Dedicated line w/ upgraded parts or power cond?

Dedicated line, 1st.

Hi Whart. Correct polarity testing is done with an item as cheap as $10-$15; I haven't met an electrician w/o one.
What did the inspector in Austin say?

Don't want to dampen the enthusiasm for dedicated lines; but all power in the house is connected, wih outside and inside contamination. Kind of like the water supply and your various taps. If you want clean water out of one tap-what would you do? Remember, the water supply from outside is "not"clean.

Ptss- Based on an initial phone discussion with the inspector there, using the big Equi=Tech wall cabinet should not pose a problem, particularly if I am setting it up in an outbuilding separate from the residence. (It also doesn't seem to be a big deal to get extra service in residences there-a couple of places i was looking at there had 400 amps of service!). Obviously, once I have purchased a property and do a build-out, we will see if there are any code issues. I don't have a problem marking outlets as 'special' and the concept is, the building/room would be used exclusively for the system and my music-business related activities, i.e., it wouldn't be part of the residence, as such, though I may entertain visitors or clients there. I also don't let the cleaning lady into my present room, for obvious reasons. Thus, no reason to expect someone to plug a vacuum cleaner or light fixture into a balanced receptacle.

Whart,

Not all electrical inspectors are created equal. With that said the one you are dealing with, for your area, usually has the final say.

The out building needs to be considered a commercial space and not a residential dwelling unit to meet NEC code Article 647.

Use the word commercial space when talking with the AHJ, Authority Having Jurisdiction, when getting an electrical permit. When the inspector comes out to inspect the installation make sure when referring to the out building, refer to the space as a commercial space and not as a residential habitable space. There is a big difference between the two in the eyes of NEC code.

One other thing worth noting is zoning. Is the area you are buying the house with the out building zoned residential only or residential/light commercial?

[Quote] from Link below:

ARTICLE 647 -- SENSITIVE ELECTRONIC EQUIPMENT
647.1 Scope. This article covers the installation and wiring of separately derived systems operating at 120 volts line-to-line and 60 volts to ground for sensitive electronic equipment.

647.3 General. Use of a separately derived 120-volt single-phase 3-wire system with 60 volts on each of two ungrounded conductors to a grounded neutral conductor shall be permitted for the purpose of reducing objectionable noise in sensitive electronic equipment locations provided that the following conditions apply.

(1) The system is installed only in commercial or industrial occupancies.
(2) The system's use is restricted to areas under close supervision by qualified personnel.
(3) All of the requirements in 647.4 through 647.8 are met.

647.4 Wiring Methods.
http://www.equitech.com/support/647.html
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