Calculators

The energy and solar industry are filled with small and useful calculations that are used frequently to size components and determine performance. This page is updated regularly based on the content posted in our Pro-Tips Blog to create a collection of those calculators for your reference.

Voltage Calculations

Convert 3⌀ Line-to-Line Voltage to Line-to-Neutral

Voltage Line-to-Line (LL)	Math	Voltage Line-to-Neutral (LN)
	/ sqrt(3) =

Convert 3⌀ Line-to-Neutral Voltage to Line-to-Line

Voltage Line-to-Neutral (LN)	Math	Voltage Line-to-Line (LL)
	* sqrt(3) =

Amperage Calculations

Maximum Amps Per 1⌀ for 3⌀ System Capacity

Capacity (kW)	Math	Voltage LN	Math	Amps / ⌀
	* 1000 /		/ 3 =

Maximum Capacity Per 1⌀ Amps for 3⌀ System

Amps / ⌀	Math	Voltage LN	Math	Capacity (kW)
	* 3 *		/ 1000 =

Performance Calculations

Expected Power for Irradiance

AC Capacity (kW_ac)	Math	Irradiance (w/m²)	Math	Expected Power (kW)
	* (		/ 1000 ) =

Expected Power for Irradiance (Temperature Corrected)

Math	Cell Temp (°C)	Math	Tk(P_max)%	Math	Temp Correction
(		- 25 ) *		% =

AC Capacity (kW_ac)	Math	Irradiance (w/m²)	Math	Expected Power (kW)
	* ( 1 + -3.2%) * (		/ 1000 ) =

Energy/Insolation Ratio

Energy (Wh)	Math	Insolation (wh/m²)	Math	Energy/Insolation Ratio
	/		=

Performance Ratio

Energy (Wh)	Math	Insolation (wh/m²)	Math	DC Capacity (kW_dc)	Math	PR
	/ (		*		) =

Performance Ratio (Temperature Corrected)

Math	Cell Temp (°C)	Math	Tk(P_max)%	Math	Temp Correction
(		- 25 ) *		% =

Energy (Wh)	Math	Insolation (wh/m²)	Math	DC Capacity (kW_dc)	Math	PR
	/ (		*		* ( 1 + -3.2% ) ) =