Greg H
Member
- Location
- Durham, NC, USA
- Occupation
- Electrician
Hey, does anyone have any thoughts about potential safety concerns when it comes to where to locate inverters within a house? For a typical residential PV system, you're potentially running at several hundred volts. I have some prior experience as a PV installer, but right now, I mostly work as a commercial electrician. In every commercial facility I have worked in any kind of panel or equipment running higher than 120/208 is usually in an isolated, out of the way location and more often than not is behind a lockable door. From what I understand the NEC doesn't really say much about where one can or cannot put an inverter in a residential installation. If you have a house where the service panel is in, say a living room or kitchen, is this a potential safety concern and what are the possible ways to mitigate any risks, especially if cost is a concern for the customer? I feel like if you picked an inverter whose terminals and/or switches were not too easy to access and made sure any external DC disconnects were mounted too high for any kids to reach or put a small lock on them then you should be alright. Unless you're dealing with a completely massive house, your modules are current limited to around 50 or 60 amps at the high end, so you don't need to worry too much about arc flashes and everything is supposed to be run in metal up until your inverter disconnect, so it doesn't seem exceptionally dangerous to me to put an inverter in a frequently occupied area; but what do y'all think?