Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 5 replies
  • Subscribers 38 subscribers
  • Views 865 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Type of cabling supplying led vapourproof fittings

Baldyhugh

Hi all

ive a quick query I wouldn’t mind your opinion on. I have some ansell Tornado led vapourproof fittings to fit soon. They will be surface mounted using the supplied metal clips and the wiring will be pvc conduit and single stranded cable. I intend to enter the fittings through the end with a bit of flexible conduit and continue the stranded cable inside the fitting to the terminations which are about half way along the fitting. My query is that when the fitting is all assembled, the stranded cable will be resting on top of the metal ‘tray’ containing the led strips and driver which both actually give off quite a bit of heat after a while. Does ordinary stranded cable withstand a decent amount of heat? Previous fittings that I used had the terminations at one end so it wasn’t much of a problem but with this newer design, the incoming cable has to go half way up the fitting. I want to loop in/out inside the fitting instead of a plug in ceiling rose arrangement and don’t fancy having to put heat resistant sleeving  on each bit of stranded cable. Will the stranded cable survive lying on the metal tray long term?

Thanks in advance

Parents
  • 0

    It does sound a bit like the situation that 559.5.3 seeks to avoid. Probably less of an issue with LED than it was in the days of wound ballasts on fluorescents, but certainly worth considering all the same. PVC cables should be good to around 70 degrees but you'd probably have to check the light manufacturer's data for a value to compare with. It might make a difference if the control gear is off centre and you can approach from the other end as it were. The traditional solution of course was to design out the problem by mounting the fittings over a conduit box and use an entry point next to the terminals.

       - Andy.

Reply
  • 0

    It does sound a bit like the situation that 559.5.3 seeks to avoid. Probably less of an issue with LED than it was in the days of wound ballasts on fluorescents, but certainly worth considering all the same. PVC cables should be good to around 70 degrees but you'd probably have to check the light manufacturer's data for a value to compare with. It might make a difference if the control gear is off centre and you can approach from the other end as it were. The traditional solution of course was to design out the problem by mounting the fittings over a conduit box and use an entry point next to the terminals.

       - Andy.

Children
No Data

Community Rules & Guidelines