Square D 100 amp panel
I have a 100 amp service with a Square D panel and load center. The label on the interior panel states: QON 16M E series. 2 questions:
First, can anyone tell me if this load center accepts tandem breakers?
Second, I've attached an image. I assume this gap between breakers is here for a reason. Can anyone tell me why?
Some background: Home is 850 sq ft, 1 bedroom. Hot water is oil fired. I wanted to know that, if I absolutely had to, I could add a circuit to the electric panel for electric hot water. The panel is full with the following circuits:
30 amp-dryer, 40 amp-oven, 2 15 amps-furnace & hot water, 20 amp-washer, 6 15 amps for lights & recepticles.
If I can't use tandem breakers, would a small sub-panel be the way to go, or would the addition of a circuit for hot water be too much for this 100 amp service?