With these three wires, you can't connect well? The old master reprimanded the new boy electrician in front of everyone, and the boy complained in a daze, "I did a good job, what's wrong?" It's really nothing to look for.
Did you spot the problem?
1. Yellow, green and red should be connected according to phase A, B and C;
2. The screw is a bit short, and the threaded buckle should come out 3~4 buckles;
3. The spring pad is installed at the end.
