Calculators

Cost Saving Calculators

Our Lighting Cost Savings Calculator is a sophisticated tool that compares two different lighting types of your choosing to each other and tells you how much one saves over the other using 3 methods 1) cost per year, 2) payback period and 3) net present value analysis.  A detailed explanation and calculator spreadsheet with tabs containing 3 examples are provided, along with a blank worksheet for you to complete with your own project.  The blank tab and 3 example tabs will appear at the lower left of the calculator spreadsheet.

Voltage Drop and Wire Gauge Calculators

For 12 or 24 volt DC systems, we recommend using wire thick enough to maintain at least 11 or 22 volts, respectively, throughout the system. Below those potentials, you may see some dimming in single color systems, and you may see incorrect colors in RGB systems because the red, green and blue diodes do not dim at the same rate. If you use long LED linear lights, such as tape or linkable bars, you will have additional voltage drop within the lighting itself, so wire to additional points in the lighting line, if necessary.

For 12 volt AC landscaping systems, some high quality lighting will tolerate a much wider range of voltage. For example, Kichler landscape lights are generally designed to function properly on 9 to 15 VAC, which means you can use the 15 volt tap on the transformer and drop up to 6 volts on a long decrepit line, and still achieve success.

Calculate Wire Gauge
Material
Voltage (VDC or 1-phase AC)
Voltage Drop (%)
Current (amps)
Length (feet)
Result: Gauge (AWG) 8
Calculate Voltage Drop
Material
Gauge (AWG)
Voltage (VDC or 1-phase AC)
Current (amps)
Length (feet)
Result: Drop (VDC) 10.3
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