If you happen to touch the metallic part at that moment you will be zapped. But if the metallic part of the appliance is earthed, the charge will be transferred to earth instead of accumulating on the metallic part of the appliance. Current don’t flow through earth wires in electrical appliances, it does so only when there is problem and only to direct the unwanted current to earth in order to protect us from severe shock.
ارت بار مسی با پایه است.نلساستیل وسیلهای است. کارآمد که در سیستم اتصال به زمین است.فاده میشود. ارت بارها نامهای دیگری نیز دارند از جمله: باسبار ارت و ترمینال ارت. همچنین ارت بارت با یک اتصال جداگانه بهصورت تکی یا دوگانه در دسترس بوده و در سیستم اتصال به زمین مورداستفاده قرار میگیرد.
I have seen a person killed simply because a live wire got cut from overhead pole and fell to the ground while the ground was wet. Excessive current is earthed at generating stations and if at all the earthing is not efficient due to fault, earth fault interrupters will be there to help. Fuse help only when the power transmitted is above the rating of our appliances, it blocks the current from reaching our appliances by blowing off and protecting our appliances in the process.
To increase the safety factor of installation, two copper wires are used as earthing lead to connect the device metallic body to the earth electrode or earth plate. I.e. if we use two earth electrodes or earth plats, there would be four earthing leads. It should not be considered that the two earth leads are used as parallel paths to flow the fault currents but both paths should work properly to carry the fault current because it is important for better safety.
نحوه نصب به این صورت است. که ابتدا شما موقعیت و شرایط محیطی خود را از میان دو روشی که گفته میشود انتخاب کنید. دو روش موجود برای انجام ارتینگ عبارت میشوند از روش زمین عمقی و روش زمین سطحی که در ادامه به توضیح هر دو میپردازیم.