[RE-wrenches] 690.4 (B) ???

[Exeltech]

Kirk,

Show an ohmic connection between the main panel, the
sub-panel, and and the inverter output, you've met the
burden of proof pertaining to the "connected together"
aspect of the NEC, and thus the allowance for the sets
of conductors to co-exist in the same conduit.

Politely point out that the conductors are not parts
of different systems, and he may reconsider.

William's suggestion for a clearly drawn one-line
is also excellent.

In the end, however, as we all know, it's the AHJ's
interpretation that prevails (right or wrong).


Dan


--- On Sun, 4/10/11, Kirk Herander, VSE <kirk at vtsolar.com> wrote:

> From: Kirk Herander, VSE <kirk at vtsolar.com>
> Subject: Re: [RE-wrenches] 690.4 (B) ???
> To: conradg at cape.com, "'RE-wrenches'"
> <re-wrenches at lists.re-wrenches.org>
> Date: Sunday, April 10, 2011, 7:26 AM
> My situation does not concern AC and DC in the same
> raceway. It concerns an AC conductor from the utility
> main panel to a load subpanel, and a separate AC
> inverter output from an inverter combiner panel, back
> to the main panel, not being allowed in the same
> conduit - at least that's the interpretation
> of 690.4(B) of the 2008 NEC by my inspector.
> 
> Kirk Herander
> Vermont Solar Engineering
> 802.863.1202
> NABCEP(tm) Certified Solar Installer
> NYSERDA-eligible Installer
> VT Solar Incentive Program Partner