What size wire do i need for 125 amp service?
In general, for a 125 amp service, a common wire size that is often used is 1/0 AWG (American Wire Gauge) copper or 2/0 AWG aluminum wire. However, it is crucial to consult the local electrical code or have a qualified electrician assess your specific installation to determine the exact wire size requirements.
Factors that influence wire size selection include:
1. Ampacity: The wire size must be capable of safely carrying the maximum expected current without exceeding its ampacity. Ampacity charts provided by the National Electrical Code (NEC) can help determine the appropriate wire size based on the ampacity rating.
2. Voltage drop: Another consideration is voltage drop, which refers to the decrease in voltage that occurs as electricity flows through a wire. Voltage drop should be kept within acceptable limits to ensure the proper functioning of electrical equipment. The distance between the service panel and the utility connection is a factor in determining the acceptable voltage drop, and wire size is selected accordingly.
3. Wire type: Copper is a common choice for residential installations due to its superior conductivity and durability. Aluminum wire is often used for larger commercial or industrial installations. The appropriate wire type should be selected based on electrical code requirements and the recommendations of professionals.
4. Environmental factors: If the wire is exposed to harsh conditions, such as extreme heat or moisture, it may require additional protection or specific wire types.
To ensure compliance with local electrical codes and regulations, it is crucial to consult the appropriate authorities or seek professional assistance. An electrician can assess the specific requirements of your 125 amp service and provide the most accurate wire size recommendation for your installation.
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