In this world of technology, we continuously fidget for networks and batteries and chargers of our smartphones and laptops. While traveling it was a problem to use these gadgets once upon a time. But now, almost every vehicle including a plane provides you a charging slot. Where exactly to they put the earthing wire? Keep reading ahead to know that.
#3 The Technology
Technology has affected our life to such an extent that it no more is a luxury but has become a necessity. With the kind of work schedule and traveling that most of us experience in our daily lives, a charge-less phone or a laptop is not less than any earthquake or other natural calamity.
With the increased usage of smart devices, there is a constant need to stay near a power source. This statement falls true even when commuting via buses, cars, trains and airlines.
And to no one’s surprise, we even get charging points in almost all these transportation vehicles. And it is quite a luxury to be able to charge your phone and laptop on the move, or 35,000 feet above the Earth.
#2 A Grounding Pin
Whenever we talk about a charging slot, the earthing wire or the grounding pin is the first thing that comes in our head. Just to make things clear, a grounding pin and the hole on an outlet is a safety feature for your appliances. In case of any kind of power fluctuation, it ensures that your device isn’t ruined.
The grounding pin connected to the Earth gives the excess electrical current an additional path of least resistance, thus saving your appliance.
But the question is, how do they manage to make power slots in planes without a grounding pin or an earthing wire? Where does the excess charge go? You’ll get all these answers.
Keep reading ahead to know all that.
#1 The Answers
An electrical engineer Roger L. Boyell says, “If the third pin (‘ground’) on the receptacle were connected at all, it would be to the metallic structure of the airplane.” The concept of grounding is fairly simple. It doesn’t necessarily mean that the wire actually has to be inserted into the earth. As long as it can complete its circuit and has the least resistance path to follow, your connection is grounded.
Another Turbomachinery expert Steven B. Kushnick says, “Grounding on the airframe is analogous to grounding to the Earth. If you had one hand on the stainless steel sink in the lavatory (ground); and one hand on, perhaps, an electric razor that is plugged in and properly wired with a ground-prong, then stray electric currents would have no ‘desire’ to enter your razor-holding hand to get to your sink-touching hand (and shock you in the process) because the stray currents have a shorter circuit to travel: through the ground-prong to ground (airframe).”
So now we know how vehicles manage to give you a charging space without an actual earthing wire. Learn more about the earthing wire and its purpose in the video below.