How many amps are supplied by using a 10 AWG wire at its maximum capacity?

In determining how many amps a 10 AWG wire can carry at its maximum capacity, it's important to refer to the National Electrical Code (NEC) standards for wire sizes and their corresponding ampacity. A 10 AWG wire typically has a maximum ampacity of 30 amps for general applications when considering factors like insulation type and installation methods. This ampacity can vary slightly based on specific conditions such as ambient temperature and whether the wire is run in a conduit.

The value of 28 amps might be mentioned in specific contexts or applications, such as when derating factors are applied or in situations where additional safety measures are advised, but generally, the national standard consideration for 10 AWG wire is 30 amps. Therefore, when considering the choices provided, the best reflection of practical and safe usage aligned with generalized NEC calculations would point towards 30 amps as the most widely accepted maximum for 10 AWG wire in usual circumstances, while 28 amps might be a consideration in certain specific settings.

Understanding the ampacity of various wire sizes is crucial for ensuring electrical safety and efficiency, which is a fundamental principle in electrical work.