastructure is confirmed. A hotel kitchen that draws 180 kW at peak load needs a completely different supply arrangement than a 60-seat restaurant running 70 kW of connected load. Understanding restaurant kitchen electrical requirements upfront prevents expensive rewiring, delayed openings, and equipment that cannot run at full capacity.
This guide covers the core electrical standards, load calculation methodology, and circuit planning principles that apply to commercial kitchens globally — from 208V/60Hz installations in North America to 380V/50Hz three-phase systems across Europe, the Middle East, and Africa.
How to Calculate Total Electrical Load for a Restaurant Kitchen
Start by listing every piece of equipment and its rated wattage. The table below shows typical connected loads for common commercial kitchen equipment, based on Grace Kitchen Equipment’s standard export specifications:
| Equipment | Typical Connected Load | Recommended Circuit Breaker |
|---|---|---|
| Combi Oven (10-tray, electric) | 14–18 kW | 32A / 3-phase |
| Commercial Convection Oven | 6–10 kW | 20–25A |
| Electric Range (4-burner) | 12–16 kW | 32A / 3-phase |
| Induction Wok Range (single) | 5–8 kW | 20–32A |
| Commercial Dishwasher (hood type) | 12–18 kW | 32–40A / 3-phase |
| Commercial Refrigerator (upright) | 0.3–0.5 kW | 10–16A |
| Walk-In Cold Room (5m³) | 1.5–3 kW | 16–20A |
| Commercial Deep Fryer (2-tank) | 10–14 kW | 25–32A |
| Electric Griddle (900mm) | 6–9 kW | 20–25A |
| Exhaust Hood (fan motor) | 1.5–4 kW | 16A |
To calculate your total demand load, do not simply add all connected loads. Apply a demand factor — typically 0.65–0.80 for commercial kitchens, meaning not all equipment runs simultaneously at full rated power. For a kitchen with 120 kW of connected load, your design load would be approximately 78–96 kW. Add a further 20% safety margin to allow for future equipment additions and to prevent running the distribution panel at maximum capacity.
Three-Phase vs Single-Phase Power: Which Does a Commercial Kitchen Need?
Most commercial kitchens above 30 seats require three-phase power supply.
- Single-phase supply (230V/50Hz or 120V/60Hz) is suitable for small cafés, grab-and-go units, or equipment-light operations. Maximum practical load is around 23 kW on a 100A single-phase supply at 230V.
- Three-phase supply (380–415V/50Hz or 208–480V/60Hz) is required for combi ovens, hood-type dishwashers, high-output electric ranges, and central refrigeration systems. A 63A three-phase supply at 400V delivers up to 43 kW — far more headroom for heavy cooking equipment.
For hotel kitchens or central production kitchens serving multiple outlets, a dedicated transformer and main distribution board (MDB) sized at 200–400A three-phase is standard. Grace Kitchen Equipment’s project team provides electrical load schedules as part of every free 3D kitchen layout package — helping developers confirm infrastructure requirements before tendering begins.
International Voltage and Frequency Standards for Commercial Kitchens
If you are importing commercial kitchen equipment from China, confirming the correct voltage and frequency configuration is critical. Equipment built for export at 380V/50Hz three-phase is compatible with most of Asia, the Middle East, Africa, and Europe. North American projects (120/208/240V, 60Hz) require specific factory configuration.
| Region | Standard Voltage (3-phase) | Frequency |
|---|---|---|
| China / Most of Asia | 380V | 50Hz |
| Europe / UK | 380–415V | 50Hz |
| Middle East (UAE, Saudi Arabia) | 380–415V | 50Hz |
| Africa (most countries) | 380–415V | 50Hz |
| North America | 208V / 480V | 60Hz |
| Japan | 200V | 50/60Hz |
Grace Kitchen Equipment fabricates all export equipment to the buyer’s specified voltage and frequency. Confirmation of electrical specification — including whether gas or electric is required for each appliance — is part of our standard order documentation alongside CE Declaration of Conformity and stainless steel material certificates.
Circuit Planning by Equipment Zone
Professional kitchen electrical design divides the kitchen into dedicated zones, with separate circuits for each. This limits the impact of a tripped breaker and simplifies fault-finding during operation.
Cooking Zone
Run dedicated three-phase circuits for each major appliance — combi oven, range, and griddle should each have their own breaker. Never daisy-chain high-load cooking equipment. Minimum cable rating: 6mm² for 32A circuits, 10mm² for 40–50A circuits at 380V in conduit. Because Grace Kitchen Equipment fabricates cooking equipment to exact project specifications — including custom wattage outputs for specific circuit constraints — sizing can be matched to your panel design rather than requiring you to upgrade the panel to match standard catalogue wattages.
Cold Room and Refrigeration Zone
Refrigeration equipment should be on a separate circuit from cooking equipment to prevent voltage fluctuations during heavy motor start-up from affecting temperature controllers. For projects in hot climates with ambient temperatures above 38°C — sub-Saharan Africa, the Arabian Gulf, South and Southeast Asia — specify equipment with T3- or T4-rated compressors that handle higher condensing temperatures without efficiency loss. This is standard specification for Middle East and African installations.
Warewashing Zone
Hood-type dishwashers draw 12–18 kW and require a dedicated 32–40A three-phase breaker with a dedicated neutral. Do not share this circuit with other equipment. A surge protection device (SPD) on the dishwasher circuit is good practice in areas with unstable grid supply — particularly relevant for project sites in emerging markets where voltage fluctuation is common.
Ventilation Zone
Exhaust fans and make-up air units should be on their own circuit, interlocked with cooking equipment where local fire codes require it. Fan motors typically draw 1.5–4 kW but have high inrush current at start-up — size the breaker at 1.5–2× the running current rating.
Common Electrical Mistakes in Commercial Kitchen Projects
- Specifying electric equipment without confirming available supply amperage. A hotel developer in West Africa recently had to down-spec from a 20-tray combi oven to a 10-tray model because the transformer capacity had already been committed to HVAC loads. The right conversation sequence is: confirm electrical capacity first, then specify equipment.
- Ignoring voltage drop on long cable runs. In large hotel kitchens where the main distribution board is 50–80 metres from the cooking line, under-sized cable causes voltage drop that degrades equipment performance and can void manufacturer warranties.
- Not accounting for equipment start-up surge current. Refrigeration compressors draw 3–6× their running current for 1–3 seconds at start-up. Breakers must be rated for this inrush, or nuisance tripping will follow during every morning start-up cycle.
- Ordering equipment at domestic voltage when the site runs industrial voltage. Equipment ordered at 220V single-phase cannot safely operate on a 380V three-phase supply without a step-down transformer. Confirm the site supply specification before placing any equipment order — and get it in writing from the site’s electrical engineer.
Working with a manufacturer that confirms electrical configuration in writing before production starts eliminates most of these errors. Grace Kitchen Equipment issues a formal electrical specification confirmation sheet with every order, listing each appliance’s voltage, phase, frequency, rated wattage, and recommended breaker size.
Relevant Electrical Standards for Commercial Kitchen Installations
Applicable standards vary by country. The most commonly referenced for commercial kitchen electrical installations worldwide are:
- IEC 60364 — Low-voltage electrical installations, used as the basis for national codes across Europe, Africa, and the Middle East
- NFPA 70 (NEC) — US National Electrical Code, applied in North America and many territories
- BS 7671 — UK Wiring Regulations (18th Edition), applied in the UK and many former British territories including parts of East and West Africa
- UAE DEWA / ADDC requirements — local utility standards for Dubai and Abu Dhabi commercial installations
- Saudi Electricity Company (SEC) standards — applied in Saudi Arabian commercial projects, alongside SASO equipment certification requirements
Always engage a licensed electrical contractor familiar with local code requirements early in the kitchen design process. An electrical load schedule provided by your equipment supplier makes the contractor’s work significantly easier — and typically reduces the electrical design fee as well.
Get Your Kitchen Electrical Specification Right from Day One
For hotel developers, project consultants, and restaurant operators sourcing commercial kitchen equipment, Grace Kitchen Equipment provides custom fabrication to your exact electrical specification — voltage, phase, frequency, plug type — with no minimum order requirement for standard models. Factory-direct pricing means a full equipment package for a 100-seat restaurant kitchen typically runs USD 45,000–95,000 FOB, depending on specification, with no distributor margin applied.
Every project order includes a free electrical load schedule and 3D kitchen layout design, giving your electrical contractor a complete picture before they begin the distribution board design.
Request your free 3D kitchen layout design today — project@gracekitchen.com or WhatsApp +86 158 1364 3427.
Frequently Asked Questions: Restaurant Kitchen Electrical Requirements
What is the minimum electrical supply required for a commercial restaurant kitchen?
Most commercial kitchens require a minimum three-phase electrical supply. A 60-seat restaurant with electric cooking equipment typically needs 63–100A three-phase (380–415V/50Hz), providing 40–70 kW of usable capacity. Smaller cafés with gas cooking and minimal electric equipment may operate on 32–63A single-phase, but this limits future equipment additions.
What is the typical electrical load for a hotel kitchen?
A full-service hotel kitchen serving 200–400 covers typically has a connected load of 150–300 kW, with a design load (applying a 0.65–0.75 demand factor) of 100–225 kW. This requires a dedicated 200–400A three-phase supply at 380–415V, plus a separate main distribution board (MDB) for the kitchen area.
Do Chinese commercial kitchen equipment manufacturers configure equipment for 60Hz markets?
Yes. Reputable Chinese manufacturers configure equipment for 60Hz markets including North America, Japan, and parts of South America at the factory level. This must be specified at order placement. Lead times for non-standard electrical configurations are typically the same: 25–45 days from order confirmation.
What circuit breaker size do I need for a commercial combi oven?
A 10-tray electric combi oven rated at 14–18 kW at 380V three-phase requires a dedicated 32A three-phase circuit breaker with 6mm² supply cable in conduit. A 20-tray combi oven (22–28 kW) requires a 40–50A three-phase breaker with 10mm² cabling. Always use a dedicated circuit.
Can my equipment supplier provide an electrical load schedule?
A professional commercial kitchen equipment manufacturer will provide a full electrical load schedule listing each appliance’s rated wattage, phase requirement, voltage, frequency, and recommended breaker size. Grace Kitchen Equipment includes this as standard documentation with every project order, alongside the free 3D kitchen layout design service.