JESSE & JASON:
There was a thread from about 6 weeks ago
Re: [RE-wrenches] Best practices for conduit penetration on roof
about the use of the SolaDeck as a roof-top AC Source Circuit combiner,
and as a roof-top disconnecting means.
I have two issuesyou should be consider before deciding to use the
SolaDeck Models 0760-41AD and 0766-41AD:
1. The Temperature De-Rating of the existing ABB breakers sold by
SolaDeck could cause high temperature "nuisance trips", particularly on
maximum sized AC strings of 17 Enphase micro-inverters. If a high(er)
temperature rated circuit breaker is not available from ABB, a prudent
design would reduce the maximum number of micro-inverters in an AC
string to 12.
_Manufacturer_: ABB 20A 2-pole din-mounted circuit breaker
_Terminal Temp Rating_: 75C / 167F
_Reference Temperature_: 20C / 68F
_Ambient Temp Derating_:
30C/86F = 18.7A
40C/104F = 17.3A
50C/122F = 15.8A
60C/140F = 14.1A
70C/158F = 12.2A
2. Another issue, at least in some jurisdictions, is the requirement
for a roof-top AC Disconnect for micro-inverter systems. The SolaDeck,
when used as an AC SCCB, may not meet the NEC Article 100 definition for
"readily accessible" because a tool is required to open it.
Regards, Gary
On 1/3/2013 7:44 AM, Jason Szumlanski wrote:
SolaDeck Models 0760-41AD and 0766-41AD are rated for up to 60A at
240Vac.
Give them a call - Steve is very helpful.
*Jason Szumlanski*//
/Fafco Solar
/
On Wed, Jan 2, 2013 at 11:57 PM, Jesse Dahl <dahlso...@gmail.com
<mailto:dahlso...@gmail.com>> wrote:
I find info about the AC soladeck in my distributors catalog, but
I don't find any information about it on Soladeck's website.
On Wed, Jan 2, 2013 at 7:18 PM, Jesse Dahl <dahlso...@gmail.com
<mailto:dahlso...@gmail.com>> wrote:
Hello,
I am in the process of installing a Enphase system that
requires center feeding the individual 15 modules circuits. I
am wondering about wiring the J-Box. I need to cut all of the
boxes into the center of the runs of Engauge cable and
maintain the 6" of free conductor. To do this, I will need to
pull the trunk cable towards the J-Box. There are a few spots
where doing this may pull the inverter connection points to
far from the inverter. It looks like like the spots where
this will be a problem is where the circuit of modules is made
up of modules from different North-South rows of racking. I
took some rough measurements at the end of the day,
but haven't really laid the cable out to check if it will
really be problem.
I'm sure this is common, and easily fixed, but a conformation
from another installer would surely be welcome.
Thanks,
Jesse
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