Quiet inverter?

One of the reasons inverters whine so much, is that they are operating outside their normal operating parameters. My two inverters are virtually silent, no fan running due to the fact I have a Large rated inverter for the use I am expecting from it. When I put a large drain on it (microwave or A/C), that is when the fan kicks in. So, maybe you need to rethink the size you are anticipating to use? Also, are you operating the inverter within the designed distance from your power source? (Battery bank) Most small inverters are just plugged into a DC outlet (cigarette lighter), which already steps down your amperage. Installing a larger inverter (1000w) within 3 feet of your battery bank with a larger Awg cable attaching it to the bank would be the way to go. I would then install a custom outlet somewhere in your camper that is convenient to your use. Then wire a heavy gauge (12g) extension cord from the outlet (female end cut off and hard wired to the outlet), leaving the male end on the cord and run it out of your camper to where your inverter is installed and plug it into the invertor. That way you could install your inverter, out in the wheel well area of your camper and minimizing any auxiliary noise. Personally, I just go to Lowes, buy a specific length of 8 awg and purchase a male plug and make up my own cord. Spend the extra money on a larger inverter and 2/0 welding cables to attach it directly (with catastrophic fuse) to you battery bank. You know how to get ahold me if you need more details.

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