Most sign companies in the US do not have real, live electricians on the payroll. The typical sign shop doesn’t want to pay what a licensed electrician would demand for wages, so lesser paid employees are trained to assemble and wire internally-illuminated signs, and service them after installation. The learning curve is not steep, as electric signs are very simply built. These employees will have varying degrees of electrical knowledge and ability, ranging from people who are very experienced to complete novices. Pre-cut knock-down kits are available that allow practically anyone to put together lighted signs with a minimum of fabrication equipment. They can be assembled with screws, high-bond adhesives or by welding. Translucent vinyl lettering can be used for the plastic faces, eliminating the need for painting. This type of work can be done by the most unskilled labor. It can be done in someone’s garage.
In fact, if the general public in this country knew how inexperienced some people are who work on electric signs, they would be surprised.
In the US, using unskilled workers for this type of electrical work is usually not a problem for licensing authorities. Sign companies in most municipalities are legally allowed to do limited electrical work without a license, without any credentials at all, in fact. Further, after paying the fees and receiving an inspection of a sample completed sign, most any shop may receive UL certification.
So just as practically anyone in this country can start a sign company and be a “sign designer,” practically anyone can make electric signs, too. I’m not saying this is bad, necessarily. But just as I would like to see sign makers strive for better design work and a better understanding of design principles, I would also like to see sign makers improve their knowledge of electricity and their understanding of basic electrical troubleshooting.
Though this site will be primarily devoted to design, there will also be posts related to lighted signs.