Choosing 2x multiplus 24/3000 or 1x multiplus 24/5000

DIY
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1

Goodday,

I have a question what would be the beter option.
I have a boat with a 32A shorepower connection.
I want to install a multiplus 24V setup with more then 3000va capacity, i think my options are to install 2x 3000va or 1x 5000va but i am not sure what would work beter. I would need a big batterybank for long off-gritt power

Please let me know what the pro/cons are of the two options. Thanks!

2

Think redundant

3

There are pros and cons to both methods. Slightly higher peak output with the parallel units, and redundancy if one unit fails you can quickly reconfigure the good unit to stand alone. However a single unit will have a lower minimum shore power input level available than 2 units in parallel, as well as lower standby current consumption.

4

Better less then none

5

A single 5000VA can go up to 50A and a 3000 up to 32A so that means a single unit can have a higher input, or do i understand you wrong?

6

I don’t understand the question ?

If you have one 5000 and it fails…you have nothing.

With 2 3000 units you have 6000va to begin with, if one fails you still have 3000 left.

Enough to make coffee

7

6000A if you are really great at parrallel set ups but as a beginner it will not be 2x3000.
A 5kva is much easier to install.
(Battery bank size is so similar that would not really have a bearing on either choice)

8

Yeah, taking 2 3000’s will probably cost another 2 hours…

On a ship/boat i love redundancy.

9

This might be a pro if you can do it:
If you have two multiplus inverters, you can support an AC input (on some models). Inverter A can support the 120VAC shore power and Inverter B can support the generator’s 120VAC. Then, you may not need a Automatic Transfer Switch. Is this doable?

Thoughts?

10

Not what the to wanted

11

Thanks for the comments! I would be able to install 2 inverters correctly in parralel and redundancy is nice but that is another subject, i am mostly interrested to know if one setup would work smooter then the other.

For example if one setup can handle inverting DC to AC better or if the power can combine AC and DC together to a higher power output.

12

Well, compare it to a motorycle

Two cylinders run smoother then one.