[RE-wrenches] Up for a 1-Line Riddle?

[Dave Click]

Thanks David, I was in residential mode and just saw the 240V listed in 
the OCPD table!

On 2012/8/30 16:47, David Brearley wrote:
> I'm assuming it's a balanced 3-phase interconnection, which fits with the reported phase current of 42 A:
>
> (3 x 5000 W) / 208 V / 1.73 = 41.7 A
>
> Or more simply:
>
> 24 A per inverter x 1.73 = 41.5 A
>
> However, no one reviewing a single-line should have to guess about the service type....
>
> On Aug 30, 2012, at 3:12 PM, Dave Click wrote:
>
>> I've seen that one a lot, too. And not to quibble, but the 1-line depicts this correctly (no inline fuse shown in the inverter DC disconnect box), though there should be a note making this more explicit.
>>
>> Speaking of sunny days turning off the system, how about the 3 30A inverter breakers' combined feed going into a 55A breaker. Also... a 55A breaker? Really? I guess the designer wanted to leave a little headroom to avoid scaring the 60A disconnect.
>>
>> DKC
>>
>> On 2012/8/30 14:35, Andrew Truitt wrote:
>>>
>>> Ahh yes, the old "combine strings before landing on a fused DC input
>>> terminal" trick.  Sure to blow the fuse the first sunny day.  This is
>>> why SMA created their fuse-bypass DC input terminal.  I take it the
>>> installer was not aware of this...
>>>
>>>
>>>
>>> For a brighter energy future,
>>>
>>>
>>> Andrew Truitt
>>> NABCEP Certified PV Installer™ (ID# 032407-66)____
>>>
>>> Principal
>>> Truitt Renewable Energy Consulting____
>>>
>>> (202) 486-7507 <tel:%28202%29%20486-7507>____
>>>
>>> http://www.linkedin.com/pub/andrew-truitt/8/622/713
>>>
>>>
>>>
>>> "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
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Thu, Aug 30, 2012 at 11:53 AM, Jason Szumlanski <jason at fafcosolar.com
>>> <mailto:jason at fafcosolar.com>> wrote:
>>>
>>>     I was sent to look at another contractor's work, and found three
>>>     SB5000 inverters with blown string input fuses. I was able to
>>>     determine the reason pretty quickly, and was later sent the original
>>>     1-Line, which was installed per the drawings. The 1-Line came from a
>>>     "leading system integrator" who shall remain nameless.
>>>
>>>     See anything wrong?
>>>
>>>     https://www.sugarsync.com/pf/D6539806_8669786_010829
>>>
>>>     Just goes to show you - the contractor needs to take responsibility
>>>     and verify the specifications are correct, safe, and code compliant.
>>>
>>>     Jason Szumlanski
>>>     Fafco Solar
>>>
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