Portable space heaters are small, electric resistance heating units. Regardless of the shape, size or type of electric heating element found in an electric space heater, virtually all power drawn is converted into heat. The cost of operating an electric heater depends on how much heat the unit is delivering.ortable space heaters are small, electric resistance heating units. Regardless of the shape, size or type of electric heating element found in an electric space heater, virtually all power drawn is converted into heat. The cost of operating an electric heater depends on how much heat the unit is delivering.
Flexible electronics, also known as flex circuits, is a technology for assembling electronic circuits by mounting electronic devices on flexible plastic substrates, such as polyimide, PEEK or transparent conductive polyester film.
As far as twins (or skinnys, or half size) breakers this has ONLY to do with what the panel will accept. If the panel is a 20/24 then it is a 20 space, 24 circuit panel. It can hold 16 full size breakers and 4 twins breakers for a total of 24 circuits. Many 100 amp panels are simply 20 circuits.