What is the generator load limit on the ground when N1 is between 70-100%?

The generator load limit on the ground when N1 is between 70-100% is set at 100%. This limit is established to ensure that the electrical system does not become overloaded while operating at elevated engine RPMs. When the engines are operating within this N1 range, they are capable of supplying their maximum output, and allowing for full generator capacity ensures that all systems can function properly without risking damage or malfunction due to excess load.

The other options represent load limits that would not support safe operational practices under these conditions. Setting the limit lower than 100% would not take full advantage of the available electrical power, potentially leaving critical systems underpowered, while exceeding 100% could cause overheating or other issues with the generators, especially in ground operation where cooling is less effective compared to flight conditions. Hence, 100% is the ideal and safe operating threshold for generator load on the ground within the specified N1 range.