Anything more than this length, such as panels 200 ft away or wiring that runs 500 ft, is subject to a higher voltage loss and needs much larger wires. However, you should note that the list is only applicable to less than 100 ft. If you were looking for the recommended wire size for other service panel ratings, the wire size chart below might be useful. This is ideal, since the 200 amp service cable price per foot for aluminum is 20 to 50% less expensive than copper. On the other hand, if you are tight on budget, you can use 500 kcmil aluminum. This suggested size wire for a 200 amp panel will work for both single-phase and three-phase installations. In this case, instead of using a 2/0 copper wire, you should use 300 kcmil copper with only a 2.78% voltage drop. As a result, you need to use a much bigger wire size than the one for short-distance setups. When looking for a 200 amp service entrance wire size, you should consider the 3% allowable voltage drop by NEC standards. Utilizing it for a longer distance might cause a higher percentage of voltage drop, which can also lead to potential hazards in an electrical system. However, this size is only appropriate for applications at less than 100 feet. It should support the current load of the panel, which may vary depending on the application length due to voltage drops.įor example, we usually pick a 2/0 gauge copper cable for 200 amp service. Distance?Īside from the branch circuit wiring, another important thing to consider when installing a service panel is the wire used for the service entrance. What is the Recommended Size Wire for a 200 Amp Service Panel at 300 Ft. Pros and Cons of Copper Wire and Aluminium Wire.Recommended Wire Sizes for Different Service Panels.What is the Recommended Size Wire for a 200 Amp Service Panel at 300 Ft.
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