What size TGGT wire is required for a 30 amp load?

The correct size for TGGT wire required for a 30 amp load is indeed 10 gauge. This is based on the National Electrical Code (NEC) guidelines, which outline that 10 gauge wire is the minimum size recommended for circuits carrying currents up to 30 amps to ensure safe operation and avoid overheating.

Using wire that is too small for the amperage can lead to increased resistance, which can result in voltage drops and overheating of the wire, posing safety hazards such as fire risks. Therefore, for a 30 amp load, 10 gauge wire is specified to handle the electrical load safely, ensuring efficient performance without excessive heat generation.

The other gauge options, such as 12 gauge, 14 gauge, and 16 gauge, would not be suitable for a 30 amp load, as their current carrying capacities are lower, which could lead to potential safety hazards and code violations.