Whether the local equipotential bonding and lightning protection grounding in the bathroom can be sh

It's not a major, but I usually cooperate with the electrical major when I do the design, and I know the basic practices, but the description may not be very professional, don't laugh.

1. The transformer should be grounded separately (grounding resistance 4), and the grounding network is generally set along the periphery of the foundation, which is required to leave according to the specification, but sometimes it cannot be done in the transformer room, and the spacing can be smaller.

2, the house lightning protection grounding can be shared with other grounding, called joint grounding, at this time the grounding resistance 1 (separate lightning protection grounding 10), when this requirement is reached, can not lead to grounding.

3. Equipotential is generally used in the bathroom, and the method is to connect a copper wire from the ground wire of the household distribution box (or welded into a network by the main reinforcement in the surrounding beam) to set up a junction box, and connect the indoor metal components to this grounding wire.

Regarding your question, I consulted the professionals again, maybe all you can do now is to find a way to do a good grounding from the outside and then use flat steel to introduce it into the room and connect it to the transformer. Do not go to the grounding of the shared house, otherwise if the transformer leaks, it will affect the whole building!

In accordance with the requirements of modern lightning protection. Building lightning protection grounding and building equipotential bonding should be a system. That is to say, the lightning rod of the new building and the steel columns, main reinforcements, metal doors and windows, metal pipes, etc. of the building are connected.