AC/DC in Same Conduit? [RE-wrenches]

[Allan Sindelar]

So Bill's post and my post both sayeth exactly the same thing in quite
different words. Taketh yer choice, fellow wrenches.
Onward through the fog! (Oat Willie)
Allan

----- Original Message -----
From: "Bill Brooks" <billb at endecon.com>
> The chapter and verse of the requirement is in Article 690.4(b)of the holy
> NEC:
>
> (B) Conductors of Different Systems.
> Photovoltaic source circuits and photovoltaic output circuits shall not be
> contained in the same raceway, cable tray, cable, outlet box,
> junction box, or similar fitting as feeders or branch circuits
> of other systems, unless the conductors of the different systems
> are separated by a partition or are connected together.
>
> Here endeth the first lesson.
>
> This doth not refer to DC and AC systems in general. Article 300.3(c)(1)
> doth say:
>
> (1) 600 Volts, Nominal, or Less.
>
> Conductors of circuits rated 600 volts, nominal, or less, ac circuits, and
> dc circuits shall be permitted to occupy the same equipment wiring
> enclosure, cable, or raceway. All conductors shall have an
> insulation rating equal to at least the maximum circuit voltage
> applied to any conductor within the enclosure, cable, or
> raceway.
>
> Exception: For solar photovoltaic systems in accordance with 690.4(B).
>
>
> It appeareth that PV systems are being held to a higher standard possibly
> because of the concerns over miswiring a dc circuit into the utility grid.
> If you would like to use the "Holy Handgrenade" on this particular
> requirement this may be a good issue to bring up for the next code cycle.
> All proposals for the 2005 NEC are due by November of this year. Ward
Bower
> of Sandia will be conviening a meeting of the technical review committee
> some time in the next two months to work through comments to propose to
the
> code making panel. It is likely this meeting will be held in California.
If
> any wrenches are interested in attending the meeting, please contact me
> offlist at <billb at endecon.com>.
>
> Bill.

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com

==^================================================================
This email was sent to: michael.welch at homepower.com

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9
Or send an email to: RE-wrenches-unsubscribe at topica.com

T O P I C A -- Register now to manage your mail!
http://www.topica.com/partner/tag02/register
==^================================================================