Fire protection is an essential aspect of any commercial kitchen construction. Here are some of the main fire protection elements that should be considered:

1. Automatic Fire Suppression System: This is one of the most critical fire protection elements for a commercial kitchen. It is a pre-engineered system designed to automatically detect and suppress fire in the cooking area. The system is typically installed above cooking appliances and uses a combination of wet chemicals and/or dry agents to extinguish the fire.

2. Fire-rated Construction: Commercial kitchens should be built with fire-resistant materials to prevent fire from spreading. This includes fire-rated walls, floors, and ceilings. Additionally, all ducts and vents should be made of non-combustible materials.

3. Portable Fire Extinguishers: Even with an automatic suppression system in place, portable fire extinguishers are still necessary. They can be used to extinguish small fires before they spread. At a minimum, Class K fire extinguishers should be installed in the kitchen for cooking fires.

4. Adequate Ventilation: Adequate ventilation is crucial for removing smoke and heat from the cooking area. It also helps to prevent the buildup of flammable gases. The ventilation system should be designed and installed to meet local codes and standards.

5. Proper Electrical Wiring: Electrical wiring should be installed to meet local codes and standards. The wiring should be properly grounded and protected from heat sources. All electrical equipment should be UL-listed or equivalent.

6. Maintenance: Finally, regular maintenance of all fire protection systems and equipment is essential to ensure they function properly in the event of a fire. Regular inspections, testing, and cleaning should be conducted according to local codes and standards.