Recent content by wmgeorge

Well here is a link to a MSD sheet, no fire hazard listed? https://dakotalithium.com/wp-content/uploads/2019/01/LiFePO4-Safety-Data-Sheet-Lithium-Iron-Phosphate-Batteries.pdf Waffle guy, So you found ONE fire hazard?? Wow!! Waffle guy... still acting like a child... Insults again. Nothing...

Then you can quote me the number of LiFePO4 fires nationwide because I could find zero after searching for an hour? The NEC is written by and for fire prevention (and electrical safety) IF LFP were prone to fires and needed fusing for each it Will be in the Code. Its Not, if you are a true...

Yes, Are you? Besides posting over 4600 times in less than one year, what is are your qualifications? You had a field day making fun of and insulting me . :(.

Well I can find Nothing in the current 2020 NEC about fusing individual batteries. Regardless of being posted on Here or not. If its not in this edition of the Code then its not required nor needed. IF it was a common danger then the Code would have it listed. Please list the fires that have...

Well I am 79 years old and been in electrical since 1962 first licensed in 1970 and retired as a Master specializing in controls in 2007 after teaching for 12 years. Not seen references to what your talking about here? And Who are you besides being a Waffle maker?

More likely that you need an actual fuse for each battery. if you don't have a fuse for each battery, you run the risk of one battery feeding into another at high current, e.g., battery 1 has a cell failure, and it's voltage drops. The parallel battery 2 will dump current into it. What are the...

Why would you fuse each battery? My string is fused before the inverter and on the line feeding from the charge controller.

Expect to pay $600 - $1500 plus for a good low freq 3000 watt inverter. The 12 volt supply voltage is a draw back on larger inverters 3000 watts would be about 250 amps not including all the losses.

On 12 volts is way over kill, I only have a low freq 2000 watt on mine and going to a 3000 watt would really be pushing the limits on ampere draw from the batteries. I only have 3 100 aH LFP batteries and perhaps adding a 4th but not now. If you never plan on using more than 2000-3000 watts...

I need to look for one like that and you got a good deal. There is really no reason why I can not feed 120 volts into it and get out 240 volts out for my Mitsubishi mini split Heat Pump.

I also have the same panels.... 3S2P works fine on the 40 amp MPPT controller. I have 3 100 aH batteries on a low freq 2000 watt Invertor.

UPS Freight is delivering my 55 pound 3KVA unit today. Not by truck Freight I hope but via regular UPS, correct? The H and X terminals marking are SOP for those transformers.

I don't understand how a 300 watt AC unit on 120 volts is going to draw 30 amps if it does the system is not large enough. With that load on, (23-24 amps, 12.8 vdc) even in the daytime with 5 or 6 hours of good charging amps its not enough to power that load and charge the LiFePO4 battery to...

Try asking the folks who had the solar installed?

Hmm what If the panels are fused?