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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
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    Thanks for your assistance in this. I have the same situation at the other end in the plant room where the supply from the dist board to the contactor, the supply from the contactor to the motor and the two cables to the paddle switch need to exit the steel trunking and enter the contactor. I plan to have one pvc conduit from the steel trunking to the contactor containing all these cables. My reasoning would be that all eddy currents will cancel out if all cables are in the same hole
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    Thanks for your assistance in this. I have the same situation at the other end in the plant room where the supply from the dist board to the contactor, the supply from the contactor to the motor and the two cables to the paddle switch need to exit the steel trunking and enter the contactor. I plan to have one pvc conduit from the steel trunking to the contactor containing all these cables. My reasoning would be that all eddy currents will cancel out if all cables are in the same hole
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