Newbie Off-Grid Solar questions

First off, Im a newbie and still researching and learning.  My intent is to learn as much as I can, but also probably hire someone to do my installation work. I think I have a fair sense of when it is time to hire a professional, but I like to know enough to make sure I get the right support.

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So, I want to build a small off-grid solar system for my shop.  The shop currently has a 200 AMP service coming from the main house.  Intent when installed was to use that shop 200 AMP to feed things like my RV and eventually another shop.

I want to have a 240 Volt system, as my well pump is connected to the shop, and I also have a 240 Volt air compressor that will eventually be installed.  I've been looking at 120/240 V inverters.  I was thinking maybe something along this line

I plan on starting out small and maybe expanding over time.  Start off with maybe this inverter, 10x280W panels (used) and a couple of 100AH batteries. 

Doing the research I have thus far, I understand that neutral/ground bonding is required at the first entry point, which is great if I connect to the house.  Since my house has the first entry point, and I plan on having a disconnect at the panel in my shop, when the shop is disconnected from the grid (via either disconnect switch or throwing the main breaker feeding the shop), do I need to make sure the inverter feeding the shop has neutral/ground bond? Im assuming yes, since the inverter is now the first point of entry for the shop.

The way the grid connection is wired currently is I have 400 AMP service to the meter on side of house.  I have 200 amp feed off that for the main house, and another 200 AMP feed to the shop. The main breaker for the shop feed is at the house (on outside wall, next to meter).  I had originally planned on just throwing that breaker to disconnect the shop, but Im thinking a disconnect is the proper way.

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Also, is it acceptable to ground the inverter to the shop's panel grounding bus?  Im assuming that the ground from the house to the shop via the existing connection is still present even if disconnected via disconnect switch or breaker thrown?

Hope this makes sense and appreciate insight and learning opportunity.

Thanks

Mike

System voltages (Battery) run 12,24,48, Then 72V and up fall under different rules from equipment and safety etc.
12V/100AH provides 1.2kilo Watt hours or Watt Hours
24V/100AH provides 2.56kWh / Wh.
48V/100AH provides 5.12kWh / Wh.

Recommended Maximum Draw off battery should not exceed 250A
12V@250A = W = 120V @ 25A
24V@250A = W = 120V@50A or 240V@25A
48V@250A = 12,000W = 120V@100A or 240V@50A
* Not Corrected for inneficiencies.

A Bog Standard North American Home has 240VAC/200A Main Service Panel, some have smaller Main Service and others have larger.
This would require 4x 48V/W Inverters paralleled to deliver 240VAC/200A.

Take a look at your current Power Bill. Look at the Daily Average in kWh and do keep in mind that it varies over the year, Mid July & December tend to be heaviest load months so you NEED to look at the Heaviest Months to know what to plan for and to size the battery bank to support that amount of energy.

Without knowing what your "actual" energy usage is, it's not possible to size a battery to support that nor to determine what equipment needs to be in place to deliver it.

Also realize, that Conservation is FAR Cheaper than Generation & Storage. It's time to get rid of the Fridge inherited from Granny that only keeps the beer sold in the garage ! Old Appliances like Hot Water Tanks and such are a massive energy drain (who leaves a car idling in the driveay 7/24 because they may want to go for a 10 minute ride ? ) which is what a Hot Water tank essentially does, 15 minutes of every hours it's warming the water... Just in case. Cutting Consumption and updating goes hand in hand.

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