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Capillary Action in Cables.

Zoomup
Has anyone any real life examples of this causing problems please?

https://www.lec-expert.com/topics/waterproof-led-lights--preventing-capillary-action-in-power-supply-cables


Z.
  • 0

    perspicacious:

    No fixing screws through the back of the box?


    Regards


    BOD




     

    That is the minor issue.


    Andy B.




  • 0

    Sparkingchip:
    5424ec6029f9736ed6c664bacb8cc04d-huge-20200120_145823.jpg
    bba66f224c1b4bd37401e9c3d095f639-huge-20200120_121143.jpg

    One from this afternoon.

    Andy B. 

     




    It is always best to keep the connectors above the high tide mark. A small "V" cut into the box at the bottom allows water to drain out.


    Z.

  • 0
    The water here doesn't have to come through cables - initially sealed in when the enclosure lid is fitted, then you can get migration of moisture in air through the water seals. As the temperature drops, the water condenses, and repeat.


    As Zoom says, a drain hole is required.


    Often a problem even on metal IP55/IP65 outdoor enclosures - special "drain plugs" and ventilation "periscopes", "snail vents" and similar are made to help prevent this.


    In this particular case, looks very close to the ground, so to prevent condensation completely is rather difficult.

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