How do I know the direction of the wires in my home building?

1. The embedded construction of commercial housing shall be carried out according to the drawings, which can be referred to if conditions permit;

2, the general rule, from the distribution box, lighting independent circuit, go to the switch panel above the ceiling;

The sockets in the kitchen and bathroom have separate circuits;

One or two sockets per room;

Separate air conditioning;

The water heater is alone;

Other separate weak current;

Other special appliances are all used alone;

3. According to the above general rules, we can find out the direction of related lines. If it is decoration, many things may have changed, but there are connection points in places such as ceilings. Just try it.

For reference.