Tump, All I know is that AFCIs work off of the radio frequency signatures of arcs. If your inverter has a lot of high frequency noise, typical in off-grid inverters, it may be seeing this noise and thinking it is an arc. Marv Dargatz, may have something to add on this. Also, relays in your charge controllers might also be interpreted as an arc. These are challenges that have to be addressed for equipment to meet the requirements of the 2011 NEC that will require series arc detection on all systems with a maximum system voltage over 80 volts, which would include all 48-Volt dc off-grid systems.
Bill. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, May 31, 2010 4:32 AM To: RE-wrenches Subject: [RE-wrenches] Arc fault questions. Can & will someone explain, why off grid inverters will cause nuisance tripping of the AF receptacle. Does anyone have "real" field information as to how this might be reduced or eliminated? How about which AF receptacles are less likely to trip? TIA tump Sent via BlackBerry by AT&T _______________________________________________ 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 _______________________________________________ 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
