Abstract: . . .  5045 4036 3363 2883 2522 2242 2018 1614 1345 1153 1009 897 807 673 577 504 448 404 367 336 310 288 269 252 237 224 212 202 33962 16981 11321 8491 6792 5660 4852 4245 3774 3396 2717 2264 1941 1698 1509 1358 1132 970 849 755 679 617 566 522 485 453 425 400 377 357 340 June 2001 Page 38 PV Installation Guide TABLE A-9 MAXIMUM ONE-WAY WIRE DISTANCE (FT) 3% VOLTAGE DROP--240-VOLT CIRCUITS-COPPER AMERICAN WIRE GAUGE (AWG) WIRE SIZE 14 12 10 8 6 4 3 2 1 1/0 2/0 3/0 4/0 300MCM 500MCM AMPS 2 4 6 8 10 12 14 16 18 20 25 30 35 40 45 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 WATTS 480 960 1440 . . .
. . .  Conditioning Unit #10-2 conductor TC with THWN-2 conductors for all PV array wiring PV Circuit Combiner POS Disconnect and GroundFault Protection 60 A DC+ 1A 15 A, 5 plcs. Continuous Equipment Ground + + + + + - - - - + + + + + -- -- -- -- -+ + + + + -- -- -- -- -+ + + + + -- -- -- -- -- DC/AC Inverter Photovoltaic Modules DCSurge Arrestor 20 A NEG AC In Inverter AC Disconnect - - - - Existing Exterior Main Breaker Box 20 A Exterior PG&E Disconnect Box 30 A PV Array Grounding Conductor 3/4” EMT Conduit w/ #10 AWG THWN conductors Surge Arrestor Main House Grounding System Notes: 1. NEC Array Open Circuit . . .
. . .  see if the performance of the system is close to the previous year's reading. Maintain a log of these readings so you can identify if the system performance is staying consistent, or declining too rapidly, signifying a system problem. June 2001 Page 19 PV Installation Guide SECTION 4: SOLAR ELECTRIC (PV) SYSTEM INSTALLATION CHECKLIST Following the completion of each item on the checklist below, check the box to the left of the item and insert the date and initials of the person completing the item whether that is the installing contractor or owner-installer. Remember to follow the proper safety . . .
. . .  Voltage = 95 Volts dc. 2. Max. Short Circuit Array Current = 45 Amps. 3. PV modules are Astropower model # AP100, UL-1703 Listed. Array consists of 20 modules – 5 parallel sets of 4 units in series. 4. 48-Volt DC, 240-Volt AC inverter, UL1741 listed. COMPANY NAME Title: Electrical Drawing, Grid-Tied PV System Date: Related Drawings: EX-4 Drawn By: Checked By: Scale: N/A Material: DWG NO. EX-5 June 2001 Page 30 PV Installation Guide TABLE A-1 WIRE SIZING TABLE FOR AMPACITY AND VOLTAGE DROP Wire Size (AWG) 14 12 10 8 6 4 3 2 1 1/0 2/0 3/0 4/0 300MCM 500MCM D Factor Ampacity of 90 C Wet Wire Roof Mounted . . .
. . .  240-amps of supply (200-amps x 1.2= 240-amps) so if the PV breaker is rated at 60-amps, the main breaker can be up to 180 amps (240 amps – 60 amps = 180 amps) 9. If system includes a critical load subpanel (battery standby system), determine which circuits are critical. These circuits must be adequately designed to handle the anticipated electrical loads. The standby portion of the system is considered by the NEC to be an Optional Standby System covered by Article 702. a. Warning: Multi-wire branch circuits in a home must be closely evaluated to allow them to be wired to a 120VAC optional standby system. . . .
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