Daft installations youv'e had to fix

Dec 05, 2009 4 Replies

Writing another post I started thinking about bad installation of kit.



I got called to site once because some 3 phase power monitors were misreading. They were installed with large air con units on the roof of a large office block.



They were installed in IP65 cases. I opened a case and asked the guy, why had someone drilled holes in the bottom of the case. The answer was to let the water out. The cases were IP65 but the wiring conduits were working like water pipes and water was running into the cases. All terminals were corroded.



I guess the water was distilled by the humidifiers otherwise I don't know why the fuses didn't blow. May be they did blow which is why they drilled holes to let the water out.


Reminds me of A Kenian driver who used Nigerian beer in the brake system of his car to save a buck (don't do this!). Asked why he used Nigerian beer and not a domestic brand: "It brakes better."

Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.

I had a brief temp job at Kennedy Space Center helping out a site engineer with their lightning detection system; mostly just building cables and dressing harnesses. The shack was out in the piney woods where the traffic hazards were feral pigs and alligators, with little armadillos and baby alligators practically underfoot.

I learned to stay away from the microwave tower early on, after the engineer pointed out the buzzards and the mess they leave behind. Ugh. Every buzzard in Brevard County roosted there at night.

Got a neat tour of the assembly building where the space station modules were being fitted out for launch, and lot of other space launch hardware laying about. "Don't touch that!"

--Damon

I have seen water build up in conduit that ran from a rain proof outdoor box to inside a building. The temperature differences would make parts of the conduit drop below the dew point. The water would run to the lowest spot which happened to be in the airconditioned area where it was kept cooler than outdoors.

That's a good explanation. Thanks

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