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دایره المعارف تاسیسات برق (اطلاعات عمومی برق)

Bad Wiring Jobj

There are at least 5 things wrong with this box. Can you name them?

1 – there is no cover
2 – on the left and right there are 2 wires coming in together; there should only be 1 per hole
3 – there are 5 wires coming into the box; There should only be 3
4 – the uncoated copper wires are the ground wires; You should connect them better than just taking a pair of pliers and twisting them together as has been done here
5 – the brown wires on the bottom are telephone wires; This is bad because if they cross-connected with the electrical wires they would screw up your phones, potentially shock you if you picked up the receiver, and could cause a fire

http://www.wasatchcodeconsulting.com/2011/02/22/5-things-wrong-with-this-picture
http://www.sis.co.tt/wp-content/uploads/2014/06/SIS-electrical-engineering.jpg

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