Re: [RE-wrenches] Retaining Clips

Drake Wed, 30 Nov 2016 18:01:00 -0800

Hi Adam,

It ok for the main lugs to be hot. There will
always be a hot wire in the box somewhere. The
main lugs are a very safe place to land it. Even
with main breakers, the lugs feeding the breakers are always hot.


This is a lot safer than having an "always hot"
wire going to a breaker that could conceivably
come loose even with a retainer.

Best,

Drake


At 02:11 PM 11/30/2016, you wrote:

I'm also just now realizing that if I were to
rate my wire from the tap/main panel to my 70A
disconnect I would want #6awg wire and the QO breakers only go to #8.Â

Drake if I went from the tap right into the
lugs, it would leave those lugs hot and exposed.
Is that my only option though?Â

Adam Katzman
Autonomous Energies
PO Box 1245
Kingston, NY 12402
<http://www.autonomousenergies.com>www.autonomousenergies.com
(518) 567-1468


On Wed, Nov 30, 2016 at 1:57 PM, Drake
<<mailto:[email protected]>[email protected]>
wrote:
Can you come out of the line side tap to the
lugs, and connect the solar to the breaker
terminals? This way a retainer clip is not required.

At 11:12 AM 11/30/2016, you wrote:

Sorry I should have elaborated more from the beginning.

Ã

I am using the panel as a service disconnect
for a lineside connection (canÃ¢t use a
fused/bladed disco because of space
conconstraints). Originally I bought a QO 70A
panel, but soon realized that the Square D
retention clip (PK2MB) is only compatible with
their larger panels. So I bought a larger panel
(100A 8 Circuit) and then received some
feedback that having the open spaces (even if
labeled that Ã¢Do N Not Add LoadsÃ¢ ) could
raise a flag with an inspector. So then I was
back on the hunt for a dedicated 2 Pole 60A or
70A panel with a compatible retention clip for
a 30A breaker. EatonÃ¢s retention options
only start rt in the 60A range (the smaller
breakers donÃ¢t have the hole in them to to
put the bolt through). Square D said they
donÃ¢t have an option fo for their 70A panel.
There arenÃ¢t any good Siemans distributors
near me be but I wasnÃ¢t t finding an option via google for them either.

Ã

I talked with another Wrencher on the phone and
received this feedback which IÃ¢m just going
to cut and paste to include it it in this thread:


Ã¢The NEC doesnÃ¢t require a hold hold down
clamp for the circuit breaker unless it can be
backfed from a multi-mode or stand-alone inverter (690.10(E)).

The language implies that a hold-down is
therefore not required elsewhere. Most modern
breakers (def. QOÃ¢s) are not ot marked
Ã¢lineÃ¢ ¬ and Ã¢loadÃ¢ so no problem
there (also in in same code section).

Ã

Even when it was a requirement for all PV
outputs, John Wiles had argued that taking off
the panel cover, which required a tool, served
as the hold-down, and this was generally accepted.Ã¢

Ã

So taken that advice IÃ¢â¬m back to using the
QO 70A panel but without a retention clip (or
callingÃ the lid the "retention clip").

Ã

For what its worth I have passed inspections
prior using the retaining clip from a generator
interlock kit (QOCGK2C) on a QO 100A panel, but
feltÃ like there must be a better option out there....

Adam Katzman
Autonomous Energies
PO Box 1245
Kingston, NY 12402
<http://www.autonomousenergies.com>www.autonomousenergies.com
<tel:(518)%20567-1468>(518) 567-1468


On Wed, Nov 30, 2016 at 10:45 AM, Drake
<<mailto:[email protected]>
[email protected]> wrote:
Siemens has main breaker retainers. The
retainers for QO seem work on some boxes and
not others. It doesn't work on 6 space boxes
I've purchased, but does work on the 8.

At 10:14 PM 11/29/2016, you wrote:

Wrenchers,
IÃÂ¢m trying to find a 60A 2 Pole
Breakeaker Box that hashas a compatible
retaining clip. The QO retaining clip
(PK2MBCP) seems to only be compatible with
their 4-8 circuit load centers. What are my options? Thanks!
Thanks
Adam
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Re: [RE-wrenches] Retaining Clips

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