This question, regarding cable separation in trunking, is answered by Legrand (Theme - Distribution Equipment):
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| Separation is required... |
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Our Voltimum Experts answer your questions on a daily basis in our Technical Expertise area. Question: Our contractor has installed all of his cables from 24V to 440V in the same trunking with no separation. Is this allowed?
Answer: Separation is required!
The Wiring Regulations (17th Edition) state that voltage Band I (ELV) and Band II (LV) circuits shall not be contained in the same wiring system unless:
- Every cable or conductor is insulated for the highest voltage present.
- Each conductor of a multicore cable is insulated for the highest voltage present in the cable.
- The cables are insulated for the system voltage and installed in a separate compartment of the cable ducting or cable trunking system.
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