What experiments did thomis Edison conduct with electricity?

Will the supply company allow you to install a double pole isolator switch between the cut out fuse and the consumer unit and if so where can you buy one? What step down transformer need to supply fluorescent lamp in watts? Is green ground in an extention cord? How is a rheostat use as a potential divider? How do you install conduit on pull box? How will a current change if the resistance of a circuit remain constant while the voltage across the circuit decreases to half its original value? Red light on top of electrical transformer? What type of magnet has an iron core and electric current? Why are household electric wires covered with plastic or rubber? What voltage would you expect to measure across closed switch? Where do you install GFI devices? Will turning off the main breaker turn off all the power to the circuit breaker box? Is hydro electricity one word? What is conclusion of schmitt trigger? What is the percentage voltage drop for feeders? What is transient response in circuit analysis? Does electrical tape stick to would? What does plc chips stand for? Is universal motor type of inductin motor? How did the electrical generator change over time?