Re: [RE-wrenches] Conduit across walkways

2015-07-22 Thread Benn Kilburn 
If it is in a walking traffic area of concern, build a short step  or steps 
over the conduit. Use unistrut and have it sitting (ballasted perhaps so it 
won't move) on dura blocks. 
Google "Cooper B-line" They have a line of strut products for just about 
everything and you can probably get some good ideas from them. 

Benn Kilburn
SkyFire Energy Inc. 
780-906-7807


> On Jul 22, 2015, at 1:17 PM, Andrew Truitt  wrote:
> 
> 
> Wrenches - What is your take on conduit across walkways on commercial 
> rooftops?  
> 
> 
> 
> 
> 
> The 2012 IFC says "The DC combiner boxes shall be located such that conduit 
> runs are minimized in the pathways between arrays." so that would indicate 
> that this is acceptable.  Is there anything in the NEC or OSHA that requires 
> some type of step or protection for conduits in access walkways?  I am 
> concerned with a scenario where the conduit is covered with snow and becomes 
> an even bigger trip hazard and potential source of damage to the DC 
> conductors.
> 
> 
> 
> For a brighter energy future,
> 
> 
> Andrew Truitt 
> 
> Principal
> Truitt Renewable Energy Consulting, LLC
> 
> (202) 486-7507
> 
> LinkedIn Profile
> 
> Company Website
> 
> NABCEP Certified PV Installation Professional ID: 032407-66
> 
> Colorado Journeyman Electrician License No.: 600132
> 
> 
> 
> "Don't get me wrong: I love nuclear energy! It's just that I prefer fusion to 
> fission. And it just so happens that there's an enormous fusion reactor 
> safely banked a few million miles from us. It delivers more than we could 
> ever use in just about 8 minutes. And it's wireless!"
> 
> ~William McDonough
> 
> 
> 
> 
> 
> 
> 
> 
> 
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Re: [RE-wrenches] Conduit across walkways

2015-07-22 Thread August Goers 
Andrew,



I’m by no means an expert in this area, but it has come up over and over
again for our commercial and residential installations. There is no
question that a) avoiding conduit in walkways is nearly impossible and b)
it is a trip hazard. I’m not aware of any particular OSHA requirements,
this link has the closest info I could find:



https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9714



Typically a rooftop is not considered a readily accessible area so I don’t
think the OSHA stuff really applies. Once again, I haven’t deeply
researched it so I may be wrong.



If, for example, you have EMT on the roof then NEC article 358 would apply.
358.12(1) Uses Not Permitted – Where, during installation or afterward, it
will be subject to sever physical damage. I think it is hard to make a case
for severe physical damage on a roof.



The 2013 California Fire Code section 605.11.2 specifies locations of DC
conductors. I can’t copy the paste the language because the pdf I have a
copy protected, but in a nutshell they want conduit run as close as
possible to a ridge or hip or valley (doesn’t apply to flat commercial
roofs) and then run as directly as possible to outside walls.



Common sense dictates that the conduit should be marked with a bright paint
or tape of some sort when they cross walkway areas. Anyone who’s spent time
on the roof has probably tripped on conduit and or ground wire while
working on the array. It would be even better to put some ramps to avoid
the trip hazard altogether but that gets expensive really fast.



-August





*From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
Behalf Of *Andrew Truitt
*Sent:* Wednesday, July 22, 2015 12:17 PM
*To:* RE-wrenches
*Subject:* [RE-wrenches] Conduit across walkways





Wrenches - What is your take on conduit across walkways on commercial
rooftops?





[image: Inline image 1]





The 2012 IFC says "The DC combiner boxes shall be located such that conduit
runs are minimized in the pathways between arrays." so that would indicate
that this is acceptable.  Is there anything in the NEC or OSHA that
requires some type of step or protection for conduits in access walkways?
I am concerned with a scenario where the conduit is covered with snow and
becomes an even bigger trip hazard and potential source of damage to the DC
conductors.







For a brighter energy future,


Andrew Truitt

Principal
Truitt Renewable Energy Consulting, LLC

(202) 486-7507

LinkedIn Profile
<https://tracking.cirrusinsight.com/079df0b1-ab1c-4515-b1e0-d7a6f92238bd/linkedin-com-in-andrewtruitt>

Company Website
<https://tracking.cirrusinsight.com/079df0b1-ab1c-4515-b1e0-d7a6f92238bd/truittreconsulting-weebly-com>

NABCEP Certified PV Installation Professional ID: 032407-66

Colorado Journeyman Electrician License No.: 600132

[image: 24 copy.jpg]

"Don't get me wrong: I love nuclear energy! It's just that I prefer fusion
to fission. And it just so happens that there's an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it's wireless!"

~William McDonough
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Re: [RE-wrenches] Conduit across walkways

2015-07-22 Thread Glenn Burt 
We would paint them a bright contrasting color (not blue, red or yellow) and 
place ballast blocks on either side as protection.

Sincerely,
Glenn Burt
Sent from my 'smart' phone so please excuse grammar and typos.

-Original Message-
From: "Andrew Truitt" 
Sent: ‎7/‎22/‎2015 15:17
To: "RE-wrenches" 
Subject: [RE-wrenches] Conduit across walkways

Wrenches - What is your take on conduit across walkways on commercial
rooftops?


[image: Inline image 1]


The 2012 IFC says "The DC combiner boxes shall be located such that conduit
runs are minimized in the pathways between arrays." so that would indicate
that this is acceptable.  Is there anything in the NEC or OSHA that
requires some type of step or protection for conduits in access walkways?
I am concerned with a scenario where the conduit is covered with snow and
becomes an even bigger trip hazard and potential source of damage to the DC
conductors.



For a brighter energy future,


Andrew Truitt

Principal
Truitt Renewable Energy Consulting, LLC

(202) 486-7507

LinkedIn Profile
<https://tracking.cirrusinsight.com/079df0b1-ab1c-4515-b1e0-d7a6f92238bd/linkedin-com-in-andrewtruitt>

Company Website
<https://tracking.cirrusinsight.com/079df0b1-ab1c-4515-b1e0-d7a6f92238bd/truittreconsulting-weebly-com>

NABCEP Certified PV Installation Professional ID: 032407-66

Colorado Journeyman Electrician License No.: 600132

 <%28202%29%20486-7507>

[image: 24 copy.jpg]

"Don't get me wrong: I love nuclear energy! It's just that I prefer fusion
to fission. And it just so happens that there's an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it's wireless!"

~William McDonough
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[RE-wrenches] Conduit across walkways

2015-07-22 Thread Andrew Truitt 
Wrenches - What is your take on conduit across walkways on commercial
rooftops?


[image: Inline image 1]


The 2012 IFC says "The DC combiner boxes shall be located such that conduit
runs are minimized in the pathways between arrays." so that would indicate
that this is acceptable.  Is there anything in the NEC or OSHA that
requires some type of step or protection for conduits in access walkways?
I am concerned with a scenario where the conduit is covered with snow and
becomes an even bigger trip hazard and potential source of damage to the DC
conductors.



For a brighter energy future,


Andrew Truitt

Principal
Truitt Renewable Energy Consulting, LLC

(202) 486-7507

LinkedIn Profile


Company Website


NABCEP Certified PV Installation Professional ID: 032407-66

Colorado Journeyman Electrician License No.: 600132

 <%28202%29%20486-7507>

[image: 24 copy.jpg]

"Don't get me wrong: I love nuclear energy! It's just that I prefer fusion
to fission. And it just so happens that there's an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it's wireless!"

~William McDonough
___
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