1/17/2024 0 Comments 170ft 200 amp service wire size![]() You can’t talk about wire size without mentioning amperage. Remember that, especially when working in environments with extreme temperature fluctuations. Hotter temperatures require larger wire sizes, while smaller ones can use smaller ones. As the temperature around the wiring changes, so does its ability to carry electrical current. Temperature is another vital factor in wire size selection. Why? It helps to reduce voltage drop and electrical loss along the length of the wire. The longer the distance, the larger the wire size you’ll need. Now, let me share a handy little chart for wire sizes and their maximum amp ratings per the NEC: Wire Size (AWG/kcmil)įactors Influencing Wire Size Selection Distanceĭistance plays a huge role in choosing the right wire size for a 400 amp service. Thus, it’s crucial to follow the NEC guidelines. The charts are based on the National Electrical Code (NEC), and they help you ensure that your wires are suited to handle the right amount of amps safely. Wire size charts and the National Electrical Code (NEC) are important when planning electrical projects. Wire Size Charts and National Electrical Code Whether you choose copper or aluminum, using the right wire size will ensure the safety and efficiency of your electrical system. That said, checking with a professional electrician is still recommended to ensure you select the correct wire sizes for your project. Aluminum: 1,000 kcmil for the main wire, 1 AWG for the ground wire.Copper: 600 kcmil for the main wire, 3 AWG for the ground wire.Here’s a quick summary of the ideal wire sizes: ![]() And for the ground wire, go with a 1 AWG aluminum wire. Now, if you prefer to work with aluminum wires, they can be more cost-effective and lightweight than copper.įor a 400 Amp service, you’ll want to use a 1,000 kcmil aluminum wire. ![]()
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