Solar Calculator for AC

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Is there a good app or a special calculator for figuring AC calculations.
Example:70 KW system at 208 volts
I would like to go to sites and not have to add everything by memory
Thank You in advance
 

GoldDigger

Moderator
Staff member
Location
Placerville, CA, USA
Occupation
Retired PV System Designer
Is there a good app or a special calculator for figuring AC calculations.
Example:70 KW system at 208 volts
I would like to go to sites and not have to add everything by memory
Thank You in advance
If what you do not want to have to remember is the formula itself, how about just writing your own spreadsheet with the right cells for inputs and use a spreadsheet app?

It is not all just adding. There is multiplication and division involved too. :)
 

Carultch

Senior Member
Location
Massachusetts
Is there a good app or a special calculator for figuring AC calculations.
Example:70 KW system at 208 volts
I would like to go to sites and not have to add everything by memory
Thank You in advance


Split Phase: Amps = Power / (Volts phase-to-neutral) / 2, assuming unity power factor.
Three Phase: Amps = Power / (Volts phase-to-neutral) / 3, assuming unity power factor.

In any case, make sure you check the datasheet, as the nominal power ratings can sometimes not match what you expect them to be.
 

jaggedben

Senior Member
Location
Northern California
Occupation
Solar and Energy Storage Installer
Split Phase: Amps = Power / (Volts phase-to-neutral) / 2, assuming unity power factor.
Three Phase: Amps = Power / (Volts phase-to-neutral) / 3, assuming unity power factor.

In any case, make sure you check the datasheet, as the nominal power ratings can sometimes not match what you expect them to be.

I would have said:

Split Phase: Amps = power/(volts line-line)
Three Phase: Amps = power/(volts line-line)/1.73

Same answer though. :)
 
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