[RE-wrenches] Amphenol h4 vs MC4

I have a bunch of panels here to put in with an Amphenol H4 connector Seems like I remember some issues connecting some of the other connectors to the MC 4's Do these hook up with the MC 4's without any issues or do I need to find some of the H4 connectors to use ? Thanks, Bob Ellison _

Re: [RE-wrenches] KAUAI CHARITY CASE

FLAs. Sounds like a bad candidate for NiFe. NiFe does give you the extra DOD down to 80%, but can the inverter handle the surge loads at such a low battery voltage? I have that issue with my 12vdc office system; I can really only go down to 50% DOD until the fridge surge kicks the magnum inverter o

Re: [RE-wrenches] Battery Watt hours FLA VS Iron Edison Batteries

I usually shoot for no more than 2-3 days autonomy time, no matter what type of battery bank. Every off-grid home system requires a backup generator anyway. The only things magical in a positive way IMO about NiFe is that they don't sulfate and therefore have a long life, can be stored for long pe

Re: [RE-wrenches] Array/battery relationship (WAS Battery Watt hours FLA VS Iron Edison Batteries)

This client is on Kauai, her cloudy winter storms average 4-5 days. She has a generator [Honda] not an auto start, that several folks have tried to integrate as auto start with no success. Battery maintenance is a challenge for her, as could be expected with a pile of T-105 style batteries, etc. I

[RE-wrenches] KAUAI CHARITY CASE

Thanks Jay I have not used I-E batteries & This is the direct result of my Kauai charity case client online shopping. She was sold an undersized/over promised system: 50% of req’d PV & basically one days storage of T-105 style batteries. She has burned up 2 sets of batteries and has had severa

Re: [RE-wrenches] Array/battery relationship (WAS Battery Watt hours FLA VS Iron Edison Batteries)

Hi Allen, I use the 2-3 day autonomy design approach as well unless there are unusual circumstances. Here in western Colorado this design approach has worked very well. I have been met with some resistance with folks that are used to the large 4-5 battery string designs that were common around h

[RE-wrenches] Array/battery relationship (WAS Battery Watt hours FLA VS Iron Edison Batteries)

Dana (and I'm curious if others agree), I used to work with 4-5 days of storage, back with modules were expensive and batteries were relatively cheap. As in recent years these two have reversed - modules are cheap and batteries are dear - my fundamental design approach has changed. I now design

Re: [RE-wrenches] Battery Watt hours FLA VS Iron Edison Batteries

I recommend 4 days backup min & 5 days backup if budget allows of storage and Iron Edison were saying that 2 days was sufficient. To clarify - I said “magical” as in wondering if there was something special, I-E did not say this. __ Dana O

[RE-wrenches] Lithium battery systems

Hi Chris, I am in our 3rd year of designing and selling Lithium Iron Manganese Phosphate (LFMP) battery systems for our mobile, boat and off grid customers. There is no mystery to using Lithium Iron type batteries with most modern inverter/chargers, although some manufacturers disagree. Our LFM

Re: [RE-wrenches] Battery Watt hours FLA VS Iron Edison Batteries

Tom; I have never seen Iron Edison saying NiFe is "magical" -- do you have a specific webpage on their site that says this? All batteries have advantages and disadvantages, and also myriad technical issues for the installer to overcome. Dan Fink Adjunct Professor of Solar Energy Technology, Ecote

Re: [RE-wrenches] Battery Watt hours FLA VS Iron Edison Batteries

Tom, Dana -- I'm quite happy with the nickel iron battery bank that runs my office. But you as the installer have to deal with the odd charge / discharge curves and program the equipment to work with that. Just like any other battery technology that is not lead-acid. Dan Fink Adjunct Professor of

Re: [RE-wrenches] Lithium battery systems

Check with Iron Edison in Denver about their LiFePo batteries. The BMS is built in. They support Radian. https://ironedison.com/48-volt-lithium-battery-for-solar Dan Fink Adjunct Professor of Solar Energy Technology, Ecotech Institute IREC Certified Instructor™ for: ~ PV Installation Professional

Re: [RE-wrenches] Battery Watt hours FLA VS Iron Edison Batteries

Hi Dana Two thoughts... how many days of autonomy are they quoting? If nickel Iron were this magical how come nobody has noticed them for the past 100 years? Kind regards Tom Duffy Senior Solar Design Engineer [Solar-Biz-new-logo-800X300] E-Mail: t...@solar-biz.com *

[RE-wrenches] Lithium battery systems

I'm curious to see if anyone is finding Lithium battery systems available that will be suitable for an Outback Radian based system. Let me know what is out there please. -- Chris Mason NABCEP Certified Solar PV Installer™ Solar Design Engineer Generac Generators Industrial technician www.cometso

[RE-wrenches] Battery Watt hours FLA VS Iron Edison Batteries

Good Morning All, I have a charity case client that needs 760 to 900 AHR at 24 VDC. I have installed HUP Solar One Batteries for 20+ years and do not have any experience with the Iron Edison battery. My client went to Iron Edison & was told that 360 AHR at 24 VDC would cover the same AHR as a 760

Re: [RE-wrenches] Strategies for hurricane resistant solar arrays?

Here is are a couple bare bones suggestion...tweak as needed... I would avoid permanently closing in the back of the array in any way as it will increase heat build up and reduce efficiency. Have some pre cut materials, ready to go, stashed on the roof that could be attached in short time only w

Re: [RE-wrenches] Strategies for hurricane resistant solar arrays?

All our installations are in the Caribbean. The glass blow out (or suck out which is more likely) doesn't surprise me, that is the design limitation. It doesn't matter how tough the rail is if the modules blow out. Tilt installations are bad for hurricane zones. I keep out flat roof installations t