Todd K's posts

Posted by Todd K on Nov 3, 2008 03:17 pm

#1 -  Renewable Energy > For Sale > Go Power 1750HD power inverter for sale on ebay, barely used
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MESELX:IT&item=180303804270
 

Posted by Todd K on Oct 7, 2008 10:19 pm

#2 -  Renewable Energy > Technical Discussion: Other > Re: grounding a small DC/AC system?
I plan to make following changes.
- Connect PV Panel grounds straight to secondary ground rod, which is bonded to primary electrode
- Run wire same size as largest wire in system from primary ground rod up to DC ground bus, which will have wires connected from each inverter ground, equipment grounds, and neg side of battery bank.
- Bond neutral to ground in AC fuse panel and then either bond AC ground bus to Dc ground bus? Or run a direct wire from AC ground bus to primary electrode?

-Install 100A circuit breaker for my main 300 watt truesine inverter, 200A breaker for modified sine 1750 watt inverter, which will give me a fuse and DC disconnect for both inverters.

-Install
- 5A breaker in AC Fuse box
-15A breakers will remain for each PV panel, charge controller to battery, and Charge Controller to DC Loads.

Look good?

 

Posted by Todd K on Oct 5, 2008 12:13 pm

#3 -  Renewable Energy > Technical Discussion: Other > Re: grounding a small DC/AC system?
The only AC source is coming from the inverter. I have the  300 watt prosine inveter wired into lights and outlets, and i have a modified sine wave 1750 watt inverter that is hooked up to battery but i just plug a vacum and tools etc into the outlets on this inverter.
 

Posted by Todd K on Oct 4, 2008 09:30 pm

#4 -  Renewable Energy > Technical Discussion: Other > Re: grounding a small DC/AC system?
Okay so I need to;
1- run my grounding wires from PV panels straight to a grounding rod?
2- Separate the DC and AC grounds.

- Can I run all 3 grounding systems to the same grounding rod or do i need separate ground rods for each that aren't connected/bonded to each other and a certain distant apart?
- Coming off the AC inverter I need to bond neutral to earth ground?
- I have a switch for each inverter to shut off the power supply... Can I use these or do I need an actual DC disconnect switch box?

Thank you for the info
 

Posted by Todd K on Oct 2, 2008 09:54 pm

#5 -  Renewable Energy > Technical Discussion: Other > grounding a small DC/AC system?
How should I ground my system and or change it.
128 watts of PV panels with two trojan 105 AH batteries, prostar15 controller, circuit breaker box with 15 amp breakers for (each pv panel, DC power, and battery).
 Powers DC lights and DC water pump through the controller, also have a 300w suresine(truesine) inverter and a go power 1750 (modified sine)watt inverter. The sure sine inverter is wired to AC lights and outlets, the larger inverter isn't wire to anything else.
 I have two grounding rods 8 ft apart bonded with 2 gauge wire that then feeds into a grounding strip from which grounding wires run to inverters, pv panels and the AC ground.
 Do I need to separate the grounding rods/grounding system for AC and DC? Do I need to ground the negative side of my batteries? What all do I need to change with my setup.
Thanks
 Here's a pic of part of my setup

http://i183.photobucket.com/albums/x206/shackjack/solarsetup1.jpg

http://i183.photobucket.com/albums/x206/shackjack/IMG_0296.jpg
 

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