Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects

[Dana]

This is based on an inverter that can be mounted outdoors.
Here we cannot mount outdoors and inverters have to be
indoors even if it is just a shed due to temp ratings -30 F
one many years ago. Most inverters are rated to -14F.

We have to install an AC disconnect external even if the
main AC panel is out doors and the breaker could or would
serve as the point of disconnect.

 

What does your AHJ require in the colder climates?

 

 

Dana Orzel

Great Solar Works, Inc

E - d...@solarwork.com

V - 970.626.5253

F - 970.626.4140

C - 970.209.4076

web - www.solarwork.com

 

"Responsible Technologies for Responsible People since 1988"

Do not ever believe anything, but seriously trust through
action.

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of Al Frishman
Sent: Thursday, January 13, 2011 9:24 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] 690.14 (4) Max Number of
Disconnects

 

Mark,

See answers to your questions below:

 

Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com <http://www.aeonsolar.com/> 

 

 

 

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of Mark Frye
Sent: Wednesday, January 12, 2011 5:26 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] 690.14 (4) Max Number of
Disconnects

 

OK,

 

So what is your plan with regard to 690.14 (D)?

All inverters will have a integrated DC disconnect and I
will install a AC Disco. next to each inverter.

 

It is interesting to ask, do the disconnects required by
690.14 (D) also have to comply with or be counted in with
690.14 (4) and (5).

 

690.13 and 690.14 are pretty confusing in the use of the
term disconnect. Which sections apply to the disconnecting
DC PV source circuits and which sections apply to AC PV
system circuit, which to both? Can the switches integrated
into some inverter by the manufacturer be regarded as the
disconnects required in these sections?

 

Here is my take:  The fused disconnect in the basement is
the PV system disconnecting means of which there is only
one. This switch meets the requirements of 690.15 "...A
single disconnecting means in accordance with 690.17 shall
be permitted for the combined ac output of one or more
inverters or ac modules in an interactive system." It meets
the requirements 690.14 (C) (1) Exception so long as you
comply with 690.31 (E). You still need additional
disconnects on the roof and labelling in accordance with
690.14 (D), but they don't have to comply with 690.14 (4)
(5) so long as there ac outpust are routed thru the 8th
floor load center and thru the switch in the basement.

 

I assume that the fused disconnect is co-located in the
basement with the service equipment?   yes

 

 

 

 
Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
 <http://www.berkeleysolar.com/> www.berkeleysolar.com  

 

 

  _  

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of Al Frishman
Sent: Wednesday, January 12, 2011 1:55 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] 690.14 (4) Max Number of
Disconnects

Hi Mark,

Two will be in the same room as the panel and the rest will
be located on different sections of roof.

 

Al

 

Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com <http://www.aeonsolar.com/> 

 

 

 

 

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of Mark Frye
Sent: Wednesday, January 12, 2011 4:49 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] 690.14 (4) Max Number of
Disconnects

 

Al,

 

Are the inverters located inside on the 8th floor with the
MLP panel or are they located on the roof?

 

Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
 <http://www.berkeleysolar.com/> www.berkeleysolar.com  

 

 

  _  

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of Al Frishman
Sent: Wednesday, January 12, 2011 1:11 PM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] 690.14 (4) Max Number of Disconnects

Hi Wrencher's

I am working on a system with 10 inverters.  The output of
all 10 single phase inverters will be combined in a main lug
only panel located on the 8th floor (each inverter will have
a 2 pole breaker).  The MLO Panel will be protected by a
fused switch located in the basement.  Does the panel on the
8th floor used to combine all 10 inverters need to have a
main breaker in order to comply with 690.14 (4)?   

 

Any and all feedback is appreciated.

 

 

Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com <http://www.aeonsolar.com/> 

 

 

_

Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects

[Al Frishman]

Mark,

See answers to your questions below:

 

Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com <http://www.aeonsolar.com/> 

 

 

 

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Mark Frye
Sent: Wednesday, January 12, 2011 5:26 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects

 

OK,

 

So what is your plan with regard to 690.14 (D)?

All inverters will have a integrated DC disconnect and I will install a AC
Disco. next to each inverter.

 

It is interesting to ask, do the disconnects required by 690.14 (D) also
have to comply with or be counted in with 690.14 (4) and (5).

 

690.13 and 690.14 are pretty confusing in the use of the term disconnect.
Which sections apply to the disconnecting DC PV source circuits and which
sections apply to AC PV system circuit, which to both? Can the switches
integrated into some inverter by the manufacturer be regarded as the
disconnects required in these sections?

 

Here is my take:  The fused disconnect in the basement is the PV system
disconnecting means of which there is only one. This switch meets the
requirements of 690.15 "...A single disconnecting means in accordance with
690.17 shall be permitted for the combined ac output of one or more
inverters or ac modules in an interactive system." It meets the requirements
690.14 (C) (1) Exception so long as you comply with 690.31 (E). You still
need additional disconnects on the roof and labelling in accordance with
690.14 (D), but they don't have to comply with 690.14 (4) (5) so long as
there ac outpust are routed thru the 8th floor load center and thru the
switch in the basement.

 

I assume that the fused disconnect is co-located in the basement with the
service equipment?   yes

 

 

 

 
Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
 <http://www.berkeleysolar.com/> www.berkeleysolar.com  

 

 

  _  

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Al Frishman
Sent: Wednesday, January 12, 2011 1:55 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects

Hi Mark,

Two will be in the same room as the panel and the rest will be located on
different sections of roof.

 

Al

 

Al Frishman
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Mark Frye
Sent: Wednesday, January 12, 2011 4:49 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects

 

Al,

 

Are the inverters located inside on the 8th floor with the MLP panel or are
they located on the roof?

 

Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
 <http://www.berkeleysolar.com/> www.berkeleysolar.com  

 

 

  _  

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Al Frishman
Sent: Wednesday, January 12, 2011 1:11 PM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] 690.14 (4) Max Number of Disconnects

Hi Wrencher's

I am working on a system with 10 inverters.  The output of all 10 single
phase inverters will be combined in a main lug only panel located on the 8th
floor (each inverter will have a 2 pole breaker).  The MLO Panel will be
protected by a fused switch located in the basement.  Does the panel on the
8th floor used to combine all 10 inverters need to have a main breaker in
order to comply with 690.14 (4)?   

 

Any and all feedback is appreciated.

 

 

Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com <http://www.aeonsolar.com/> 

 

 

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Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects

[Mark Frye]

OK,
 
So what is your plan with regard to 690.14 (D)?
 
It is interesting to ask, do the disconnects required by 690.14 (D) also
have to comply with or be counted in with 690.14 (4) and (5).
 
690.13 and 690.14 are pretty confusing in the use of the term disconnect.
Which sections apply to the disconnecting DC PV source circuits and which
sections apply to AC PV system circuit, which to both? Can the switches
integrated into some inverter by the manufacturer be regarded as the
disconnects required in these sections?
 
Here is my take:  The fused disconnect in the basement is the PV system
disconnecting means of which there is only one. This switch meets the
requirements of 690.15 "...A single disconnecting means in accordance with
690.17 shall be permitted for the combined ac output of one or more
inverters or ac modules in an interactive system." It meets the requirements
690.14 (C) (1) Exception so long as you comply with 690.31 (E). You still
need additional disconnects on the roof and labelling in accordance with
690.14 (D), but they don't have to comply with 690.14 (4) (5) so long as
there ac outpust are routed thru the 8th floor load center and thru the
switch in the basement.
 
I assume that the fused disconnect is co-located in the basement with the
service equipment?
 
Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
 <http://www.berkeleysolar.com/> www.berkeleysolar.com  
 

  _  

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Al Frishman
Sent: Wednesday, January 12, 2011 1:55 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects



Hi Mark,

Two will be in the same room as the panel and the rest will be located on
different sections of roof.

 

Al

 

Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com <http://www.aeonsolar.com/> 

 

 

 

 

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Mark Frye
Sent: Wednesday, January 12, 2011 4:49 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects

 

Al,

 

Are the inverters located inside on the 8th floor with the MLP panel or are
they located on the roof?

 

Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
 <http://www.berkeleysolar.com/> www.berkeleysolar.com  

 

 

  _  

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Al Frishman
Sent: Wednesday, January 12, 2011 1:11 PM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] 690.14 (4) Max Number of Disconnects

Hi Wrencher's

I am working on a system with 10 inverters.  The output of all 10 single
phase inverters will be combined in a main lug only panel located on the 8th
floor (each inverter will have a 2 pole breaker).  The MLO Panel will be
protected by a fused switch located in the basement.  Does the panel on the
8th floor used to combine all 10 inverters need to have a main breaker in
order to comply with 690.14 (4)?   

 

Any and all feedback is appreciated.

 

 

Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com <http://www.aeonsolar.com/> 

 

 

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Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects

[Al Frishman]

Hi Mark,

Two will be in the same room as the panel and the rest will be located on
different sections of roof.

 

Al

 

Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com <http://www.aeonsolar.com/> 

 

 

 

 

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Mark Frye
Sent: Wednesday, January 12, 2011 4:49 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects

 

Al,

 

Are the inverters located inside on the 8th floor with the MLP panel or are
they located on the roof?

 

Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
 <http://www.berkeleysolar.com/> www.berkeleysolar.com  

 

 

  _  

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Al Frishman
Sent: Wednesday, January 12, 2011 1:11 PM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] 690.14 (4) Max Number of Disconnects

Hi Wrencher's

I am working on a system with 10 inverters.  The output of all 10 single
phase inverters will be combined in a main lug only panel located on the 8th
floor (each inverter will have a 2 pole breaker).  The MLO Panel will be
protected by a fused switch located in the basement.  Does the panel on the
8th floor used to combine all 10 inverters need to have a main breaker in
order to comply with 690.14 (4)?   

 

Any and all feedback is appreciated.

 

 

Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com <http://www.aeonsolar.com/> 

 

 

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Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects

[Darryl Thayer]

I had a similar situation in Minnesota, my local inspector was puzzeled but the 
regional inspector said ABSOLUTLY  the solar equipment has to be shut off with 
no more than 6 motions of the hand.  I combined the AC into a panel of 12 
breakers, with one main (i had 12 inverters).  For the DC side I did something 
DT but I could have used 2 each 6 pole Square D 600 volt 30 amp Disconnects 
or 3 each 4 pole, or 4 each 3 pole to complete the disconnect requirement
Darryl





From: Al Frishman 
To: re-wrenches@lists.re-wrenches.org
Sent: Wed, January 12, 2011 3:11:17 PM
Subject: [RE-wrenches] 690.14 (4) Max Number of Disconnects


Hi Wrencher’s
I am working on a system with 10 inverters.  The output of all 10 single phase 
inverters will be combined in a main lug only panel located on the 8th floor 
(each inverter will have a 2 pole breaker).  The MLO Panel will be protected by 
a fused switch located in the basement.  Does the panel on the 8th floor used 
to 
combine all 10 inverters need to have a main breaker in order to comply with 
690.14 (4)?   
 
Any and all feedback is appreciated.
 
 
Al Frishman
AeonSolar
(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com


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Re: [RE-wrenches] 690.14 (4) Max Number of Disconnects

[Mark Frye]

Al,
 
Are the inverters located inside on the 8th floor with the MLP panel or are
they located on the roof?
 
Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
 <http://www.berkeleysolar.com/> www.berkeleysolar.com  
 

  _  

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Al Frishman
Sent: Wednesday, January 12, 2011 1:11 PM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] 690.14 (4) Max Number of Disconnects



Hi Wrencher's

I am working on a system with 10 inverters.  The output of all 10 single
phase inverters will be combined in a main lug only panel located on the 8th
floor (each inverter will have a 2 pole breaker).  The MLO Panel will be
protected by a fused switch located in the basement.  Does the panel on the
8th floor used to combine all 10 inverters need to have a main breaker in
order to comply with 690.14 (4)?   

 

Any and all feedback is appreciated.

 

 

Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
 <http://www.aeonsolar.com/> www.aeonsolar.com

 

 

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[RE-wrenches] 690.14 (4) Max Number of Disconnects

[Al Frishman]

Hi Wrencher's

I am working on a system with 10 inverters.  The output of all 10 single
phase inverters will be combined in a main lug only panel located on the 8th
floor (each inverter will have a 2 pole breaker).  The MLO Panel will be
protected by a fused switch located in the basement.  Does the panel on the
8th floor used to combine all 10 inverters need to have a main breaker in
order to comply with 690.14 (4)?   

 

Any and all feedback is appreciated.

 

 

Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
  www.aeonsolar.com

 

 

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