I'm looking to buy a new inverter and trying to decide between the Flexboss18 and 18kpv models. The main difference seems to be the grid connection capacities at 90A versus 200A, along with the manual and automatic transfer switch options. Here's where I'm confused: if my hybrid inverter knows not to export power to the grid when there's no grid during a power outage, why would not having a manual transfer switch be a safety concern? Just to clarify, all my household loads run from a critical loads panel which is exclusively connected to the inverter, with no connection to the main service panel. Any insights? Thanks!
2 Answers
Great question! The manual transfer switch is useful for a few reasons. If your inverter has any issues or needs firmware updates, a transfer box lets you safely isolate it for those repairs. While there is an added cost, having that option gives you peace of mind that you can handle any failures without risking related issues. It’s true that eventually, electronics can fail, and being prepared for that is a solid plan!
I totally get your confusion! One major reason for the manual switch is safety. Fire departments and power companies prefer knowing that the inverter is completely disconnected from the grid, rather than relying on the inverter's electronics. Plus, if you need to do work on the unit, you can lock it out to ensure no one accidentally powers it up while you're working on it – trust me, that's a lifesaver!
That makes sense! I have a breaker for my inverter too, can’t that do the same thing?