1. I-lumen ephezulu, ukukhanya okuphezulu.
2. Gcina iinkonzo zobomi obude obungephi
3. Ukusetyenziswa kwamandla aphantsi, amandla aphezulu, ukunciphisa i-lumen ephantsi.
4. Uyilo lweradiyetha olulungiselelwe ukuqinisekisa inkqubo yokupholisa egqwesileyo.
5. Ufakelo olulula, ukonga amandla amakhulu, kunokutshintsha ngokuthe ngqo isibane se-incandescent / isibane se-halogen