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Its not clear what you mean by "Powerwall". Specifically that is a Tesla product which combines a battery and inverter in one cabinet but there is nothing special about either the battery or inverter in that particular unit. Sometimes people will refer to other products using the same...

Max is short for Maximum, not sure what the ambiguity in that word would be. What "people" are saying you can go higher? You need to stop listening to them.

Your question is difficult to answer based on the stated goals and lack of AC specifics. How many sq ft need to be cooled and what is the heat load on the room, is the insulation adequate? How many tons is the AC unit. The best choice here would be a high eff. variable speed mini-split system...

Interesting tech, would love to have this at home making some extra Diesel fuel for the Dodge Cummins engine. BTW, Carbon Dioxide is NOT pollution. Its plant food as in without it we don't eat. Yes, some of the byproducts of combustion like Carbon Monoxide and Nitrogen Oxides or Sulfer from...

Well that's interesting. Unfortunately its just more "Smoke and Mirrors". Ultimately it means nothing. Before anyone accuses me of being a too negative, here are some facts that most people don't know, even Californians. This subject has already been discussed here on the forum under the heading...

You have to use a good hand held multimeter, measure the actual voltage on the batt + and - terminals. Then the accurate value can be manually entered in the BMS set up menu where the number of cells, batt capacity etc. are put in by the user.

150V is the PV input voltage and 30A is the Battery charging Output current at 12, 24 or 48V depending on your battery voltage. The Victron datasheets will list the maximum watts each charge controller model is capable of. Any brand of inverter will either derate itself or just shut down due to...

That is not how it works. A US breaker panel that is rated at 100, 125, 200, 225, 400A Etc is a per bus bar rating. So split phase has 2 bus bars and 3 phase has 3 bus bars. In both cases each bus bar is rated at the same value as stated on the panel. So a 100A split phase panel has a 2 pole...

I'm not seeing any prohibition in the wording at all. Its actually the opposite. That section is simply giving permission to attach a 120V source to a 120/240V panel but only if there are no 240V outlets or multi-branch circuits that share a neutral. In other words it gives permission to...

Same way they forced health insurance on all of us. Simply ignore the constitution and legal precedent. Wait a little while and discover there are no consequences. Rinse and repeat.

There is also going to be losses in the DCDC converter for any DC appliances that are not 48V as is the battery. Stick with 120V appliances, they are relatively inexpensive and available vs. specialty DC appliances.

Grounding is not difficult, the confusion is due to the word "ground" being used in several different contexts but no one ever qualifies it as they should. 1 System Ground 2 Equipment Ground 3 Earth Ground 4 Negative side of the battery and chassis of a vehicle being referred to as ground with...

It may be educational to watch a few videos of electric cars on fire. The intensity is truly stunning. A BMS is absolutely necessary especially with Li-NMC chemistry. Those are the cells that operate at 3.7V nominal. They are not as safe as LiFePO4 which operate at 3.2V nominal.

? A clarification that doesn't apply to your situation specifically. If more than 3 conductors are in a conduit then the ampacity has to be derated. In this case the Ground wire(s) is not counted.

If you are not using closed loop BMS communication different brands can be mixed if they are the same chemistry and number of cells.

You must be referring to operation "Blue Beam".

Yes, in the data center world its called a Maintenance Bypass so power can be diverted directly to the loads thus Bypassing and isolating the UPS systems for maintenance and service such that it is safe with no power inside the UPS cabinets at all.

I read through the Pro operating manual again, see attached relevant pages. I believe the following is where the confusion is. 1) Since you have a Xanbus connected MPPT charge controller the inverter is operating in the "Enhanced Grid Support Mode" which means the Grid Support Volts setting has...

That's some nice "Word Smithing". Definitely went out of their way to discourage Solar but without explicitly bashing it. You are correct, with rates at 8 cents per kWh there isn't much financial incentive. Unless the area you live in has frequent power outages then maybe from a convenience...

The diagram as posted makes no sense at all. The subpanel should be configured for critical loads which means the branch breakers for your fridge, computer, router and anything else you want on back up power has to be in the subpanel which is fed by the AC Output terminals on the Inverter. The...

Personally, I like the idea of actually using technical terms to describe things instead of arbitrary industry invented meaningless terms. 1) Constant Current 2) Constant Voltage 3) Float

Is it a 12V system? Its surprising how fast Amp hours add up with relatively small parasitic stand by loads. As an example lets assume the inverter has a 48W standby loss. That is 4A at 12V. In 24 hrs, 96Ah which is more than 1/2 of the usable battery capacity. Best way to find out is to...

Apologies, disregard everything I posted earlier. Totally missed that one of the batteries is only15 cells. By design the batteries have different operating voltage ranges so current will always flow accordingly from higher to lower potential.

Thanks for sharing, good reminder to leave the connectors loose until everything has been tested with a meter.

Based on your amperage requirements and large cable sizing, I would recommend going with Class K or M welding cable. Its sooo much more flexible and easier to work with. Keep in mind that the fine strands expand more when stripped so special crimp lugs with a slightly larger barrel are required...

Sounds like a great project. Looking forward to the story as it unfolds.

Bulk (Constant Current) = 0.2C Absorption (Constant Voltage) = 56V-56.8V Float = 53.6V to 54.4V. Float is only necessary when using solar generation to power loads in order to keep the charge controller active. If the system is mostly used as back-up then no-float is recommended.

Many furnace control boards have specifications regarding the maximum resistance between Neutral and Ground. Usually its a just a few ohms. The Goodman trouble shooting guides I have read go into some detail about the issue. As Mattb4 mentioned, it could be the infamous N-G issue that has...

The shunt is there to measure actual current supplied to the load and is sized at 120% of the normal continuous amperage the load will require. For example, a pair of 6000W inverters would draw approx. 290A at 50V if they were operating at 100% of capacity. A 500A smart shunt would be perfect...

Since the specification sheet for the inverter was not included in your post, this is a bit of a generic answer. Max AC output would typically refer to the maximum CONTINUOUS power output at a specified ambient temperature. Peak Power is generally a surge rating. For most low cost, high...