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4609 W El Don Pl - Plan
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4609 W El Don Pl - Plan
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Last modified
5/30/2025 4:53:33 PM
Creation date
5/30/2025 8:00:59 AM
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Plan
Permit Number
20177153
101111434
101112251
Full Address
4609 W El Don Pl
4609 1/2 W El Don Pl
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101111434 - Permit
(Permit - Plan)
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\Building\Permits\E\El Don Pl\4609 W El Don Pl
101112251 - Permit
(Permit - Plan)
Path:
\Building\Permits\E\El Don Pl\4609 1/2 W El Don Pl
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Conductor, Conduit, and OCPD Sizing Validation <br />1. Maximum System DC Voltage Test <br />1.1. Enphase inverter w/6 Ureco FAM440E8G-BB (440W)s <br />Array Properties <br />Array Type Microinverter Array <br />System Description Enphase inverter w/6 Ureco <br />FAM440E8G-BB (440W)s <br />Module FAM440E8G-BB (440W) <br />Highest number of modules in series <br />in a PV Source Circuit <br />1 <br />Design Low Temp.3.3°C <br />Module voc 49.6V <br />Temp. Coefficient voc -0.134V/C <br />CEC Code Calculations <br />A. Maximum Voltage of PV Source Circuit 52.51V <br />see 690.7(A) <br />CEC 690.7(A) requires that if the PV module manufacturer provides a <br />temperature coefficient of open-circuit voltage, it must be used to <br />calculate the PV array's maximum system voltage. It includes an <br />information note recommending the use of the ASHRAE 'Extreme Annual <br />Mean Minimum Design Dry Bulb Temperature' as the design low <br />temperature. Using these values, the module Voc (49.6V) will increase to <br />52.51V at the design low temperature ( 3.3°C). <br />(3.3°C - 25°C) X -0.134V/C + 49.6V = 52.51V <br />The module Voc at the design low temperature is 52.51V. <br />52.51V X 1 = 52.51V <br />CEC Code Validation Tests <br />1. PV Source Circuit maximum Voc must not exceed <br />600V <br />52.51V < 600V = true <br />PASS <br />2. Wire, Conduit, and OCPD Code Compliance Validation <br />2.1. #1: AC Branch Output: Transition Box to AC Disconnect <br />Circuit Section Properties <br />Conductor 12 AWG THWN-2, Copper <br />Equipment Ground Conductor (EGC) 12 AWG THWN-2, Copper <br />OCPD(s) 10A <br />Raceway/Cable 0.5" dia. EMT <br />Lowest Terminal Temperature <br />Rating <br />75°C <br />Maximum Wire Temperature 52°C <br />Power Source Description Branch of 6 IQ8PLUS-72-2-US <br />microinverters <br />Power Source Current 7.26A <br />Voltage 240V <br />CEC Code Calculations <br />A. Continuous Current 7.26A <br />see Article 100 <br />Equipment maximum rated output current is 6 X 1.21A = 7.26A <br />B. Ampacity of Conductor 30A <br />see Table 310.15(B)(16) <br />Ampacity (30°C) for a copper conductor with 90°C insulation in <br />conduit/cable is 30A. <br />C. Derated Ampacity of Conductor 23A <br />see Table 310.15(B)(3)(c), Table 310.15(B)(3)(a), and Article 100 <br />The temperature factor for 90°C insulation at 52°C is 0.76. <br />The fill factor for a conduit/cable that has 2 wires is 1. <br />The ampacity derated for Conditions of Use is the product of the <br />conductor ampacity (30A) multiplied by the temperature factor (0.76) and <br />by the fill factor (1). <br />30A X 0.76 X 1 = 22.8A rounded to 23A <br />D. Max Current for Terminal Temp. Rating 25A <br />see 110.14(C) <br />The lowest temperature rating for this conductor at any termination is <br />75°C. <br />Using the method specified in 110.14(C), the maximum current permitted <br />to ensure that the device terminal temperature does not exceed its 75°C <br />rating would be the amount referenced in the 75°C column in Table <br />310.15(B)(16), which is 25A. <br />E. Minimum Allowed OCPD Rating 9A <br />see 240.4 <br />CEC 690.9(B) requires that the OCPD be rated for no less than 1.25 <br />times the Continuous Current of the circuit. <br />7.26A X 1.25 = 9.07A rounded down to 9A <br />F. Maximum Allowed OCPD Rating 20A <br />see 240.4(D) <br />CEC 240.4(D) requires that OCPD rating not exceed 20A when <br />protecting a Copper 12 AWG conductor. <br />G. Minimum Required EGC Size 14 AWG <br />see Table 250.122 <br />The smallest EGC size allowed is 14 AWG for OCPD rating 10A <br />according to Table 250.122. <br />H. Minimum Recommended Conduit Size 0.5" dia. <br />see 300.17 <br />The total area of all conductors is 0.0765in². With a maximum fill rate of <br />0.4, the recommended conduit diameter is 0.5. <br />Qty Description Size Type Area Total Area <br />2 Conductor 12 AWG THWN-2 0.0133in² 0.0266in² <br />1 Neutral 8 AWG THWN-2 0.0366in² 0.0366in² <br />1 Equipment Ground 12 AWG THWN-2 0.0133in² 0.0133in² <br />4 0.0765in² <br />0.0765in² / 0.4 = 0.1913in² (Corresponding to a diameter of 0.5") <br />CEC Code Validation Tests <br />1.OCPD rating must be at least 125% of Continuous <br />Current (240.4) <br />10 >= 7.26A X 1.25 = true <br />PASS <br />2.Derated ampacity must exceed OCPD rating, or <br />rating of next smaller OCPD (240.4) <br />23A >= 10A (OCPD Rating) = true <br />PASS <br />3.OCPD rating must not exceed max OCPD rating <br />for conductor (240.4) <br />10 (OCPD Rating) <= 20A = true <br />PASS <br />4.Derated Ampacity must be greater than or equal to <br />the Continuous Current (Article 100) <br />23A >= 7.26A = true <br />PASS <br />5.Conductor Ampacity must be at least 125% of <br />Continuous Current (215.2(A)(1)) <br />30A > 7.26A x 1.25 = true <br />PASS <br />6.Max current for terminal must be at least 125% of <br />the Continuous Current. (110.14(C)) <br />25A >= 7.26A X 1.25 = true <br />PASS <br />7.EGC must meet code requirements for minimum <br />size (Table 250.122) <br />12 AWG >= 14 AWG = true <br />PASS <br />8. Conduit must meet code recommendation for <br />minimum size (300.17) <br />0.5in. >= 0.5in. = true <br />PASS <br />4609 W El Don Pl - <br />10111143409/21/22
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