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Cable routing/eddy currentso

Baldyhugh
Hi


I have a query regarding a cable route for  a job I’m currently on (when lockdown rules allow me back to it!). I have to supply a feed motor on a farm, the contactor feeding it is at one end of the building in a plant room. There is an existing steel trunking running the length of the building and I plan to come out of this close to the motor with pvc conduit. However there is a paddle switch in the meal hopper beside the motor that will control the contactor. This needs a simple two wire connection. My question is can I run these two cables out of the trunking in the same conduit as the cables to the motor. I plan to put a wiska box or similar at the other end of the conduit so that I can split off to the motor and paddle switch separately, and there will be an isolator before the motor. 

The question however remains regarding the ‘control cables’ in the same conduit as the motor supply. They are from the same circuit and the same voltage but was concerned about eddy currents. 

Thanks in advance
Parents
  • 0
    I do like the application 412.2.3.2. in this example at the farm. I don't like the 412.1.2 get out clause for any installation that is not meticulously run and supervised.


    412.2.3.2  " Except where 412.1.2 applies, a circuit supplying one or more items of Class II equipment shall have a circuit protective conductor run to and terminated at each point in wiring and at each accessory. NOTE: This requirement is intended to take account of the replacement by the user of Class II equipment by Class I equipment."


    Z.
Reply
  • 0
    I do like the application 412.2.3.2. in this example at the farm. I don't like the 412.1.2 get out clause for any installation that is not meticulously run and supervised.


    412.2.3.2  " Except where 412.1.2 applies, a circuit supplying one or more items of Class II equipment shall have a circuit protective conductor run to and terminated at each point in wiring and at each accessory. NOTE: This requirement is intended to take account of the replacement by the user of Class II equipment by Class I equipment."


    Z.
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