What To Know
- The NEC code for range hoods also specifies the requirements for the exhaust ductwork that connects the range hood to the outside of the house.
- The NEC code for range hoods also requires that fire suppression systems be installed in commercial kitchens where the range hood is located over a cooking appliance that produces grease-laden vapors.
- Yes, the NEC code requires that fire suppression systems be installed in commercial kitchens where the range hood is located over a cooking appliance that produces grease-laden vapors.
The National Electrical Code (NEC) is a set of regulations that govern the installation and maintenance of electrical systems in the United States. These regulations are essential for ensuring the safety of electrical installations and preventing fires and other hazards. The NEC code for range hoods specifies the requirements for the electrical installation of range hoods, which are essential for removing cooking fumes and odors from the kitchen.
Sizing the Range Hood
The first step in installing a range hood is to determine the correct size for your kitchen. The NEC code requires that the range hood be at least 30 inches wide and have a minimum airflow capacity of 100 cubic feet per minute (CFM). For larger kitchens, a larger range hood with a higher CFM rating may be required.
Electrical Wiring
The NEC code for range hoods specifies the requirements for the electrical wiring that supplies power to the range hood. The wiring must be at least 14 gauge and must be protected by a circuit breaker or fuse. The circuit breaker or fuse must be sized to handle the maximum amperage draw of the range hood.
Exhaust Ductwork
The NEC code for range hoods also specifies the requirements for the exhaust ductwork that connects the range hood to the outside of the house. The ductwork must be made of metal and must be at least 6 inches in diameter. The ductwork must be installed in a way that prevents grease and other debris from accumulating inside the ductwork.
Make-Up Air
The NEC code for range hoods also requires that make-up air be provided when the range hood is in operation. Make-up air is fresh air that is brought into the kitchen to replace the air that is exhausted by the range hood. Make-up air can be provided by opening a window or door, or by installing a dedicated make-up air system.
Fire Suppression Systems
The NEC code for range hoods also requires that fire suppression systems be installed in commercial kitchens where the range hood is located over a cooking appliance that produces grease-laden vapors. Fire suppression systems can be either wet chemical or dry chemical systems.
Inspection and Maintenance
The NEC code for range hoods requires that range hoods be inspected and maintained on a regular basis. The inspection and maintenance should be performed by a qualified electrician. The electrician should check the electrical wiring, the exhaust ductwork, and the make-up air system to ensure that they are operating properly.
The Bottom Line
The NEC code for range hoods is essential for ensuring the safety of electrical installations and preventing fires and other hazards. By following the requirements of the NEC code, you can help to ensure that your range hood is installed and maintained properly.
Answers to Your Most Common Questions
Q: What is the minimum size for a range hood?
A: The NEC code requires that the range hood be at least 30 inches wide and have a minimum airflow capacity of 100 cubic feet per minute (CFM).
Q: What type of wiring is required for a range hood?
A: The wiring must be at least 14 gauge and must be protected by a circuit breaker or fuse. The circuit breaker or fuse must be sized to handle the maximum amperage draw of the range hood.
Q: What type of ductwork is required for a range hood?
A: The ductwork must be made of metal and must be at least 6 inches in diameter. The ductwork must be installed in a way that prevents grease and other debris from accumulating inside the ductwork.
Q: Is make-up air required for a range hood?
A: Yes, the NEC code requires that make-up air be provided when the range hood is in operation. Make-up air can be provided by opening a window or door, or by installing a dedicated make-up air system.
Q: Are fire suppression systems required for range hoods?
A: Yes, the NEC code requires that fire suppression systems be installed in commercial kitchens where the range hood is located over a cooking appliance that produces grease-laden vapors.
