Thanks Hans, we look forward to meeting you there!
From: RE-wrenches on behalf of Kent
Osterberg
Sent: Monday, June 15, 2020 4:06 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] White wire for DC- after ground fault breaker
William,
This is new for the 2017
William,
This is new for the 2017 code:
2017 NEC 690.13(D) An equipment disconnecting means shall simultaneously
disconnect all current carrying conductors that are not solidly
grounded. Yet Schneider, Outback, Midnite, Magnum, and ... all still
have a single PV wire disconnected at the charge
It also seems like there should be some sort of wire marking to indicate
functional grounding. This code change makes sense, but it unleashes
many new questions as well. My vote is that is that PV is already
current limited, so I don't see good reason to add fusing to the
"functionally ground
Wrenches:
Well now that the NFPA has acknowledged that GFDI protected circuits do not
solidly ground the “grounded“ conductor, and we know they can’t be white in
color, it begs the next question: Should these sort-of-grounded grounded
conductors be switched and over-current protected?
The
James, where is the CT located?
If it’s in a panelboard/loadcenter, I understand that they are not “certified”
to allow CT’s inside so the work-around is to pass the conductors thru a
jbox before the panelboard and locate the CTs there.
Benn Kilburn
SkyFire Energy
780-906-7807
> On Jun 14
James,
I might open the ground fault breaker and show him with the ohmmeter that
this is not a solidly grounded system. You are absolutely correct with
this and if he gets tough just let him know you need him to sign off
personally that you had informed him of this exact code reference. Or he
ma
James,
Here's the code reference: 2017 690.31(B)(1). Only solidly grounded PV
system conductors shall be marked in accordance with 200.6 (white or gray).
Kent Osterberg
Blue Mountain Solar
On 6/13/2020 5:56 PM, James Jarvis wrote:
Brian, thank you very much. With your hint of "functional gro
Brian, thank you very much. With your hint of "functional ground" I can
clearly see that I am not allowed to have those be white wires.
Now time for me to incur the full wrath by daring to question the infinite
wisdom of the "highly qualified individual" from the state.
(all kinds of fun stuff fr
Change in 2017 to “functional grounded” was to clarify this - it’s not solid
when it is thru a fuse or breaker than can be interrupted either in the event
of a ground-fault or if the breaker is intentionally opened. 2017 makes it
clear that there are very few solidly grounded systems (2 or less
James, Wrenches
Traditionally we oy use black + and white - for a grounded PC system enen
with RSD, Systems that are not grounded are red + and black - which can be
confusing. White is associated with neutral and connected to earth, black
hot and red hot and we always use either USE-ll or PV wire,
I take it he will not allow you to tape the wiring with white tape and
put a warning sign on the JB? You have to do what he wants but I feel your
pain. Good Luck! I would think a good electrician would measure first:)
Dave Angelini Offgrid Solar
"we go where powerlines
don't"
http://members.st
11 matches
Mail list logo
