disco lug landing [RE-wrenches]

[Todd Cory, Mt. Shasta Energy Services]

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Marco,

The utility intertie will be feeding power back into the grid, 
offsetting the loads, so rather than:
local loads + intertie current = total current from the grid through the 
main circuit breaker, it is
local loads - intertie current = total current from the grid through the 
main circuit breaker.

Connecting to the load side is the proper place.

Todd

Marco Mangelsdorf wrote:

>I've got a non-residential PV application where the only reasonable utility
>tie-in location is the existing 200A fused main service disconnect.  I'm
>going to use a 100A AC fused disconnect which will carry the combined output
>of several inverters.  The question is: where to land the output of the 100A
>inverters' disco--on the line or load side of the existing 200A main service
>disco?  'Seems to me it ought to be on the line side of the 200A disco since
>if it was on the load side, there would be the potential to feed 300A
>through load-side conductors that were spec'ed to carry only 200A.
>Following the tap rule in the NEC, which specifies the conductor size when
>making such a tap, I don't see any problem in tapping into the line
>side...unless I'm missing something...
>
>Marco Mangelsdorf
>President
>ProVision Technologies, Inc.
>69 Railroad Avenue, A-7
>Hilo, Hawai'i 96720
>(808) 969-3281, 934-7462 facsimile
>www.provisiontechnologies.com
>
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-- 
Todd Cory
KE6SXS
toddcory at finestplanet.com
Mt. Shasta Energy Services
License C-10 # 811428 
P.O. Box 689
Mt. Shasta, CA. 96067
(530) 926-1079

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