Council for Registered Gas Installers was created in 1970.

Most cable installers require a high school diploma, GED or an equivalent degree. Cable installers should also have excellent listening and communication skills,

You can see reviews of hydro hot tub installers on yelp . You can also check the installers or company and they should list reviews of what work they have done or check with the BBB.

Roofers

Yes, Its the same type of cable used by satellite TV installers.