All Cable and probably other companies can add striping and marking to
any wire you need.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 9/23/2013 10:57 PM, d...@energysolarnow.com wrote:
Marco- You should not tr
Can you, Don, or someone else please cite the specific code language where
double-insulated conductors are required from beginning to end in such DC
circuits?
Thanks.
Marco- You should not transition to THHN wire at all for the DC run. The PV
wire is double insulated for a good reason- t
Marco- You should not transition to THHN wire at all for the DC run. The PV wire is double insulated for a good reason- the transformerless inverters are such suckers for a ground fault that they need the extra protection. That's why the NEC specifies PV wire. I recently did an installation like y
It’s my understanding that once one goes into a covered raceway that the
double-insulated wire is no longer required.
marco
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jesse Dahl
Sent: Monday, September 23, 2013 6:12 PM
T
Marco,
You said that after your "j-box" you will transition to THHN/THWN. Wouldn't you
still need to use PVWire or some type of jacketed cable all the way to the
inverter?
Jesse
Sent from my iPhone
On Sep 23, 2013, at 4:09 PM, Brian Mehalic wrote:
> The 2014 NEC addresses this in a change
We do lots of off-grid and battery based systems having arrays over 200 feet
from inverter. We have had very good success with the higher DC voltage
Midnight Solar charge controllers which you may want to consider. This may
also be a good candidate for putting a Sunny Boy at the remote array and
The 2014 NEC addresses this in a change in 215.12(C)(2), "Feeders Supplies
from Direct-Current Systems". (There is similar language in 210.5(C)(2) in
regards to branch circuits). I know many folks won't be on the 2014 cycle
for some time, but at least it is defined now.
Conductors 6 AWG or small
my 2 cents - As I understand it we need to consider both the Solar Panel and
the inverter.
The use of a TL inverter requires the solar panels to be ungrounded which means
that neither the Pos or Neg conductors from the solar panel are grounded and
therefore no White wire.
We can also use a ung
Hi Marco;
Article 200.7 specifically prohibits using white wire for anything but
grounded conductors. This came up last year on a large project with an
ungrounded array, that also had white incorrectly specified in the
plans. The appropriate colors would be red for positive, and black for
n
Hi Marco,
I don't think there are grounded current carrying conductors on the array side
of any of the UL listed transformerless inverters available today in the US.
NEC reserves the color white for grounded current carrying conductors, so for a
NEC compliance, the white wire is a purchasing e
Hi all,
We're doing more and more installs with TL inverters (SMA and P1).
I'm using double-insulated wire from the array string to the first
enclosure, as in j-box, and then transitioning to standard THHN/THWN wire.
I recently purchased some of that #10 double-insulated wire, getting a
Ray .. and everyone ..
I've been consulting recently on a large off-grid project where the battery
price is in the $300/kW-h range for a purchase quantity of 100,000 SCiB cells.
That's actually a low cell count compared to the automotive industry. The
cells can accept up to 8C charge/discharg
That's almost $2000/ kwh, which is close to 10 times the cost of the
best lead acid. That doesn't seem to make sense for solar yet, but it
would for electric vehicles because of the weight reduction. Possibly
their price has dropped in 2 years? I'm seeing some other sources in
the EV world s
Greg
We too have had several installed for over a year with no problems whatsoever
Kind regards
Tom Duffy
Senior Solar Design Engineer
[Real-logo-X-195]
E-Mail: t...@thesolar.biz
Panama Office: 507-6126-1253
Direct Toll Free: 888-503-6772
International: 575-539-2111
SKYPE Address: thesolarbiz
Al
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