ChargePoint Power Block Design Manual page 42

Conduit and Wire Size Requirements
Note: The tables provide the largest possible wire sizes in each case. All sizing assumes a maximum
ambient temperature of 50°C (122°F). Actual wire sizing and types should be designed to be site-specific.
48 V DC Power
Type Wire Insulation Rating
48 VDC 1000 VDC
AC Input
Input Current
Type Rating
AC input 260 A, 480
(THHN) VAC
37
Size
Must be 16 mm
Conductors
Per Pole Size
1 400 mm
(750 kcmil)
2
2 185 mm
(350 kcmil)
3 120 mm
(4/0 AWG)
Conduit Trade Size
2
(6 AWG)
21 mm (3/4 in)
Ground
2 2
27 mm
(3 AWG)
2
27 mm
(3 AWG)
2 2
27 mm
(3 AWG)
Minimum Conduit Size
91 mm
(3.5 in trade)
91 mm
(3.5 in trade)
76 mm
(3 in trade)