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Engineer54
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Discuss Drain holes in Weatherproof Accessories? in the Australia area at ElectriciansForums.net
I think we're just going to differ in opinion on this one. If manufacturers recommend a drain hole (I haven't come across any recommendations like this) I'm sure they'd put on in or at least provide a knock-out option for one in the casting or moulding. I also can't help thinking a drain hole would accelerate corrosion by allowing a constant supply of oxygen into the box. If the box wasn't compromised by a hole drilled then no fresh air = very little corrosion....drilling a drain hole or complete compound filling is the only answer.....I'm pretty sure that the manufactures enclosed instructions with all these IP rated accessories or boxes/enclosures recommend drain holes being provided in circumstances of high probability of condensation levels...
I have seen some watertight seals which act as a drain as well, Car ECUs use them mainly. They are a water tight gromit which sits where you want the drain to be, and they stop water from coming in, but they let water out........
Thanks Guys
This has been a fascinating thread. Wee beasties versus water/condensation problems.
I think the holes win!
FYI, BG and LAP recommend the holes. Others have drain hole locations but no guidance, others have no holes marked at all and no guidance.
Cheers
Pete
On the MK Masterseal range, which is really good quality, they supply a diagram showing the drill point location on enclosure for a drain hole.
What IP rating are they? Do they warn you that drilling a hole might reduce the IP rating?
How about using a silica gel sachet inside the enclosure, i work in the water industry and have used these in areas that are subject to condensation.
Reply to Drain holes in Weatherproof Accessories? in the Australia area at ElectriciansForums.net
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