Re: [RE-wrenches] Enphase System Labeling

[Kent Osterberg]

Marv, The manual now clearly states that the ac and dc connectors have been evaluated and approved for use as the required ac load break disconnect.  Yet in other locations the manual still says "Never disconnect the DC wire connectors under load" and "The AC connector of the first microinverter in a branch circuit is suitable as a disconnecting means once the AC branch circuit breaker in the load center has been opened." Sorry, but that's just not a clear a set of instructions yet.  Can we open these connectors under load or are we never supposed to open them under load? Kent Osterberg Blue Mountain Solar Marv Dargatz wrote: Wrenches, Please note that Enphase has completed testing and received listing for the ac connectors and the DC connectors for use as the disconnect as required by the NEC.  No other disconnect device is required.  This information is contained in the latest Installation and Operations manual, available for download from http://www.enphaseenergy.com/support/downloads.cfm See ya! Marv 707 763-4784 x7016 Dana Orzel wrote: This is per our AHJ.   Thanks,   Dana Orzel Great Solar works, Inc. E - d...@solarwork.com V - 970.626.5253 F - 970.626.414 C - 970.209.4076   From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of benn kilburn Sent: Wednesday, May 19, 2010 3:21 PM To: Wrenches Subject: Re: [RE-wrenches] Enphase System Labeling   Thanks for sharing that Dana,   Are you required by code or the AHJ, for micro-inverter systems, to have an additional AC d/c aside from the branch circuit breaker? (on the roof or other location)   For these micro-inverter systems the only labeling required here, by code (CEC), is; 84-030 (1) which states...    “ A warning notice of an interconnected system shall be installed in a conspicuous place at the supply authority disconnecting means of Rule 84-022 and the supply authority meter location.”   84-022 is generally referring to the load center main breaker.  And the utility company puts their own "WARNING: interconnected system" label at the meter.   So we don't 'have to' provide any additional info, but i think that providing some is a good idea. As Ray pointed out, too much info can be discouraging.   For now, I have opted for these labels on the load center as the only labeling for the system; Code required -- "WARNING Two Power Source Parallel System" and; Optional for info -- "Grid-Connected Solar Electric System                                     Array Rating: 660 WDC                                 Module Rating (each): 220 WDC" ....the optional one will of course need to be replaced and updated if/when the owner decides to add to his system.   cheers, benn DayStar Renewable Energy Inc.  b...@daystarsolar.ca 780-906-7807  HAVE A SUNNY DAY     From: d...@solarwork.com To: re-wrenches@lists.re-wrenches.org Date: Mon, 17 May 2010 14:29:12 -0600 Subject: [RE-wrenches] Enphase System Labeling This was our last batch                 Labeling For Grid-tie Solar Electric System Great Solar Works, Inc., 970-626-5253                                                                   KNOPP SIGNS         Qty – 2, Color red   INTERACTIVE SYSTEM POINT OF INTERCONNECTION Enphase Micro-Inverters [1] per module [17] Total   PHOTOVOLTAIC SYSTEM SOURCE                     PV System Total Watts                                            3.910   KW                   Maximum AC Output Operating Current             13.6     Amps                   AC Operating Voltage                                              240      Volts                    For information and service contact: Great Solar Works, Inc., 970-626-5253   Qty – 1, Color red   PHOTOVOLTAIC SYSTEM SOURCE                     PV System Total Watts                                            3.910   KW                   Maximum AC Output Operating Current             13.6     Amps                   AC Operating Voltage                                              240      Volts                    For information and service contact: Great Solar Works, Inc., 970-626-5253   Qty – 1, Color red   PHOTOVOLTAIC AC SYSTEM UTILITY DISCONNECT WARNING - ELECTRIC SHOCK HAZARD - DONOT TOUCH TERMINALS. TERMINALS ON BOTH THE LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION. IF A GROUND FAULT IS INDICATED THE NORMALLY GROUNDED CONDUCTORS MAY BE ENERGIZED AND UNGROUNDED   For information and service contact: Great Solar Works, Inc., 970-626-5253   Qty -1, Color Yellow   PHOTOVOLTAIC SYSTEM CONNECTED THE AC PV DISCONNECT IS LOCATED Next to Meter on South Wall For information and service contact: Great Solar Works, Inc., 970-626-5253       Thanks,  Dana Orzel   Great Solar Works, Inc E - d...@solarwork.com V - 970.626.5253 F - 970.626.4140 C - 970.209.4076 web - www.solarwork.com Responsible Technologies for Responsible People since 1988"     30 days of prizes: Hotmail makes your day easier! 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