LED Driver Headroom Planning Table
Planning table for comparing LED load, driver capacity and headroom assumptions without giving wiring or installation advice.
Table PDFLED Driver Headroom Planning Table
Download the table with the page URL and retrieval date for offline lighting checks.
| Planning item | What to calculate | Why it matters | Boundary |
|---|---|---|---|
| Strip or fitting load | Length x W/m, or fitting count x input watts, for the same driver group. | Headroom starts from the actual connected lighting load being grouped. | Do not combine unrelated zones just to fit a driver rating. |
| Nominal headroom | Load x 1.20 where a 20% planning allowance is being used. | Spare capacity helps keep the estimate away from a fully loaded driver. | Headroom is not a cure for voltage drop, heat, incompatibility or poor layout. |
| Driver output type | Constant-voltage or constant-current basis, with output voltage or current noted. | The load estimate is meaningful only when the driver type matches the light source. | This table does not select driver equipment or define electrical installation. |
| Control compatibility note | Dimming method, control range and any stated compatibility limitation. | A driver that carries the load may still fail the intended control behaviour. | Compatibility must come from project and equipment notes, not this table. |
| Grouping note | Which run, shelf, cove, sign, room zone or lighting group is assigned to the driver. | A clear grouping note prevents hidden extra load in later energy or service notes. | This is a planning table, not a wiring diagram. |
| Review trigger | Long runs, high load, outdoor exposure, heat, voltage-drop concern or mixed equipment. | These conditions can change the acceptable design path before installation. | Wiring, regulatory and installation decisions remain outside this planning table. |