Can the generator and utility power share the neutral line?

In general, it can be shared but there is some risk. The generator and mains share the neutral line: If your generator is some distance from the transformer and the working earth resistance is large, the three-phase load will be unbalanced when the generator is turned on. There will be voltage on the neutral line. At this time, if anyone works on the power line, there is a risk of electric shock. If you need to sign a safety agreement with the power utility for your own power supply, you can repeatedly ground it to the main neutral line (but this depends on the nature of your power line, and a protector leakage protection cannot be installed at the main neutral line). frontal)