How Many Ovens Do I Need . The various standard phrases, to describe oven temperatures, include words such as cool to hot or very slow to fast. Up to a 4 pound chicken. How Many Small Kitchen Appliances Do You Need? The Simple Year from thesimpleyear.com What’s more, you should have at least 5mm (0.19 inches) space to the sides to allow things to ventilate properly. As for the burners on the electric stovetop, bigger burners. Up to a 4 pound chicken.