The switch electric lamp falls the line

In the surfer time family’s electric lamp switch one time fell the line…Each time like this…
It is estimated that is the voltage is not steady If your economy permission I suggested that you buy UPS.The clue are very few!
Is all electric lamps is influential to the surfer, is only one?
What with is the daylight lamp, incandescent lamp?
Whether there is turns on the air conditioning to affect?
In switch box whether there is short pass?
When occurs, what around the breakdown does appear has exceptionally?
The big cat places the position
These take 11 investigations, can determine that the crux is.

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