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The current American version of the grounded plug, with two vertical blades and a round grounding pin was invented by Philip F. Labre, while he was attending the Milwaukee School of Engineering. It is said that his landlady had a cat which would knock over her fan when it came in the window. When she plugged the fan back in, she would get an electric shock. Labre deduced that if the plug were grounded, the electricity would go to earth through the plug rather than through the person holding it. He applied for a patent on 12 May 1927,[10] and was issued a US patent for grounding receptacle and plug in June 1928.[10] As the need for safer installations became apparent, earthed three-contact systems were made mandatory in most industrial countries.
Wikipedia contributors. "AC power plugs and sockets." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 16 Oct. 2012. Web. 22 Oct. 2012.
What else can I help you with?
What is the 4-prong to 3-prong wiring diagram for converting an electrical outlet?
To convert a 4-prong outlet to a 3-prong outlet, you need to connect the ground wire from the 4-prong outlet to the neutral terminal on the new 3-prong outlet. This allows the outlet to be safely used with older 3-prong devices.
Do you have a stove plug adapter that can convert a 4-prong outlet to a 3-prong outlet?
Yes, there are stove plug adapters available that can convert a 4-prong outlet to a 3-prong outlet.
How to replace a 2 prong outlet with a 3 prong outlet?
To replace a 2 prong outlet with a 3 prong outlet, you will need to turn off the power to the outlet, remove the old outlet, install a new 3 prong outlet, connect the wires correctly, and secure the outlet in place. It is important to follow safety precautions and consult a professional if needed.
How to change a 4-prong dryer outlet to a 3-prong outlet?
To change a 4-prong dryer outlet to a 3-prong outlet, you will need to disconnect the old outlet, remove the fourth prong, and connect the wires to the new 3-prong outlet following the correct configuration. It's important to turn off the power before starting and consult a professional if you're unsure.
What is the purpose of a 30 amp 4 prong to 3 prong adapter and how does it work?
The purpose of a 30 amp 4 prong to 3 prong adapter is to allow a device with a 3 prong plug to be connected to a 4 prong outlet. It works by converting the 4 prong outlet into a 3 prong outlet, enabling compatibility between the device and the power source.
How can I replace a 2 prong outlet with a 3 prong outlet in my home?
To replace a 2-prong outlet with a 3-prong outlet in your home, you will need to turn off the power to the outlet at the circuit breaker, remove the old outlet, install a new 3-prong outlet, connect the wires correctly (hot, neutral, and ground), and secure the outlet in place. It is important to follow safety precautions and consult a professional if you are unsure.
How can I safely convert a 2 prong outlet to a 3 prong outlet without a ground wire?
To safely convert a 2-prong outlet to a 3-prong outlet without a ground wire, you can use a GFCI outlet or hire a licensed electrician to install a grounding conductor.
How do you convert a 4 prong 240V outlet to a 3 prong 240V outlet?
Disregard the neutral
How can I safely convert a 4-prong dryer outlet to a 3-prong outlet for my dryer?
To safely convert a 4-prong dryer outlet to a 3-prong outlet for your dryer, you will need to replace the outlet and reconfigure the wiring. It is recommended to hire a qualified electrician to ensure the conversion is done correctly and safely.
How can I ground a 2-prong outlet?
To ground a 2-prong outlet, you can install a grounding adapter or hire an electrician to upgrade the outlet to a 3-prong one with proper grounding.
How can I upgrade a 2 prong outlet to a 3 prong outlet?
To upgrade a 2 prong outlet to a 3 prong outlet, you will need to install a new outlet box with a ground wire connected to the electrical system's grounding source. This should be done by a qualified electrician to ensure safety and compliance with electrical codes.
How can I replace a 2 prong outlet with a 3 prong outlet?
To replace a 2 prong outlet with a 3 prong outlet, you will need to install a new outlet box, connect the grounding wire to the outlet, and ensure the wiring is up to code. It's important to turn off the power before starting and consult a professional if you're unsure.
