Physics

Check whether one PoE switch has enough watts, powered ports, and PoE type support for a lighting fixture schedule.

Turn an LED L70 or L80 hour rating into a group replacement date, fixture quantity, and remaining operating life.

Size an emergency-light battery or estimate runtime using itemized loads, minutes, battery voltage, and Ah, mAh, or Wh capacity.

Estimate parking garage LED and adaptive dimming savings, net costs, and simple payback using your fixture, schedule, rate, and quote data.

Estimate commercial sign LED retrofit electricity savings, kWh reduction, and simple payback from total sign power, operating hours, and bill rate.

Estimate grow light PPFD at a new height, find a height for a target PPFD, and check five canopy readings with DLI.

Calculate peak lighting cooling load in BTU/hr from total watts, fixture count, or floor area and lighting power density.

Calculate lighting power density, allowed watts, and watts remaining for Building Area or Space-by-Space allowance checks.

Compare annual spot replacement and group relamping costs, planned event cost, schedule interval, labor, cleaning, disposal, and service charges.

Calculate the safe number of 0-10V LED drivers from controller current capacity and control-wire voltage drop.