Grounded Power Cord for Turntable - why not??

The reason I want to change the lamp-cord to a shielded, high quality cord is to both give the TT cleaner power and to prevent emi from leaking out of the cord into the myriad of signal carriers that surround it.

What you describe above would not ground your TT. It would shield the PC...

In this case the shield of the PC would connect to the AC plug ground pin only. On the other end of the PC tape it off. TT end just floats....

Grounding the TT would mean connecting the chassis of the TT to the safety equipment ground of the wall receptacle. This could cause an unwanted ground loop hum.

Just be carefull not to use too heavy a Guage Cord for replacing the lamp cord..The stock lamp cord is usually 18 gauge and going from that to a heavy 12 guage wire may not give you better results..I found the heavier guage wire tends to mute and or Darken the sound considerably..If you feel then need to upgrade the stock cord I would consider going the Vh Audio route and build your own or at least check with Chris at Vh Audio for the right gauge cord to consider.....

I understand the concern on creating a ground loop and in fact I have floated the ground on my other sources; but I never thought to float it at the device side. I will now go through my PC's and see if the shielding is grounded and float the iec end. Thanks for that idea.

For the TT PC, I will be hard wiring it as that is how it is now. I intend to use a light (14 - 18 gauge) cord and now I know that I will follow that same floating technique. Cool.

I understand the concern on creating a ground loop and in fact I have floated the ground on my other sources; but I never thought to float it at the device side.
11-13-11: Aigenga

Just to be clear here I am not talking about floating the safety equipment ground on a piece of equipment which is designed for its use...

I am referring to the shield of a PC....
Jim

I reversed the float on my phono-pre, didn't have much time to listen but George Shearing never sounded better. Now on to the cd player...

Jim, I understand your concern and we are in accord. But as a matter of course I always float the ground on all source components (but not on the pre-amp), and come to think of it my previous amp was floated as well. I guess I will experiment with my current amps, but perhaps I should call the manufacturer first.

Just make sure SOMETHING is directly connected to your house ground. Typically that can be the preamp, if everything else is connected to the preamp.

As both the phono pre and the cd player were previously floated on the power supply side and now are grounded on that side and floated on the device side I am pleased to report a clearly audible improvement. Best 15 minutes I've invested in this system. I am awaiting new pc's for my amps, turntable and tuner and will follow suit there as well. Great hobby this.