[RE-wrenches] Actual losses from dissimilar orientations on single inverter

2008-09-12 Thread August Goers
Wrenches - The correspondence below brings up a question I've been pondering... What are the actual losses due to differing string orientations on a single inverter? Are there significant differences between the major inverter manufacturers? What if we have a very steep roof facing East - West,

Re: [RE-wrenches] Actual losses from dissimilar orientations on single inverter

2008-09-12 Thread Darryl Thayer
Hi all There are a couple of principals here 1) NEVER NEVER PUT TWO STRINGS OF DIFFERENT ORIENTATION IN SERIES!! 2)The currents are dependent upon irradiance, which varies greatly. 3) The voltage and the Vmp is rather close for varying irradiance, and therefore if forced non coincident

[RE-wrenches] Needed: MC panel mount connectors

2008-09-12 Thread William Miller
Friends: We have developed installation techniques that employ the Multi-Contact Generation 2 connectors in a panel mount style. These mount on a box with a plastic nut and have the pin inserted in the back. MC has been experiencing a QA problem in their factory and can not provide

[RE-wrenches] Fw: nabcep

2008-09-12 Thread tump
--Original Message-- From: Jesse Dahl To: [EMAIL PROTECTED] Sent: Sep 12, 2008 5:24 PM Subject: nabcep   Hi there I am a member of your brother-in-laws union, and will be taking my NABCEP test next march. I completed ALL of the requirements that the union, Daryll, and NABCEP asked of

Re: [RE-wrenches] Actual losses from dissimilar orientations onsingle inverter

2008-09-12 Thread Sky Sims
August makes a good point. There really isn't much solid info on the topic of dissimilar orientations. In the experiments I've conducted using different orientations and tilts on the same strings the production almost exactly matches the average projected production across the orientations and

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