An electric room was built in the residential property next to my home building, which contained a transformer meter or something. Is there radiation? It's close to my home, just behind the house.

The commercial power generally adopts three-phase four-limit, and the high-voltage part radiates, but the amount is very small. After being converted into low-voltage electricity by transformer, the radiation problem is basically not considered. But it is mainly the 50Hz low frequency noise of the transformer, which may affect the rest. Pay attention to find out what is high voltage, 1 10 KV and above, which is radioactive to people.