There are many experts who work for electrical supply manufacturers. In fact, this is a major industry all around the world. You must keep in mind that industrial jobs, commercial construction, and residential homes all call for certain power lighting and wiring tasks. This is why manufacturers sell electrical supplies in bulk to distributors and small dealers at wholesale rates. When you get involved with this field, you can expect to work with an array of fuse boxes, cable outlets, wire fittings, and plug conduits on a regular basis.
As with most fields, there is some training involved if you plan on working for an electrical equipment supply manufacturer. After all, it is important for you to know as much as possible about lighting switches, wiring connectors, power cables, and fuses for power boxes. If you work at a factory that manufacturers these supplies, you will also need to know more about the dealers and distributors that purchase them in bulk. Then again, if you are employed at a home improvement store that sells power lighting and wiring supplies to electricians and contractors, then you will need to know how to deal with customers. It is important to realize that different contractors will need different power cables, insulation materials, and lighting supplies. Therefore, it is your job to keep a surplus of these items in stock.
Any time you work as a professional in the electrical supplies industry, you will likely have to deal with buyers and electricians. This is just part of the job.