EcoRenovator - View Single Post - Solar PV MPPT board for Hot Water heating

Xringer · 02-03-13, 02:36 PM

Solar Hybrid Hot Water Solution - No Plumbing Mods Required - At TechLuck

Specs:
Abs Max Voltage: 250V DC
Abs Max Current: 20A (extra heat sink required)
Efficiency: 97%

There's a link on the http://techluck.com/ page to boards for sale on Ebay.

This looks like a board I could use on my brand new GE hotwater tank..

It should handle my 144Vdc 800W array just fine.. Maybe need a larger heat sink..?.
The guy that makes them said "The main mosfet is 40A at 1200V and the board traces can handle 20A"..

You would need a 5 KW PV array to fully test his spec!

If I was able to average just 400 watts for 4 or 5 hours a day, that would put 1,364 BTU into my tank each hour.
In the summer time, It would do a lot better.

Pretty sure that would keep the A7 from coming on as much..

I'm going to see if I can get the builder to register here, so he can
answer some questions about the product.

02-03-13, 02:36 PM	#1
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Solar PV MPPT board for Hot Water heating Solar Hybrid Hot Water Solution - No Plumbing Mods Required - At TechLuck Specs: Abs Max Voltage: 250V DC Abs Max Current: 20A (extra heat sink required) Efficiency: 97% There's a link on the http://techluck.com/ page to boards for sale on Ebay. This looks like a board I could use on my brand new GE hotwater tank.. It should handle my 144Vdc 800W array just fine.. Maybe need a larger heat sink..?. The guy that makes them said "The main mosfet is 40A at 1200V and the board traces can handle 20A".. You would need a 5 KW PV array to fully test his spec! If I was able to average just 400 watts for 4 or 5 hours a day, that would put 1,364 BTU into my tank each hour. In the summer time, It would do a lot better. Pretty sure that would keep the A7 from coming on as much.. I'm going to see if I can get the builder to register here, so he can answer some questions about the product. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less.. Last edited by Xringer; 02-10-13 at 01:54 PM.. Reason: old link.