Maximum Demand Calculator
Calculate the maximum demand of electrical systems for residential, commercial, or industrial loads. Input connected load, diversity factor, and obtain peak current.
Maximum Demand Calculator:
Maximum demand is the highest amount of electrical power drawn by a system during a specific period. The Maximum Demand The calculator computes MD using connected load and diversity factor. It helps determine peak current, design transformers, and optimize electrical systems safely and efficiently.
Maximum Demand Tools formula
The Maximum Demand Calculator determines the peak power or current demand of an electrical system based on the connected
load, diversity factor, and supply voltage. Maximum demand represents the highest load drawn over a specific period,
which is crucial for sizing transformers, generators, and protective devices.
The formula used is:
\[ MD = \textrm{Connected Load} \times \textrm{Diversity Factor} \]
Where MD is maximum demand, and the diversity factor accounts for simultaneous usage of connected loads. This calculator helps engineers, electricians, and facility managers evaluate electrical load requirements, optimize system design, and ensure safety and efficiency. It can handle single-phase and three-phase systems, with inputs for voltage and load type.
By entering the connected load and diversity factor, the calculator instantly provides the maximum demand in kW or amperes, aiding in planning, energy management, and cost estimation for residential, commercial, and industrial applications.
Work & Installation — Input to Output Summary
Work:
- Calculates maximum demand for single-phase and three-phase systems.
- Uses connected load and diversity factor.
- Useful for load analysis, transformer sizing, and system planning.
Installation:
- Add HTML input fields for connected load, diversity factor, and supply voltage.
- Include JavaScript formula: MD = Connected Load × Diversity Factor
- For current: I = MD / V (or I = MD / (√3 × V) for three-phase)
- Display output in kW and amperes (A).
Input:
- Connected Load (kW or kVA)
- Diversity Factor (decimal)
- Supply Voltage (V)
- System Type: Single-phase / Three-phase
Output:
- Maximum Demand (MD, kW)
- Maximum Current (I, A)
Testing and Final Adjustments
Test with examples: residential load = 50 kW, diversity factor = 0.6 → MD = 30 kW. Verify single-phase and three-phase current calculations: three-phase, V = 400 V → I = 30,000 / (√3 × 400) ≈ 43.3 A. Validate decimal precision, unit conversions, and input handling for negative or zero values. Ensure real-time calculation updates. Optionally, add percentage of connected load for reference. Test responsiveness on desktop and mobile. Include tooltips or a reference for diversity factor values. Once tested, finalize UI, rounding, and layout for professional and educational applications. The tool ensures accurate estimation of peak electrical demand, aiding safe and cost-effective system design.
Frequently Asked Questions - Maximum Demand Calculator:
What is maximum demand?
Maximum demand is the highest power or current drawn by a system during a specific period.
How is maximum demand calculated?
MD = Connected Load × Diversity Factor, optionally divided by voltage for current.
What is diversity factor?
Diversity factor accounts for the probability that not all loads are used simultaneously.
What units are used for maximum demand?
Maximum demand can be expressed in kW, kVA, or amperes (A).
Can this calculator be used for single-phase systems?
Yes, enter supply voltage and connected load to compute MD and current.
Can it be used for three-phase systems?
Yes, using I = MD / (√3 × V) for current calculation.
Why is maximum demand important?
It helps in transformer sizing, generator selection, and energy management.
Can this be used for residential buildings?
Yes, it works for residential, commercial, and industrial systems.
What happens if the diversity factor is 1?
MD equals the total connected load with no reduction for simultaneous usage.
Can this calculator help reduce electricity costs?
Yes, by analyzing peak demand, you can optimize load scheduling and reduce costs.
