Bill, I've done several of these systems with Wattsun and Enphase 190 and M215. I tap 120 vac off the 240 line at the tracker control panel that I build to a 12v ps which can be supplied by Wattsun. Make sure you insert a 5 Amp ac breaker for the ps and you'll be fine. I have over a dozen trackers like that in the field with 4 plus years of service with out an issue
Christopher
Chris Schaefer's
Solar & Wind FX
Inc.
WHERE KNOWLEDGE EQUALS POWER INDEPENDENCE
Tel 585-229-2083 ~ Cell 585-748-1870
5115 South Hill Road ~ Canandaigua New York 14424
www.solarandwindfx.com <http://www.solarandwindfx.com/> ~
E-mail: [email protected]
<http://www.nabcep.org/> NABCEP
_____
From: [email protected]
[mailto:[email protected]] On Behalf Of William
Dorsett
Sent: Wednesday, June 27, 2012 4:23 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] Tapping from one leg of a 240V inverter to power
atracker?
We are doing a tracking system and need to run a couple conductors back out
from the house to power the tracker. I suggested that we tap off of the
output from one of the AC legs of the Enphase output instead. From the
inventor of the tracker: from the manufacturer"The tracker needs 12V 10A on
demand. I have found that a small battery w/ charger nearby or AC to DC
converter to 20A (for surge) will work." These would be short surges of
perhaps 4 seconds. Since it is backfeeding onto the lines instead of
powering a device, i.e. a motor which might overheat if there is an
imbalance, the only consideration would seem to be that the frequency of the
signal remain stable. Once in the bus bar of the house panel, it would be
irrelevant that there would be a temporary voltage drop or slight imbalance.
Any thoughts? Thank you.
Bill Dorsett
Sunwrights
1715 Leavenworth
Manhattan, KS
785/539-1956 Home/Office
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