Question

this safety device was invented by Thomas Edison to protect electrical power system from the harmful effects of over current
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Answer 1

Answer:

hey mate

On January 27, 1880, Thomas Edison received U.S. Patent No. 223,898, which was simply titled “Electric Lamp.” Figure 1 from U.S. Patent 223,898

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Answer 2

Circuit Breaker

Explanation:

• With the installation of lighting in big metropoliss, Edison realised that short circuits which raised the current to extremely high levels can damag/impair the bulbs' filament  and destroy them. He then explored several options to mitigate this
• Thomas Edison then developed the idea for a circuit breaker in  the year 1879 and patented the idea the same year. A circuit breaker disconnects the electrical circuitry by opening a contact when the circulating electrical current reaches levels considered not safe for the system, that is overcurrent

To know more

Which first electrical item did Thomas Edison invent? - Brainly.in

https://brainly.in/question/10766153