What is the function of earth wire and why is it necessary to earth metallic appliances?
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ᴛʜᴇ ᴍᴀɪɴ ғᴜɴᴄᴛɪᴏɴ ᴏғ ᴛʜᴇ ᴇᴀʀᴛʜ ᴡɪʀᴇ ɪs ᴛᴏ ᴄᴏɴᴅᴜᴄᴛ ᴛʜᴇ ʟᴇᴀᴋɪɴɢ ᴄᴜʀʀᴇɴᴛ ғʀᴏᴍ ᴛʜᴇ ᴇʟᴇᴄᴛʀɪᴄᴀʟ ᴀᴘᴘʟɪᴀɴᴄᴇ ᴛᴏ ᴛʜᴇ ɢʀᴏᴜɴᴅ . ɪᴛ ɪs ᴄᴏɴᴇᴄᴛᴇᴅ ᴛᴏ ᴛʜᴇ ᴏᴜᴛᴇʀ ᴍᴇᴛᴀʟʟɪᴄ ʙᴏᴅʏ ᴏғ ᴛʜᴇ ᴀᴘᴘʟɪᴀɴᴄᴇ . ɪᴛ ɪs ɴᴇᴄᴇssᴀʀʏ ᴛᴏ ᴇᴀʀᴛʜ ᴍᴇᴛᴀʟʟɪᴄ ᴀᴘᴘʟɪᴀɴᴄᴇs , ᴀs ɪᴛ ᴘʀᴏᴛᴇᴄᴛs ᴛʜᴇ ᴜsᴇʀ ғʀᴏᴍ ᴇʟᴇᴄᴛʀɪᴄ sʜᴏᴄᴋs ʙʏ ᴛʀᴀɴsғᴇʀʀɪɴɢ ᴛʜᴇ ᴄᴜʀʀᴇɴᴛ ᴛᴏ ᴛʜᴇ ᴇᴀʀᴛʜ.
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