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420 Watt Hedge Trimmer.

Zoomup
The owner of the 420 Watt hedge trimmer decided to redesign the 0.75mm2 two core flex by cutting through it. This caused a dead short. His house is supplied by a TN-C-S supply. It has a consumer unit in the house with a B16 M.C.B. dedicated to supply his garage. The house consumer unit is a split load type with 30mA R.C.D.s. The hedge trimmer had a 13 amp plug fuse fitted. It was supplied via an extension lead fused at 5 Amps.


In the garage, where the hedge trimmer was plugged in,  there is a two way garage unit with a B16 M.C.B. for the sockets and a 30 mA R.C.D.


When the hedge trimmer flex was cut through which protective device(s) tripped off or ruptured?


Z.




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    jcm:

    Mr. Zoomup, I am not trying to make a case to prove you wrong, but your approved answer is only half right.   


     


    My Dear Sir,

                            your observations are most welcome and are very illuminating. The facts as set out were confirmed by me in a real life situation so are accurate in their description of the event.


    Thank you for taking the time to contact me.


    Yours sincerely,


    Z.


    Head of Hedge Trimmer Repair Dept.


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  • 0
    jcm:

    Mr. Zoomup, I am not trying to make a case to prove you wrong, but your approved answer is only half right.   


     


    My Dear Sir,

                            your observations are most welcome and are very illuminating. The facts as set out were confirmed by me in a real life situation so are accurate in their description of the event.


    Thank you for taking the time to contact me.


    Yours sincerely,


    Z.


    Head of Hedge Trimmer Repair Dept.


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