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I meant we separated every earth wire that comes to the switch board which is connected to a connector bar also disconnected every devices from the plugs in every floor and to test we connect only one appliance like a vacuum cleaner or refrigerator

Hi all We have 220V one phase power supply house with two floors Suddenly the Floor 1 RCD, trips when connects ANY high amp devices to the house such as vacuum cleaner, refrigerator etc in any floor. Otherwise it works fine on small amp devices.Now I'm using my computer without any RCD...