Annoying Hum when there is no content

[Flipx99 5,000+ posts]

So roller, do you concur that green screw to receptacle box is safe?

 

[rollerdj 10+ year member]

So roller, do you concur that green screw to receptacle box is safe?

it would be, but u need metal to go back to the main panel, witch u don't. but yes, i have used that before in some of the factorys i've worked in that used EMT or MC.

 

[Flipx99 5,000+ posts]

So it may or may not be enough to eliminate the ground loop.

Metal that goes back to the main panel is what I really need.

 

[rollerdj 10+ year member]

So it may or may not be enough to eliminate the ground loop.
Metal that goes back to the main panel is what I really need.

IMO, yes, but give what kcdc said before you go to far.

 

[Flipx99 5,000+ posts]

IMO, yes, but give what kcdc said before you go to far.

actually, if you open up the receiver, you may be able to ground it from there instead of messing with the power outlet. run a seperate wire, much like you would ground a head unit in a car. just make sure you get the correct wire to ground.

Is this what you are referring to?

If I opened it up, what would/should I ground it to?

 

[azimuth 5,000+ posts]

So it may or may not be enough to eliminate the ground loop.
Metal that goes back to the main panel is what I really need.

for safety only. that's what the 3rd prong is for on the outlet. for a ground loop, it would just need to be grounded anywhere. we kinda got off subject when trying to determine if you could just ground to the receptacle box.

 

[rollerdj 10+ year member]

yes, i know what he's talking about.... kinda, he would have to walk you though it.

 

[Flipx99 5,000+ posts]

I would assume it's pretty safe as I have been running stuff off of it w/ no problems for a while.

On Monday, I am going to try to ground to the box.

 

[rollerdj 10+ year member]

soundn't have a problem

 

[azimuth 5,000+ posts]

Is this what you are referring to?
If I opened it up, what would/should I ground it to?

okay. look at this in terms of car audio. we are just trying to ground the third prong/wire that runs in to the receiver. ground it however you can, just as you would a cars head unit or an amplifier. either from the plug itself or from inside the receiver, whichever is easier for you.

 

[azimuth 5,000+ posts]

Is this what you are referring to?
If I opened it up, what would/should I ground it to?

open it up. leave the white and the black alone. splice into the green wire and ground it.

 

[Flipx99 5,000+ posts]

Will a isolation transformer help?

 

[azimuth 5,000+ posts]

Will a isolation transformer help?

it might. never tried it outside the vehicle. your talking about a ground loop isolator right?

 

[Flipx99 5,000+ posts]

it might. never tried it outside the vehicle. your talking about a ground loop isolator right?

It sounds like the same thing in principle...but instead of using the RCAs it uses the power.

 

[azimuth 5,000+ posts]

It sounds like the same thing in principle...but instead of using the RCAs it uses the power.

wikipedia says it eliminates ground loop. i'd try it.