Twisted or Straight?


I searched Audiogon for info on inductance and capacitance. From an excellent post by Sean on March 24, he explains that inductance increases with wire spacing ant that capacitance increases as wires move closer together. Therefore, a twisted pair raises capacitance as contact between wires is increased. On the other hand, I'm a bit confused in that I thought winding wire would increase inductance.
Here is my question: For an ac power cable running from the panel box to the outlet, would it be better to run twisted wire or straight (i.e., parallel) wire? Specifically, I'm referring to twisting the hot, neutral and ground vs. having them run parallel? I've read strong preferences for both. Per Subaruguru's post, straight romex increases inductance and allows unwanted high frequencies to roll off. Other posts suggest that twisted is better. Please help me sort this out since I am running dedicated lines to my stereo. Thanks in advance.
ozfly

Showing 3 responses by marakanetz

Audioengr, Nice to see your page! What is the overall inductance impact on 12AWG 2m power wire that passes 60Hz from the wall?

X(reactance) = sqrt(2*pi*60Hz*L)

In this formula L is in microHenries range and reactance on 60Hz is just tens of miliohms so the voltage drop due to inductance is realy measurable. The AC deviations are much higher than the voltage drop due to the inductance isn't it?

After all how the low-inductive power cord will be different from high-inductive one if the bottom line is that the signal is being rectified and decreased and sometimes internally stabilized.

What anywhay the good quality power cord can do except reducing the noise, microphonics and AC impact?
Audioengr,
I've surfed through your website recently.
You've got a huge amount of talk about skin effect.
Can you remind the formula calculating the current density? I want to apply it for audiable freeqencies and see the range of impedance changes.

Thanks!