The salary of a cable installer can vary depending on whether they are freelance or employed, what the project is, and where they are working in the world. Salary can even vary by state. Below is a rough estimate:

The Indeed salary estimate - $15.02 per hour in the United States.
According to Payscale - about $42,233 annually and $15.22 on an hourly basis.
Glassdoor - $46,503 per year in the United States.
ZipRecruiter - professionals earn about $42,632.