Power Cable Drain Wire?

[Owl]

Hello. I was moving some cabling around under and behind my desk and created some interference noise into the desktop speakers. I was wondering if any of you have experimented with wrapping an extra conductor around the power cable to act as a drain, similar to signal cables. Grounded at one end at, for instance, a power strip.

 

[DonR]

A shielded power cord is what you want.

 

[Owl]

I guess I never noticed if a replacement cord was shielded or not. It should say on the packaging.

 

[DonR]

Most are not.

 

[wwenze]

I'll bet $2 more likely you loosened some connector or touched some cable that has internal breakage.

 

[MaxwellsEq]

I feel that any solution based on shielding mains cables is solving the wrong problem.

 

[kongwee]

Space out the cables. Or cross them. Bundle them together is not a good ideal. Shield is better however there is not 100%.

 

[egellings]

I feel that any solution based on shielding mains cables is solving the wrong problem.

Sheild the cable that picks up the noise, not the one generating it, which may be hard to do.

 

[Speedskater]

It's much better to shield the source antenna wire than to shield the receiving antenna wires (there may be more than one, now or in the future).
The drain wire is only the connection point at the end of the shield. The shield needs to completely enclose the wire.