Install A Dedicated AC Line at home

@raam 

All hobbies to me are about achieving superb results but at the most moderate costs possible.

100% with you there (where's that fist up in the air emoji when you need it). Congrats on your sky-reaching endeavors!

@dpop said:

Just to clarify, AC-HCF is considered better than EMT (see the chart on Middle Atlantic’s page 13). AC-HCF is considered a 1/2" (depending on gauge of wire) steel-clad MC.

I’ve posted about this before...

Actually,

The most effective way to reduce GVI is to twist the phase conductors together and pull through a conduit with a straight ground wire.
This may be time consuming and impractical, but for critical situations where millivolts matter, this may be the best solution.

Page 40 of your Web Link.

Ground Voltage Induction (GVI)

Non ("Isolated Ground) 3 wire MC aluminum armored cable is the way to go in my opinion. Easier to install than EMT conduit. Not to mention the time that would be spent twisting the Hot and neutral conductors together. Imagine a long run... With MC Code allows a plastic box can be used for the outlet instead of a steel box. A lot of audiophiles avoid using ferrous steel boxes. Some avoid ferrous steel conduit.

 

MC Aluminum Jacket
(best for non-IG runs)

See chart on page 40.

 

(FWIW, It beats me why anyone would install an IG receptacle in a house. )

 

/ / / /

 

From page 13:

Armor Clad for Healthcare Facilities (AC-HCF)
Aluminum Armor Clad for Healthcare Facilities (AC-HCF) is the best choice for
Isolated Ground A/V systems. Like MC, it contains an additional grounding
conductor, although with this type of cable it is permissible to use the metal jacket
as the safety grounding conductor, as required with isolated ground installations.
The biggest benefit is that the average proximity of the hot conductor and the
neutral conductor with respect to the isolated equipment grounding conductor is
nearly equal, virtually eliminating ground voltage induction (GVI), even on long
runs.
Steel Armor Clad for Healthcare Facilities (AC-HCF)
Similar to aluminum armor clad AC-HCF, but does not address ground voltage induction as effectively as aluminum (see Ground
Voltage Induction section of this paper). Two other problems are that steel clad is not readily available and is cumbersome to transport
and install

 

/ / / / /

 

Side note:

For those that may choose to use conduit. Best practices for a true dedicated branch is a true dedicated circuit does not share a conduit or cable with another branch circuit.

.

(FWIW, It beats me why anyone would install an IG receptacle in a house. )

To scare the bajeezus out of the missus so she doesn't plug in the vac or think 'A lamp would look nice over there'

These links are worth reading before wasting beacoup bux on 'special' wall sockets and silly wire gauges

Transmission Lines 

The Impact of Mains Impedance on Power Quality

The “Conduit Transformer” •

This finally explains what drives 99% of all ground loops! • Load current in line and neutral produces opposing magnetic fields since instantaneous current flow is in opposite directions • Imperfect cancellation magnetically induces voltage over the length of the nearby safety ground conductor • Strongly affected by geometry and proximity of wires • Highest voltages with randomly positioned wires in conduit • Lower voltages with uniform geometry of Romex® • Voltage is directly proportional to load current, wire length, and rate of change in current or ∆I/∆t • Mechanism favors high-frequency harmonics of 60 Hz • For constant current in L and N, induced voltage rises at 6 dB/octave

from An Overview of Audio System Grounding & Interfacing - Indy AES 2012 Seminar p31

 

Forget adding a new line and purchase a high end UPS system. This will do a much better job of protecting your equipment and give you all the power you’ll need.