Maximum Demand Calculator !!better!! Access

To take control of this, you need a . What is Maximum Demand? Maximum Demand is the highest average load (usually measured over 15, 30, or 60-minute intervals) that a system draws during a billing period.

Grab your last 12 utility bills. Find the highest "Demand" value. Compare it to the sum of your connected load. You will likely find you are paying for capacity you rarely use. maximum demand calculator

[ MD = (Load_1 \times DF_1) + (Load_2 \times DF_2) + ... + (Load_n \times DF_n) ] To take control of this, you need a

Why average? A motor starting up might draw 600A for 2 seconds, but that doesn't melt the cables. The 15-minute average is what heats the transformer. Why does it matter? Utilities size their transformers for your MD. If you have a 5-minute spike once a month, you are paying for infrastructure you use 0.01% of the time. You cannot simply add up the nameplate ratings of all breakers. That is Connected Load , not Maximum Demand. Diversity saves you. Grab your last 12 utility bills

Apply the factors from the table above.

Convert to kVA (PF 0.90): ( 21.1 / 0.90 = ) The "Real" Calculator: Power Analyzer / Smart Meter Manual calculations are estimates. For accurate MD (and to verify your diversity assumptions), you need real data.