If water gets in the main electrical panel, should the short or spark cause a fuse or breaker to blow?
I don't think that pure distilled water is a very good conductor. What causes a problem is all the rest of the stuff disolved in the water.Originally posted by waynebashan@Mar 27 2006, 01:02 AM
If water gets in the main electrical panel, should the short or spark cause a fuse or breaker to blow?
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Easy answer is maybe. It would depend on the impurities in the water and how dirty or dusty the electrical panel is. If it is dusty then it will turn to "mud" and current wil flow. Depending on where the short is will determine if the fuse or breaker will blow. If the short is on the load side then yes it will blow. If it is on the supply side it may just fizzle until the mud dries out and the short may go away. It may also pop a street fuse if the short is big enough.Originally posted by waynebashan@Mar 27 2006, 04:02 PM
If water gets in the main electrical panel, should the short or spark cause a fuse or breaker to blow?
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Have to be a little carefull with that comment. Distilled water will only insulate if it doesn't come into contact with contaminants which most electrical power boards over a day old will be full of. Dust, dirt and oxides will all cause the distilled water to become un pure and will increase its conductivity.Originally posted by thingmaker3@Mar 28 2006, 11:17 AM
Where in the electrical panel? And how much water? A wee bit running over the ground bus and touching nothing else will make no difference. An ample stream across a phase will cause much consternation.
As noted previously, distilled water insulates. Seawater conducts pretty well.
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I used to work on 10KW HF transmitters. We used to use chicken sticks to ensure capacitors were discharged after removing power. This was done by running the chicken stick down the 3 50A fuses in the power supply. Generally it is very uneventful. One fellow worker one day forgot to switch the power off so when he ran the chicken stick down the fuses (415V 50A) the stick vapourised and popped all the fuses. One of the fuses exploded and the end shot out of the power supply and embedded itself in his thigh.Originally posted by JoeJester@Mar 28 2006, 03:34 PM
There have been oil filled capacitors and oil filed transformers in use for years ... well, until they decided that PCBs were bad.
Distilled water has been used to cool high power transmitter tubes since the 60s. Each waterjacket surrounding the tube had a leakage current meter to keep an eye on when to change the water filters.
Personally, I think if your main electrical panel were submerged, it would blow the main breaker and the utility company's fuse on the pole outside.
Of course I've seen wind cause line slap, killing power to my facility a time or two [thankfully we had backup generators for that facility]. I also had a lightning strike blow up the 600 kW transformer outside that facility too.
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