100 year flood plain

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PURE

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columbus, ohio
We are looking to install an 18kw ground mount array along the river in Delaware co, Ohio. They have a few old barns and buildings on the lot, and now they are adding a new Home. The plot plan has this area marked as a 100 year flood plan, the CBO in Delaware told me to review NFPA 70 regarding equipment requirements for elevations above the base flood elevation.

HMMMMM... what? :dunce:
 
PURE said:
We are looking to install an 18kw ground mount array along the river in Delaware co, Ohio. They have a few old barns and buildings on the lot, and now they are adding a new Home. The plot plan has this area marked as a 100 year flood plan, the CBO in Delaware told me to review NFPA 70 regarding equipment requirements for elevations above the base flood elevation.

HMMMMM... what? :dunce:
Click to expand...

The base flood elevation is a plane located 2 ft above the 100-year flood elevation. All electrical equipment should be located above this level. Let's say that your array is on level ground which is at an elevation of 45'. FEMA has a local map showing the boundary of the flood plain at 52', or 7' above ground. You have to keep all electrical equipment at an elevation of not less than 54', or 9' above ground. This does not include conductors.
 
9' ?

9' ?

I believe the only electrical equipment at the array will be the 2 inverters and a 100amp combiner panel. So this will need to be pole mounted at 9' off grade with access platform or earth mounded to 4' under it?
The lower edge of the array is 18", and the top edge is 7', wonder if the Panels will need raised?
Flood plain pain:rant:
 
Is the "two foot above" requirement only for solar related requirement?
 
PURE said:
I believe the only electrical equipment at the array will be the 2 inverters and a 100amp combiner panel. So this will need to be pole mounted at 9' off grade with access platform or earth mounded to 4' under it?
The lower edge of the array is 18", and the top edge is 7', wonder if the Panels will need raised?
Flood plain pain:rant:
Click to expand...

Well, change the numbers to what you actually have!!! :lol: If I guessed the real numbers, I'm going to buy $1,000 worth of lottery tickets!
 
A company I used to work for got the contract to build a 2MW PV system in a flood plain. Getting the modules up above the flood plain was simple enough, but the 1MW central inverters, not so much. We priced several platforms which were all hideously expensive, but then one of our guys came up with the idea of procuring a steel shipping container and using it to boost the inverters up above the flood plain. I moved on before the system was built but I'm pretty sure that's what they used.
 
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