Commercial line tap [RE-wrenches]

[August Goers]

It is an underground service, as seen in the photo "C" below (see left hand
side of panel). I'm new to this, so it is very possible that I am missing
something. However, the top of the panel is above the meter on the utility
side. We need to tap in after the meter otherwise we're going to send the
utility non-metered free energy. As Jeff O mentioned, I think we need to tie
in somewhere behind the red arc shield above the main 400 A breaker. I'm
going to head out there next week to see if there are any provisions behind
that read arc shield. -August  

 

 

http://www.luminalt.com/temp/400AMainA.JPG

 

 

http://www.luminalt.com/temp/400AMainB.JPG

 

 

http://www.luminalt.com/temp/400AMainC.JPG

 

 

Wrenches:

 

I am planning a ~26 kW commercial PV system which will be tying into a 3
phase 208 V service. I am new to these commercial 3 phase systems so I'm
seeking some help and design ideas for tying into the service. The 400 A
main service panel is maxed out with a 400 A main breaker so we won't be
able to tie our 200 A solar breaker in on the load side. I suppose we're
looking at either a line tap or a service upgrade to a 600 A main. Space is
extremely limited around the main panel - there is not a good area to place
an external fused disconnect so we're hoping that we can fit something in
within the main panel. 

 

The attached photo shows the main panel partially opened up. Any information
on the best way to perform a line tap would be appreciated. Other ideas are
welcome. I'm trying to get some help from Square D but haven't had any luck
yet. 

 

Thanks in advance,

 

August Goers

 

Managing Engineer

Luminalt Energy Corporation

Office:  (415) 564-7652

Mobile:  (415) 559-1525

www.luminalt.com

august at luminalt.com

 

-----Original Message-----
From: Steve Johnson [mailto:stevejohnson at comcast.net] 
Sent: Tuesday, April 10, 2007 7:58 PM
To: RE-wrenches at topica.com
Subject: RE: Commercial line tap [RE-wrenches]

 

 

I must be missing something here. Isn't that your feeder at the top with 

a spare lug on each phase?  Can't you tap in there with your 200 amp 

feeder to the PV distribution panel?

 

What does the outside look like? Overhead or underground?

 

Steve Johnson

LightWave Solar Electric

 

 

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