How many wires do emergency lights, emergency exit lights and evacuation lights wear respectively?

Usually 3 or 4, depending on the drawing requirements.

When there are three lines, they are live line, zero line and ground line respectively;

One emergency light line illuminates four lines, according to the form and requirements of emergency light box.

Evacuation indicator:

Three lines: one for each fire;

Four wires: (lamp with battery): floating charge wire (fire), power wire (fire), neutral wire and grounding wire.

Extended data

The safety exit is an escape exit in various public places and an important safety facility in crowded places. It is the indicator light for people to reach the safety zone, so ensuring the smooth exit is an important measure to prevent mass casualties. In the event of a safety accident, all personnel in crowded places quickly escape from the scene of the accident mainly through various safety exits, and rescuers also enter the scene of the accident mainly through safety exits to rescue trapped people or save property.

References:

Baidu Encyclopedia-Exit Indicator