In electrical design, a is used to estimate the largest current likely to be carried by an installation. Rather than simply summing all connected loads, these tables apply diversity factors (or "demand factors") to account for the fact that not all devices operate at full capacity simultaneously.
| Row | Circuit Description | Connected Load (W / A) | Diversity / Assessment Factor | Assessed Demand (W / A) | | :--- | :--- | :--- | :--- | :--- | | 1 | Lighting | | | | | 2 | Socket Outlets | | | | | 3 | Fixed Appliances | | | | | 4 | HVAC | | | | | 5 | Motors | | | | | 6 | | | | SUM | | 7 | Voltage (V) | | | _____ V | | 8 | Final Max Demand (Amps) | | | Row 6 ÷ Row 7 | | 9 | Safety Factor / Future Load | | | +25% (typical) | | 10 | Final Required Rating | | | Row 8 + Row 9 |