corn18
Village Idiot
- Joined
- Sep 9, 2021
- Messages
- 552
When I was doing my energy audit, I listed everything that could draw power in my RV. Makes sense. But the audit spits out a huge inverter size (>4kw). More than I think I need. Here's the issue when I list all 3 power hogs in the RV:
Microwave: 1325 watts for 15 minutes a day
Keurig: 1500W for 2 minutes a day (wow, those little things are hungry)
Coffee maker: 900W for 5 minutes a day (wife likes brewed coffee)
The audit sees that and assumes all three will need to run at the same time (3,725W). We will never use more than one of those at a time. So I put in 1500W for 30 minutes a day as a single input. That reduces the inverter required to 1972W once I have all my other stuff input. That seems more reasonable for how we use our RV.
We also have a 1200W inverter dedicated to the residential fridge. I left that out of the initial energy audit to get an idea of inverter sizing for everything but the fridge. I put the fridge back in to get an output for battery and solar size. I like that output. Says I need a bit more battery and solar capacity.
Microwave: 1325 watts for 15 minutes a day
Keurig: 1500W for 2 minutes a day (wow, those little things are hungry)
Coffee maker: 900W for 5 minutes a day (wife likes brewed coffee)
The audit sees that and assumes all three will need to run at the same time (3,725W). We will never use more than one of those at a time. So I put in 1500W for 30 minutes a day as a single input. That reduces the inverter required to 1972W once I have all my other stuff input. That seems more reasonable for how we use our RV.
We also have a 1200W inverter dedicated to the residential fridge. I left that out of the initial energy audit to get an idea of inverter sizing for everything but the fridge. I put the fridge back in to get an output for battery and solar size. I like that output. Says I need a bit more battery and solar capacity.