1. As long as no loops are formed, there is usually no problem!
2. If the original power system is a grounded power grid TN system and the load is connected to zero using protection: At this stage, when a small generator is used to replace the original power system. , the neutral line cannot be disconnected. It is recommended to repeat it on site once.
3. If the original power system is a computer system, the load adopts protective grounding: , there is no need to disconnect the neutral line of the switch, and it should be noted that the line neutral is well insulated from earth and must not be earthed; of course, at this time the neutral line may also be disconnected. of the switch, but it is necessary to ensure that when the power supply is restored to the network, the neutral line is in good contact and the synchronizationclosure is good, otherwise the neutral line switch will be harmful;
4, in short, do not disconnect the neutral line, do not enter the switch, it is important to maintain the continuous conduction of the neutral line, but there is no harm!
Three-phase three-wire system means a small grounding system without a neutral point. There is no neutral line here. If the neutral line is necessary, it must be connected to a single-phase transformer. which converts 380 V to 220 V.
The generator must not (cannot) share a neutral line with the mains, and the system must be an independent system. If it is forcibly connected to the electrical network, the generator may be damaged.