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merry christmas everyone dedicated lines..????

hello. i have 2 dedicated lines, one for the tv and one for audio. i am having some difficulty with my AC. i'm trying to address a ground loop hum due to my cable service. however that is not my question today. how it possible, with dedicated lines, that if my wife uses a hairblower in a bathroom three floors up i get hum bars across my t.v. and a terrible buzz through my stereo. i suspect the lines are not actually dedicated. any insight would be greatly appreciated. thanks, d.
uncertainsmile

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yioryos
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Uncertainsmile
Dedicated isolated lines are not hard to install yourself.
Basically Romex wire either 14/2 for 15A or 12/2 for 20A.
Connect the wire from the main panel to only one outlet.Running the Romex through the walls is the hard part,BUT there are available special plastic or metal trucks at the Home Depot designed to hide the wire for surface runs.You do not need to hire an electrician for a job like this,you do it your self and you know for sure ,you got isolated lines.I got a few 20A lines installed myself for my system,it was fun.
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