I have quite a large number of SELV halogen downlighters in kitchen (50 altogether) and other areas, mostly on individual transformers. I' avoid using dimmers to vary light levels so I use several different switch configurations and lamp wattages to achieve a range of lighting levels - thus: 1 circuit for 50W lamps over worktops; another for under cupboard 20W, another for glass front cabinets 20W, another for dining area 20W and so on.
It all works pretty well and I'm not unhappy with the result. But I was wondering if the power consumption of a single transformer (~0.3A on the primary side) varies with the lighting load on the secondary side. Can anybody enlighten me?
It all works pretty well and I'm not unhappy with the result. But I was wondering if the power consumption of a single transformer (~0.3A on the primary side) varies with the lighting load on the secondary side. Can anybody enlighten me?