National Electric MFG
Methodology
The calculators use simplified electrical, psychrometric and airflow formulae, with amber/red warnings where assumptions are tight or site conditions matter.
The aim is to make the next site conversation clearer: what load is being added, what supply is available, what cable or RCD limit matters, and what needs checking before equipment is selected.
Always verify against manufacturer data, BS 7671, site conditions and inspection/test results before using an output on a live job.