The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Calling all Non-US members!! (Non-US only)
by aussie240
Today at 02:39 AM
Photo Upload Tutorial
by DanK
Yesterday at 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 9
Texas_Ranger 8
sparkyinak 7
Trumpy 6
Who's Online
1 registered (ampherder), 233 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#51883 - 05/14/05 02:08 PM Campus style solar solutions
e57 Offline
Member

Registered: 05/27/03
Posts: 2837
Loc: S.F.,CA USA
A friend of mine owns a hostle/hotel near Yosemite National Park, which happens to get a good deal of sun year round, blazing in the summer. Anyway he was thinking of adding solar, as a way of adding electrical capacity for an expansion he thinking of doing. Haven't told him yet that it's not a way of adding 'real' capacity in service size, but on the flip side is (in his situation) a good bill reducer power consumtion. Either selling power back, or having the maint. nightmare of dealing with lots of batteries for storing for use.

Anyway, I don't do solar... But from what I understand, it would all have to go back to the main for disconnect. (Think this is a POCO thing, PG&E to be correct.) Problem is that the main/metering is in the middle of a fairly sizable campus of buildings. Do they all have to go back there? Or could it be done at the panels at each building, with an inverter at each?

Anyone familiar with type of thing? Thanks in advance.

Mark
_________________________
Mark Heller
"Well - I oughta....." -Jackie Gleason

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#51884 - 05/15/05 09:05 AM Re: Campus style solar solutions
harold endean Offline
Member

Registered: 02/16/02
Posts: 2248
Loc: Boonton, NJ
Mark,
I have seen 2 house's with PhotoVolatic (PV)systems installed. The collectors are on the roof and they generate DC power which then traveled down into the garage to a rectifier, then into the normal house panel. ( I am trying to remember from memory.) When the sun was out full bright the POCO meter would actually run backwards. There were no storage batteries and the POCO has to buy back any surplus energy. the PV system couldn't handle the whole house and all the HVAC but it helped on cool spring/fall days. There was a great article just recently in IAEI magazine, I would have to go back and look it up if you are interested.

Top
#51885 - 05/15/05 10:45 AM Re: Campus style solar solutions
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5305
Loc: Blue Collar Country
Harold, I believe you are thinking of the March/April 2004 issue of IAEI news....which might be available on their web site www.IAEI.org

Otherwise, I would be very vary of information from "alternative power" resources, as well as equipment dealers/makers/installers. Too many times, the have little knowledge of, or respect for, electrical codes.

There is also the very real risk of such systems creating a hidden danger for PoCo personnel. Your PoCo has rules, I'm sure, that apply to adding such a service. In a small, but very real, way, you are adding another "generating station" to the grid.

As for "reverse metering," this is not yet nation-wide. That varies by state. Much information is available from Home Power Magazine www.homepower.com but, again, take their information very carefully!

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals