US versus DE installation costs [RE-wrenches]

[William Korthof]

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John,

Excellent summary of the bizarre safety/standards for PV that only
seem to have been adopted in the US (and Canada... hmmmm).
It's amazing how arcane and non-sensical the world of Standards
can (and has) become...

/wk

At 04:57 PM 4/18/03 -0700, you wrote:
>Wrenches:
>
>I sent an email to Germany asking for some more information from the
>guys at Photon. A few things to note about installation costs in
>Germany.  They have much lower installation costs for several reasons,
>including:
>
>- No "really expensive and totally unnecessary" dc disconnect switch
>required. Just use the MC connectors on the inverter which are not
>allowed here because somehow having them on the inverter is different
>than having them on the back of the array. Hmmm....

(snip)

>- No conduits required between the inverter and the ac panel. Just use
>the watertight connector that plugs into the inverter and the sunlight
>resistant jacketed cable to wire directly into the sub panel.
>
>Now a disclaimer:
>I have just come back from a Standards meeting where otherwise
>intelligent people will tell you all day long that these requirements
>make perfect sense because that is how we have always done it.  Perhaps
>my reasoning is a bit clouded as a result of my recent extended exposure
>into this way of thinking.  I gotta go.
>
>Happy holidays to all!
>
>Best Regards,
>
>John Berdner

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