Wrenches, My memory is telling me that grid connected inverters should have both the DC disconnect and AC disconnects close (within site). This may be from a "best practice" standpoint and not a code issue. The case in point now is an older Fronius IG (not IG plus). It has DC and AC breakers in the inverter but I don't believe that they meet the need for a maintenance disconnect for servicing, or removing, the inverter.
Article 690 Part III Disconnecting Means 690.14 Additional Provisions. (D)Utility-Interactive Inverters located in Not-Readily-Accessible Locations. 690.14(D)(1)&(2) States the disconnecting means should be located within site of the inverter. Does this just pertain to Not-Readily-Accessible invertes? My question is. Is there any other code provision that mandates disconnects within sight of the inveter? I'm thinking back to an installation we did a few years ago, before SMA had the DC disconnect switch in the detachable enclosure for their Sunny Boys. I had a roof mounted PV array on the garage roof with a 600VDC disconnect in the garage and then another 40 feet of conduit (metal lined flex) traveling into the homes basement where the SB3800 inverter lived. I installed another 600VDC disconnect next to the inverter. Is this second DC disconnect mandated by code? Or is it just a good practice? David Palumbo _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
