I have a Jenn Air. I have a Jenn Air over the stove microwave oven JMV8000ADW.How do I compare 1

Question

I have a Jenn Air over the stove microwave oven JMV8000ADW.How do I compare 1 through 10 power of my oven (1450 wattage)when looking through microwave cookbooks of lesser wattage? How do I compare their numbers (1 through 10) to my (1 through 10)? What is the wattage of each power of my Jenn Air? Have a recipe that calls for 1000 watts...but don't know what power that is on my oven.