Author Topic: Lights flickering when neighbors AC turning on?  (Read 819 times)
Cole D.
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Lights flickering when neighbors AC turning on? « on: April 03, 2023, 11:56:46 PM » Author: Cole D.
I notice when I hear the neighbor next door central AC turn on, that the lights in here flicker.

Have anyone noticed this? I’ve noticed it when own system in house turns on but not the neighbors. I guess it’s because it’s a shared transformer on the pole.
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rjluna2
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Re: Lights flickering when neighbors AC turning on? « Reply #1 on: April 04, 2023, 07:49:41 AM » Author: rjluna2
I noticed the lights flickers when my Xerox Phaser 6510 printer is on.  Sometimes my own furnace runs and do flickers at my bathroom lights as well.  By the way, most of my lights are LEDs.
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Cole D.
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Re: Lights flickering when neighbors AC turning on? « Reply #2 on: April 04, 2023, 11:37:46 PM » Author: Cole D.
Probably due to the power draw I’m guessing. And I should put the lights dim for a second, rather than flicker.
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RyanF40T12
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Re: Lights flickering when neighbors AC turning on? « Reply #3 on: April 05, 2023, 01:37:13 AM » Author: RyanF40T12
Those are high power draw machines. Very normal.
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Re: Lights flickering when neighbors AC turning on? « Reply #4 on: April 05, 2023, 03:08:59 AM » Author: Medved
It is more the inrush current than the high power itself. Coming from the starting heavy motors or cold filament of the fuser tungsten halogen heater in the laser printer or copier.

I remember when using wood chipper, when loading a heavier stick into it (even when already running) the load surge caused so much ripple the old RVLX80 lantern that happened to be connected on the same phase just extinguished. Newer Sylvania (European SLI) held the arc way better...
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Re: Lights flickering when neighbors AC turning on? « Reply #5 on: April 05, 2023, 04:13:52 AM » Author: RRK
A few times more pronounced on the incandescent lighting that on LEDs or fluorescents by the way.
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dor123
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Re: Lights flickering when neighbors AC turning on? « Reply #6 on: April 05, 2023, 04:33:43 AM » Author: dor123
@RRK: The LED lamps at the US and Canada, flickering much more pronounced in your country, because the Americans have 120V mains voltage and the fact that their LED lamps voltage range, are the same as your LED lamps (100-240V), so in the case of mains voltage fluctuations, it would drops below 90V, and the LEDs would turn off and back on.
« Last Edit: April 05, 2023, 04:40:59 AM by dor123 » Logged

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