Ron thanks for the electrical education. It makes sense now.

My uppers for the long piece are 36" + 16" BUT the cabinets are flat at the bottom for lack of a better word. My valence is a separate piece at the front screwed into the cabinets underneath.

Both pictures below show my setup but the backsplash, valence and microwave are in. The pieces hanging out was my old under cabinet lighting which you can see was only 18" relative to the 30" wide cabinet above. The other under cabinet light is hidden behind the wall in the 2nd picture.

You might consider the GE Enbrighten 24 in. LED Direct Wire Under Cabinet Light. You could put one light each under the 30" cabinets and link two lights under the 52" cabinet. You might want to control the lamps with an LED-compatible dimmer switch.

Thanks for the option however it looks like this product is only available in Home Depot in the US. We up here are jealous of all the product choices available in the US.

Home Depot - Canada:

• Illume Color-temperature-selectable 24-inch LED White Under Cabinet Light
• 30-inch LED White Under Cabinet Light
• 18-inch LED White Under Cabinet Light

Yes we looked at this option but we are looking for that 2700k color temperature and these lights start at 3000k.

I wouldn't go 2700K in a kitchen. I tried 2700K recessed lights in my kitchen (with white walls) and it looked terrible. Switched to 3500K and it looked much better.