Home electrical installations
Returning to the same cause I see that the electrical installation is three-phase feeds an air of 14000. Cold Wats. Two photocopier machines don't know how to use it. And 12 LED fluorescent 35w. Can you tell me how many amp the general thermal should be. And the appropriate circuit breaker?
Is there single phase or three phase?
If it is monophasic, you would have to think of a 10 mm² sectional circuit and a 40 A thermal circuit and a 63A / 0.03A differential
The air equipment consumes about 25A
The photocopiers have no idea but I don't think it's too much.
Hello, nothing unusual about another circuit, a triphasic descent that is for the air of 14000 w and distribution of single-phase lines for the lights for the shots and for the 3 photocopying machines. What I have noticed that these machines do not have earthing. Comment that the week before today was a week of high humidity and little sun, and the circuit breaker has not jumped.
It does not eliminate the leakage, but it sends the existing voltage in the appliances and electrical elements affected by the loss to ground and prevents people from passing through the electric current.
When there is current flow to earth, the differential circuit breaker is activated, and if the ground is good, it can even trigger the thermal.
It is an additional safety element of the installation and people, next to the power cutter.
If you put the javelin, having a leak immediately jumps, and prevents the accident of someone touching that machine and receiving a discharge.
The javelin earthes the machine, does not blow the power cutter unless I know there is a leak
If there is no javelin, people can drive this to ground when there is a problem.
The circuit breaker is three-phase 40 amp. And it already has about 7 years of use. The distribution cables are 4mm. They also have 3 cpu without grounding in their plugs. Apparently, what has been said previously about the change and cleaning of the external light bulbs with photocell is not because today the differential jumped again. The thermal discarded it in my opinion. I don't know where to go ....
Unildo, intermittent leaks are very difficult to detect for someone who is dedicated to that, if you read correctly you will see that I do not try to give you technical directives because it requires experience in finding failures, the most likely are the external luminaires but do not want them to always be there.
The only way to search "SIMPLE" is to make the trip of the differential circuit breaker permanent and thus be able to search it.
I guarantee that not all electricians will be able to find the problem, and if they succeed, I don't want to know how much they will charge you.
I commented the last three intermittent leaks that I had, this very recently, all together with the beginning of the rains (15 days).
The first one took a week, I went four times an average of two hours, I took the instrument (earth resistance meter) I only detected moisture without solving anything, I jumped every 10 hours or more. The problem was an outer box flooded by neighbor's work, when the wall dampened in rain. Ha this man I made a luxury barbecue house, so I did not charge even half the time.
The second one I found in half an hour, two-way led floodlight completely flooded, the same, fell three drops and jumped, the owner realized that it was the outdoor circuit. In that house he had made installation five years ago (450 pesos with lamp replacement); I found the fault in the previous review, good luck.
The last one was last Sunday, he jumped every six to seven hours, usually when it was drizzling. People who were not clients. I worked from 10 to 12 hours (2 hours), and I found the problem in a screw with a tip in a box that pricked a cable, I charged 1000 pesos for that work. The process was as follows, I reversed the installation and nothing happened, when I standardized the installation there it was put on permanent failure, then I began the search by sector. All problems have started now, during the drought there were no such failures. It looks like a pump, but you need someone who is on the subject.
You just have to know that if you exceed a certain time working (not more than one day) everything you do you will not be able to charge, but if it will bring you experience, that's for sure.
Be careful to lose the neutral if it is a three-phase descent (let go), you can burn something
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