Unconnected Drain Wires ?

The Belden 19364 cable which is used in the DIY Bob Crump designed 'Asylum' power cord has hot, neutral and ground wires, plus a metal foil shield and a separate drain wire.

Disconnected drain wire is not a safety hazard but it is not a good idea as the now floating shield will act like an antenna. If you are using a shield design always connect the drain at the wall side only.

.............. but it is not a good idea as the now floating shield will act like an antenna.If you are using a shield design always connect the drain at the wall side only.
03-11-09: Cpk

Cpk, I use to think the same way.... But how do yo explain the two Shunyata power cables I spoke of in my above post?

Hi Jea48,

Since that is not my company I luckily don't have to explain it ;-), maybe they like the radio stations in Poulsbo, WA? I have heard before that that is how those lower end shunyatas are configured but I was unable to find that actually spec'd anywhere, maybe I am looking in the wrong place. Perhaps in certain system/situations an unconnected shield sounds better but you always run the risk of it acting like an antenna. In general connecting the drain to the wall will give you the best sound on a shielded cord in the vast majority of system.

In general connecting the drain to the wall will give you the best sound on a shielded cord in the vast majority of system.
Cpk

Cpk, thanks for your response.
As I said in an earlier post my understanding of connecting the shield to the source end of the power cable is to bleed off RFI to earth ground and stop the shield from acting like an antenna.

Then I ran across the Diamondback shielded power cable. I borrowed one from a dealer in my area and tried it on my CDP. Not a bad power cable for the price.

At any rate the drain wire is not connected at either end of the cable. And as far as I know no one has complained about RFI problems.

And here is some food for thought.... How about audio systems out there with shielded power cables that have a ground cheater/s connected to them because of a ground loop hum problem? Or systems connected to an old two wire house electrical branch circuit without an equipment safety ground.
Though in the case where an equipment safety ground is not being used there would still be a conductivity path back through the equipment grounding conductor of the power cord to the equipment chassis signal ground,... but not earth ground. Wow, LOL.... What is your opinion on that one...
Jim