Connecting The Xw Solar Charge Controller To The Distribution Panel; Table 4-5 One-Way Wire Distance And Wire Size For A 48 Vdc System - Xantrex XW4024-120/240-60 Installation Manual

Table 4-5 One-Way Wire Distance and Wire Size for a 48 Vdc System

Maximum one-way wire distance for a < 3% voltage drop assuming 60 Adc charging current
Distance in feet (meters)
Amps 12 AWG
10 70.4 (21.44) 112.0 (34.16)
12 58.4 (17.84) 92.8 (28.32)
14 50.4 (15.36) 80.0 (24.40)
16 44.0 (13.44) 69.6 (21.20)
18 39.2 (11.92) 70.4 (19.04)
20 35.2 (10.72) 56.0 (17.04)
25 44.8 (13.68)
30 37.6 (11.44)
35
40
45
50
60
a.These wire sizes are not approved by UL to be installed in the controller, but may be used external to the controller (using a splicer block) to reduce
voltage drop and improve performance.

Connecting the XW Solar Charge Controller to the Distribution Panel

975-0239-01-01
For 48 Vdc systems
10 AWG 8 AWG 6 AWG
177.6 (54.16) 282.4 (86.80)
148.0 (45.12) 235.2 (71.68)
127.2 (38.8) 201.6 (61.44)
111.2 (33.92) 176.8 (53.92)
99.2 (30.24) 156.8 (47.76)
88.8 (27.04) 140.8 (42.88)
71.2 (21.68) 112.8 (34.40)
59.2 (18.08) 94.4 (28.80)
51.2 (15.60) 80.8 (26.64)
44.8 (13.68) 70.4 (21.44)
62.4 (19.04)
56.8 (17.28)
50.4 (15.36)
WARNING: Shock Hazard
Whenever a PV array is exposed to light, a shock hazard exists at the output wires or exposed
terminals. To reduce the risk of shock during installation, cover the array with an opaque (dark)
material before making the connections.
WARNING: Shock Hazard
Do not connect the battery negative to ground. Bonding the battery negative to ground disables PV
ground-fault protection. For more information, see "Grounding" on page 4–8. See Figure 4-9 on
page 4–15 for correct routing of the battery negative.
CAUTION: Equipment damage
Do not connect the PV negative and battery negative terminals together anywhere in the system,
including the XW Power Distribution Panel or other DC disconnect. The PV negative and battery
negative must be connected to separate terminals as marked on the unit.
To connect the XW Solar Charge Controller:
1. Ensure the PV array disconnect and battery disconnect are turned off.
2. Ground the XW SCC. Connect a grounding conductor between an XW SCC ground
lug and the power distribution panel ground bus. See Figure 4-9.
3. Connect the PV array negative (–) output to the XW SCC terminal marked
This manual for use by qualified personnel only
a
Distance in feet (meters)
4 AWG 3 AWG
448.8 (136.8) 567.2 (172.88) 716.8 (218.48)
373.6 (113.84) 472.8 (144.08) 596.8 (181.92)
320.8 (97.76) 404.8 (123.36) 512.0 (156.08)
280.0 (85.36) 354.4 (108.00) 448.0 (136.56)
249.6 (76.08) 315.2 (96.08) 398.4 (121.44)
224.0 (68.24) 283.2 (86.32) 358.4 (109.28)
179.2 (54.64) 226.4 (69.04) 286.4 (87.28)
149.6 (45.60) 188.8 (57.52) 239.2 (72.88)
128.0 (39.04) 161.6 (49.28) 204.8 (62.40)
112.0 (34.16) 141.6 (43.12) 179.2 (54.64)
100.0 (30.48) 125.6 (38.32) 159.2 (48.56)
89.6 (27.28) 113.6 (34.64) 143.2 (43.68)
74.4 (22.64) 94.4 (28.80) 119.2 (36.32)
2 AWG 1 AWG 1/0 AWG
900.0 (274.32) 1133.6 (345.52)
749.6 (228.48) 944.8 (288.00)
643.2 (196.08) 809.6 (246.80)
562.4 (171.44) 708.8 (216.08)
500.0 (152.40) 629.6 (191.92)
449.6 (137.04) 567.2 (172.80)
360.0 (109.76) 453.6 (138.24)
300.0 (91.44) 377.6 (115.12)
256.8 (78.24) 324.0 (98.72)
224.8 (68.48) 283.2 (86.32)
200.0 (60.96) 252.0 (76.80)
180.0 (54.88) 226.4 (69.04)
149.6 (45.60) 188.8 (57.52)
–.
PV
Wiring
4–13