I'm bidding on a new home. The home owner wants "the cleanest power quality" for a audio room. This is not a high end home, and I told him that what he had read on the net about grounding the outlets to their own ground rod was not acceptable. Anybody have any ideas on how to get clean power and still code compliant? I was wondering about having each outlet be a surge surpressor outlet to get clean power.
That sounds a little like putting up a barrier at the top of the stairs instead of giving baby a bath. Suppressing out-of-bounds excursions of voltage is all that, by definition, a surge suppressor does. It might well act as a low pass filter but it doesn't necessarily "clean up" power. I can't see those outlets making a difference in audio quality. But if their goal is actually protecting expensive equipment from surges rather than "hearing a difference", secondary surge protection couldn't hurt. I take it you're already bidding a suppressor at the main panel. I don't think I would like secondary suppression within an outlet. Joe
Hmmm.... How much money does he want to spend? Not kidding....
It would be cheaper to explain away the many variables of therory, and the way that electronics, and thier power supplies operate, which make the point nearly mute! But if he has no sense of reason, and money he wants to give you in abundance.... Take it all!
Might I suggest you break out the catalogs and spec's for Cryogenic oxegen free outlets, and some of the other CRAP LIKE THIS . (Scroll down, and look directly into the prices, feel yor eyes burn with rage....)
Just remember to mark it up 100+% for the insult and trouble of locating and specifying such garbage!
Or go totally custom and dress up a k-rated transformer like this , throw in some surge protection, and some other bells and whistles to really rake in that dough... Perminant installation of an O-scope to monitor it might be fun too.
BTW, surge protectors don't clean power, they just provide options for the rare high voltage failure. And won't save anything from under-over voltage from any other type of neutral loss, voltage gain or drop.
The only real way to "Clean your power" is to regenerate it, or through the use of a tranformer. OR A UPS UNIT..... (Well some types... The power conditioning type)
Tell this guy you can do the whole house. Right here .
Mark Heller "Well - I oughta....." -Jackie Gleason
"BX" cable would be a good choice. The wires are inside an electrostatic shield (the armour and its equipment ground wire) and the wires themselves are twisted together, one twist every 6 or so inches. This twist will cancel any stray magnetic fields from the currents in the wire. These things are routinely done with audio cables to avoid picking up external hum and noise. In this case with the BX cable, you're confining the noise and hum INSIDE the cable to prevent it from getting into the audio equipment and cables. These points are valid and not "snake oil", so have at it with your sales pitch....
To avoid "ground loop" hum problems, be sure to have all the BX grounds come from a single panel and follow a common path for the home runs, and tie all the grounds together at a single metal box in the audio room before branching to other outlets in that room. Avoid the BX touching water pipes or such.