Detailed AC system design - Revision history

Alex: Text replacement - "[[Series and parallel" to "[[Series and parallel connections"

2021-03-02T10:08:07Z

Text replacement - "[[Series and parallel" to "[[Series and parallel connections"

Alex: Text replacement - "Allowable wire ampacity table" to "Conductor ampacity table"

2021-02-12T20:18:43Z

Text replacement - "Allowable wire ampacity table" to "Conductor ampacity table"

Alex at 17:20, 4 February 2021

2021-02-04T17:20:16Z

Alex at 17:19, 4 February 2021

2021-02-04T17:19:29Z

Alex: /* Design summary */

2021-02-04T16:12:41Z

Design summary

Alex at 15:39, 4 February 2021

2021-02-04T15:39:53Z

Show changes

Alex: /* PV source circuit */

2021-02-04T14:40:50Z

PV source circuit

Alex: /* Wire, overcurrent protection, and disconnect sizing and selection */

2021-02-04T14:04:35Z

Wire, overcurrent protection, and disconnect sizing and selection

Show changes

Alex: /* Phase 2: Wire ampacity */

2021-02-04T00:14:43Z

Phase 2: Wire ampacity

Alex: /* Phase 4: Voltage drop */

2021-02-03T16:40:11Z

Phase 4: Voltage drop

@@ Line 605: / Line 605: @@
 ==[[MPPT charge controller sizing and selection]]==
-A [[Charge controller#Charge controller types|MPPT charge controller]] is rated to operate at a particular [[DC system voltage]], maximum current and maximum voltage. MPPT charge controllers can charge the battery bank with any [[Series and parallel|series and parallel]] configuration of modules that doesn't exceed the maximum voltage and maximum current or drop below the required charging voltage of the [[Energy storage|energy storage system]]. Exceeding the voltage rating of an MPPT due to cold temperatures can damage it. Many charge controllers allow the current rating to be exceeded to a certain point without damage, just lost energy - it depends on the charge controller. There are several important calculations that must be performed to properly size an MPPT charge controller:
+A [[Charge controller#Charge controller types|MPPT charge controller]] is rated to operate at a particular [[DC system voltage]], maximum current and maximum voltage. MPPT charge controllers can charge the battery bank with any [[Series and parallel connections|series and parallel]] configuration of modules that doesn't exceed the maximum voltage and maximum current or drop below the required charging voltage of the [[Energy storage|energy storage system]]. Exceeding the voltage rating of an MPPT due to cold temperatures can damage it. Many charge controllers allow the current rating to be exceeded to a certain point without damage, just lost energy - it depends on the charge controller. There are several important calculations that must be performed to properly size an MPPT charge controller:
 *Should be sized to work with a series and parallel PV source circuit configuration of the PV source that will not damage the charge controller due to high voltages resulting from [[Weather and solar resource evaluation|low temperatures]] at the project location.
 *Should be sized to work with a series and parallel PV source circuit configuration of  that will still be able to properly charge the [[:Category:Energy storage|energy storage system]] under [[Weather and solar resource evaluation|high temperatures]] and as PV modules age at the project location.

@@ Line 1,045: / Line 1,045: @@
 |}
-<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 4 mm² / 12 AWG, 90°C wet/dry rated PV wire with an ampacity rating of 25 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 25 A is larger than the required 14.76 A ampacity.
+<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|allowable wire ampacity table]]. A 4 mm² / 12 AWG, 90°C wet/dry rated PV wire with an ampacity rating of 25 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 25 A is larger than the required 14.76 A ampacity.
 </li>
 </ol>
@@ Line 1,070: / Line 1,070: @@
 {| class="wikitable" border=1 style="width: 80%;"
 ! style="width: 20%"|Maximum current under conditions of use
-! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
+! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
 |-
+|
@@ Line 1,172: / Line 1,172: @@
 |}
-<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 10 mm² / 8 AWG, 90°C wet/dry rated wire with an ampacity rating of 50 A will be used. 50 A is larger than the required 31.5 A ampacity.
+<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|allowable wire ampacity table]]. A 10 mm² / 8 AWG, 90°C wet/dry rated wire with an ampacity rating of 50 A will be used. 50 A is larger than the required 31.5 A ampacity.
 </li>
 </ol>
@@ Line 1,195: / Line 1,195: @@
 {| class="wikitable" border=1 style="width: 80%;"
 ! style="width: 20%"|Maximum current under conditions of use
-! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
+! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
 |-
+|
@@ Line 1,298: / Line 1,298: @@
 |}
-<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 25 mm² / 4 AWG, 75° wet / 90°C dry rated wire with an ampacity rating of 85 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 85 A is larger than the required 60 A ampacity.
+<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|allowable wire ampacity table]]. A 25 mm² / 4 AWG, 75° wet / 90°C dry rated wire with an ampacity rating of 85 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 85 A is larger than the required 60 A ampacity.
 </li>
 </ol>
@@ Line 1,323: / Line 1,323: @@
 {| class="wikitable" border=1 style="width: 80%;"
 ! style="width: 20%"|Maximum current under conditions of use
-! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
+! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
 |-
+|
@@ Line 1,426: / Line 1,426: @@
 |}
-<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 35 mm² / 2 AWG, 75°C dry/wet rated wire with an ampacity rating of 115 A at 75°C will be used for this circuit as this is a commonly used wire type for a circuit of this type. 115 A is larger than the required 76.7 A ampacity.
+<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|allowable wire ampacity table]]. A 35 mm² / 2 AWG, 75°C dry/wet rated wire with an ampacity rating of 115 A at 75°C will be used for this circuit as this is a commonly used wire type for a circuit of this type. 115 A is larger than the required 76.7 A ampacity.
 </li>
 </ol>
@@ Line 1,452: / Line 1,452: @@
 {| class="wikitable" border=1 style="width: 80%;"
 ! style="width: 20%"|Maximum current under conditions of use
-! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
+! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
 |-
+|
@@ Line 1,538: / Line 1,538: @@
 |}
-<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 10 mm² / 8 AWG, 75° wet / 90°C dry rated wire with an ampacity rating of 50 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 50 A is larger than the required 31.3 A ampacity.
+<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|allowable wire ampacity table]]. A 10 mm² / 8 AWG, 75° wet / 90°C dry rated wire with an ampacity rating of 50 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 50 A is larger than the required 31.3 A ampacity.
 </li>
 </ol>
@@ Line 1,563: / Line 1,563: @@
 {| class="wikitable" border=1 style="width: 80%;"
 ! style="width: 20%"|Maximum current under conditions of use
-! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
+! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
 |-
+|
@@ Line 1,700: / Line 1,700: @@
 |}
-<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 2.5 mm² / 14 AWG, 75° wet / 90°C dry rated wire with an ampacity rating of 20 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 20 A is larger than the required 7.4 A ampacity.
+<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|allowable wire ampacity table]]. A 2.5 mm² / 14 AWG, 75° wet / 90°C dry rated wire with an ampacity rating of 20 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 20 A is larger than the required 7.4 A ampacity.
 </li>
 </ol>
@@ Line 1,725: / Line 1,725: @@
 {| class="wikitable" border=1 style="width: 80%;"
 ! style="width: 20%"|Maximum current under conditions of use
-! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
+! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
 |-
+|
@@ Line 1,814: / Line 1,814: @@
 |}
-<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 70 mm² / 2/0 AWG, 75°C dry/wet rated wire with an ampacity rating of 175 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 175 A is larger than the required 120 A ampacity.
+<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|allowable wire ampacity table]]. A 70 mm² / 2/0 AWG, 75°C dry/wet rated wire with an ampacity rating of 175 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 175 A is larger than the required 120 A ampacity.
 </li>
 </ol>
@@ Line 1,839: / Line 1,839: @@
 {| class="wikitable" border=1 style="width: 80%;"
 ! style="width: 20%"|Maximum current under conditions of use
-! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
+! style="text-align:left;"| = [[Wire, overcurrent protection, and disconnect sizing and selection#Conductor ampacity table|Wire ampacity from allowable wire ampacity table]] × Total wire correction parameter (Phase 2).
 |-
+|

@@ Line 1,557: / Line 1,557: @@
 | = 25 A × 1.25 = 31.25 A
 |}
-<li>A standard 40 A AC residual current device will be used. This is breaker is larger than the required minimum OCPD size, but smaller than the 50 A rated ampacity of the wire that it will protect.</li>
+<li>A standard 40 A AC residual current device will be used. This breaker is larger than the required minimum OCPD size, but smaller than the 50 A rated ampacity of the wire that it will protect.</li>
 <li>Verify that the chosen OCPD size from Step 2 will protect the wire size chosen in Phase 2 from excessive current under the conditions of use. The current rating of the chosen OCPD size (Step 2) must be less than the calculated maximum current under conditions of use ''unless'' the calculated maximum current under conditions of use is between standard OCPD values, in this case the next largest OCPD size is used from the [[Wire, overcurrent protection, and disconnect sizing and selection#Phase 3: Overcurrent protection and disconnects|list of standard OCPD sizes]]. If the current rating of the chosen OCPD size is larger than the maximum OCPD size under conditions of use, then the wire size must be increased until it passes this test.
@@ Line 1,719: / Line 1,719: @@
 | = 5.2 A × 1.25 = 6.5 A
 |}
-<li>A standard 10 A AC breaker will be used. This is breaker is larger than the required minimum OCPD size and smaller than the 20 A rated ampacity of the wire that it will protect.</li>
+<li>A standard 10 A AC breaker will be used. This breaker is larger than the required minimum OCPD size and smaller than the 20 A rated ampacity of the wire that it will protect.</li>
 <li>Verify that the chosen OCPD size from Step 2 will protect the wire size chosen in Phase 2 from excessive current under the conditions of use. The current rating of the chosen OCPD size (Step 2) must be less than the calculated maximum current under conditions of use ''unless'' the calculated maximum current under conditions of use is between standard OCPD values, in this case the next largest OCPD size is used from the [[Wire, overcurrent protection, and disconnect sizing and selection#Phase 3: Overcurrent protection and disconnects|list of standard OCPD sizes]]. If the current rating of the chosen OCPD size is larger than the maximum OCPD size under conditions of use, then the wire size must be increased until it passes this test.
@@ Line 1,833: / Line 1,833: @@
 | = 120 A × 1.25 = 150 A
 |}
-<li>A 150 A DC breaker will be used. This is breaker is larger than the required minimum OCPD size and smaller than the 175 A rated ampacity of the wire that it will protect.</li>
+<li>A 150 A DC breaker will be used. This breaker is larger than the required minimum OCPD size and smaller than the 175 A rated ampacity of the wire that it will protect.</li>
 <li>Verify that the chosen OCPD size from Step 2 will protect the wire size chosen in Phase 2 from excessive current under the conditions of use. The current rating of the chosen OCPD size (Step 2) must be less than the calculated maximum current under conditions of use ''unless'' the calculated maximum current under conditions of use is between standard OCPD values, in this case the next largest OCPD size is used from the [[Wire, overcurrent protection, and disconnect sizing and selection#Phase 3: Overcurrent protection and disconnects|list of standard OCPD sizes]]. If the current rating of the chosen OCPD size is larger than the maximum OCPD size under conditions of use, then the wire size must be increased until it passes this test.

@@ Line 1,189: / Line 1,189: @@
 | = 31.5 A × 1.25 = 39.4 A
 |}
-<li>A standard 40 A DC breaker will be used. This is breaker is larger than the required minimum OCPD size, but smaller than the rated 50 A ampacity of the wire that it will protect.</li>
+<li>A standard 40 A DC breaker will be used. This breaker is larger than the required minimum OCPD size, but smaller than the rated 50 A ampacity of the wire that it will protect.</li>
 <li>Verify that the chosen OCPD size from Step 2 will protect the wire size chosen in Phase 2 from excessive current under the conditions of use. The current rating of the chosen OCPD size (Step 2) must be less than the calculated maximum current under conditions of use ''unless'' the calculated maximum current under conditions of use is between standard OCPD values, in this case the next largest OCPD size is used from the [[Wire, overcurrent protection, and disconnect sizing and selection#Phase 3: Overcurrent protection and disconnects|list of standard OCPD sizes]]. If the current rating of the chosen OCPD size is larger than the maximum OCPD size under conditions of use, then the wire size must be increased until it passes this test.
@@ Line 1,317: / Line 1,317: @@
 | = 60 A × 1.25 = 75 A
 |}
-<li>A standard 75 A DC breaker will be used. This is breaker is larger than the required minimum OCPD size, but smaller than the 85 A rated ampacity of the wire that it will protect.</li>
+<li>A standard 75 A DC breaker will be used. This breaker is larger than the required minimum OCPD size, but smaller than the 85 A rated ampacity of the wire that it will protect.</li>
 <li>Verify that the chosen OCPD size from Step 2 will protect the wire size chosen in Phase 2 from excessive current under the conditions of use. The current rating of the chosen OCPD size (Step 2) must be less than the calculated maximum current under conditions of use ''unless'' the calculated maximum current under conditions of use is between standard OCPD values, in this case the next largest OCPD size is used from the [[Wire, overcurrent protection, and disconnect sizing and selection#Phase 3: Overcurrent protection and disconnects|list of standard OCPD sizes]]. If the current rating of the chosen OCPD size is larger than the maximum OCPD size under conditions of use, then the wire size must be increased until it passes this test.
@@ Line 1,426: / Line 1,426: @@
 |}
-<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 25 mm² / 4 AWG, 75°C dry/wet rated wire with an ampacity rating of 85 A at 75°C will be used for this circuit as this is a commonly used wire type for a circuit of this type. 85 A is larger than the required 76.7 A ampacity.
+<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 35 mm² / 2 AWG, 75°C dry/wet rated wire with an ampacity rating of 115 A at 75°C will be used for this circuit as this is a commonly used wire type for a circuit of this type. 115 A is larger than the required 76.7 A ampacity.
 </li>
 </ol>
@@ Line 1,444: / Line 1,444: @@
 |-
+|
-| = 77 A × 1.25 = 96.3 A
+| = 76.7 A × 1.25 = 96 A
 |}
-<li>A standard 100 A DC breaker will be used. This is breaker is larger than the required minimum OCPD size but is larger than the 85 A rated ampacity of the wire that it will protect.</li>
+<li>A standard 100 A DC breaker will be used. This breaker is larger than the required minimum OCPD size but is smaller than the 115 A rated ampacity of the wire that it will protect.</li>
 <li>Verify that the chosen OCPD size from Step 2 will protect the wire size chosen in Phase 2 from excessive current under the conditions of use. The current rating of the chosen OCPD size (Step 2) must be less than the calculated maximum current under conditions of use ''unless'' the calculated maximum current under conditions of use is between standard OCPD values, in this case the next largest OCPD size is used from the [[Wire, overcurrent protection, and disconnect sizing and selection#Phase 3: Overcurrent protection and disconnects|list of standard OCPD sizes]]. If the current rating of the chosen OCPD size is larger than the maximum OCPD size under conditions of use, then the wire size must be increased until it passes this test.
@@ Line 1,455: / Line 1,455: @@
 |-
+|
-| = 85 A × 1 = 85 A
+| = 115 A × 1 = 115 A
 |}
@@ Line 1,464: / Line 1,464: @@
 |-
+|
-| = 100 A OCPD
+| = 125 A OCPD
 |}
@@ Line 1,472: / Line 1,472: @@
 |-
+|
-| = 100 A OCPD is equal to the maximum 100 A OCPD size
+| = 100 A OCPD is equal to the maximum 125 A OCPD size
 |}
 </ol>
@@ Line 1,481: / Line 1,481: @@
 If the voltage drop for the wire chosen in Phase 2 for a particular circuit is not within the [[Wire, overcurrent protection, and disconnect sizing and selection#Recommended circuit voltage drop values|recommended values]], then using a larger sized wire should be considered. Increasing the wire size will not affect any other part of this process; the calculated OCPD size can remain the same.
-This circuit will be 1.5 meters long one-way as it only needs to reach the DC busbars where the battery circuit is connected. It is 25 mm² / 4 AWG wire with a resistance value in (Ω/Km) of 1.053 Ω. It is recommended that the voltage drop between the charge controller and energy storage system be less than 1.5%. The nominal circuit voltage is the [[DC system voltage]]: 48 V.
+This circuit will be 1.5 meters long one-way as it only needs to reach the DC busbars where the battery circuit is connected. It is 35 mm² / 4 AWG wire with a resistance value in (Ω/Km) of 0.661 Ω. It is recommended that the voltage drop between the charge controller and energy storage system be less than 1.5%. The nominal circuit voltage is the [[DC system voltage]]: 48 V.
 {| class="wikitable" border=1 style="width: 80%;"
@@ Line 1,488: / Line 1,488: @@
 |-
+|
-| = 2 × 76.7 × 1.5 m × 1.053 Ω ÷ 1000 = .24 V
+| = 2 × 76.7 × 1.5 m × 0.661 Ω ÷ 1000 = .15 V
 |}
@@ Line 1,496: / Line 1,496: @@
 |-
+|
-| = .24 V ÷ 48 V × 100 = .50%
+| = .15 V ÷ 48 V × 100 = .31%
 |}
-<span style="color:#FFFFFF; background:#008000">'''.50% voltage drop for this circuit is acceptable. The wire size is okay.'''</span>
+<span style="color:#FFFFFF; background:#008000">'''.31% voltage drop for this circuit is acceptable. The wire size is okay.'''</span>
 ===Inverter output circuit===
@@ Line 1,911: / Line 1,911: @@
 ==Design summary==
-[[File:ACexamplewiring210204.png|thumb|A three-line wiring diagram for this system. Equipment grounding wires are not labeled for simplicity.]]
+[[File:ACexamplewiring2102041.png|thumb|A three-line wiring diagram for this system. Equipment grounding wires are not labeled for simplicity.]]
 *'''DC nominal voltage:''' 48 V
 *'''AC nominal voltage:''' 120 V

@@ Line 1,911: / Line 1,911: @@
 ==Design summary==
-[[File:ACexamplewiring - 2101151.png|thumb|A three-line wiring diagram for this system. Equipment grounding wires are not labeled for simplicity.]]
+[[File:ACexamplewiring210204.png|thumb|A three-line wiring diagram for this system. Equipment grounding wires are not labeled for simplicity.]]
 *'''DC nominal voltage:''' 48 V
 *'''AC nominal voltage:''' 120 V

@@ Line 1,045: / Line 1,045: @@
 |}
-<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 4 mm² PV wire with an ampacity rating of 25 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 25 A is larger than the required 14.76 A ampacity.
+<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 4 mm² 90°C wet/dry rated PV wire with an ampacity rating of 25 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 25 A is larger than the required 14.76 A ampacity.
 </li>
 </ol>

@@ Line 1,283: / Line 1,283: @@
 {| class="wikitable" border=1 style="width: 80%;"
 ! style="width: 20%"|Total wire correction parameter
-! style="text-align:left;"| = Smaller of (Ambient temperature correction factor × Conduit fill correction factor) '''or''' .8
+! style="text-align:left;"| = Ambient temperature correction factor × Conduit fill correction factor
 |-
+|
-| = Smaller of (1.00 × 1) or .8 = .8
+| = Smaller of (1.00 × 1) = 1
 |}
@@ Line 1,295: / Line 1,295: @@
 |-
+|
-| = 60 A ÷ .8 = 75 A
+| = 60 A ÷ 1 = 60 A
 |}
-<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 35 mm² 75° wet / 90°C dry rated wire with an ampacity rating of 115 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 115 A is larger than the required 75 A ampacity. This is the largest size wire that the terminals on the charge controller will accept.
+<li>Select a wire size with a maximum rated ampacity equal to or above the minimum wire ampacity calculated in the previous step using the [[Wire, overcurrent protection, and disconnect sizing and selection#Allowable wire ampacity table|allowable wire ampacity table]]. A 25 mm² 75° wet / 90°C dry rated wire with an ampacity rating of 85 A will be used for this circuit as this is a commonly used wire type for a circuit of this type. 85 A is larger than the required 60 A ampacity.
 </li>
 </ol>

@@ Line 1,224: / Line 1,224: @@
 If the voltage drop for the wire chosen in Phase 2 for a particular circuit is not within the [[Wire, overcurrent protection, and disconnect sizing and selection#Recommended circuit voltage drop values|recommended values]], then using a larger sized wire should be considered. Increasing the wire size will not affect any other part of this process; the calculated OCPD size can remain the same.
-This circuit will be 10 meters long one-way. It is 25 mm² wire with a resistance value in (Ω/Km) of 1.053 Ω. It is recommended that the voltage drop between the PV source and the charge controller be kept below 2%.
+This circuit will be 10 meters long one-way. It is 25 mm² wire with a resistance value in (Ω/Km) of 1.053 Ω. It is recommended that the voltage drop between the PV source and the charge controller be kept below 3%.
 {| class="wikitable" border=1 style="width: 80%;"