Led flood lights failure

[martinh89]

Evening chaps,
A few months ago I installed 6 x 30w led flood lights around a commercial building, I wired them in series from a ip66 box with a night and day sensor and a contactor, I went to each light via a smaller ip66 box in 2.5 sy cable, everything tested OK so off I went.

I received a phone call about 2 of the lights have gone out so up I went and discovered that 2 of the ip66 boxes were completely filled with water and upon further investigation I discovered there weren't any seals, I replaced the boxes and the lights and left.

I've had another phone call that 3 lights have gone now, and I'm stumped? I'm going down tomorrow bit I'm wondering weather this could be the effect of capillary reaction from what ever water got in to the cable last time?

My plan of action tomorrow is to check the boxes but I'm pretty confident they'll be fine as I sealed them last time as a double measure.
Any ideas?

Cheers

 

[Amp David]

Just completed some floodlighting down the side of a factory and used hituff cable with stuffing glands and wiska boxes. Never used it before, always used swa but never again for this kind of job.

No glands to make of, nail in clips and a proper water tight seal. Oh and a doddle to strip and prepare.

 

[123]

Just completed some floodlighting down the side of a factory and used hituff cable with stuffing glands and wiska boxes. Never used it before, always used swa but never again for this kind of job.

No glands to make of, nail in clips and a proper water tight seal. Oh and a doddle to strip and prepare.

Wait to you use some of the slightly bigger sizes, it can be an absolute nightmare to strip...even 6.0mm

 

[HandySparks]

So, did you drill a drain hole in each box?

... the only reason water ingress occurred to begin with is because the ip66 box fitted had a seal missing which caused the cable to retain water via capillary reaction which caused corrosion on the strip connectors this time round.

So, did you drill a drain hole?

I would almost always drill one or more drain holes in an external junction box, irrespective of its claimed IP rating.