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Appendix B—Installation guidelines
POWERXL SERIES VFD MN040002EN—February 2018 www.eaton.com
Table 45. North America cable and fuse sizes—440 Vac to 500 Vac ratings
Frame
size
CT
Amp
Suffix
VT
Amp
Suffix
460 V
input
current
(CT/IH)
460 V
input
current
(VT/IL)
NEC motor
Amp
rating
at 460 V
Current
(CT/IH)
at 50 °C
Current
(VT/IL)
at 40 °C
Recommended
fuse rating
NEC
wire size (AWG)
Terminal connection
size(AWG)
Line and
motor Ground
Line and
motor Ground
FR0 2D2 3D3 2.6 3.8 3 2.1 3 10 14 14 26–10 18–10
3D3 4D3 3.8 4.3 3.4 3 3.4 10 14 14 26–10 18–10
4D3 5D6 4.3 6 4.8 3.4 4.8 10 14 14 26–10 18–10
5D6 7D6 6 9.6 7.6 4.8 7.6 15 14 14 2 6 –10 18 –10
FR1 2D2 3D3 2 2.8 3.0 2.1 3.0 10 14 14 26–10 18–10
3D3 4D3 2.8 3.2 3.4 3.0 3.4 10 14 14 26–10 18–10
4D3 5D6 3.2 4.5 4.8 3.4 4.8 10 14 14 26–10 18–10
5D6 7D6 4.5 7.1 7.6 4.8 7.6 10 14 14 26 –10 18 –10
7D6 9D0 7.1 8.4 — 7.6 7.6 15 14 14 2 6 –10 18 –10
9D0 012 8.4 10.2 11 7.6 11 15 14 14 26-10 18–10
FR2 012 016 10.2 13 14 11 14 20 12 12 20–6 12–6
016 023 13 19.6 21 14 21 30 10 10 20–6 12–6
023 031 19.5 25.2 27 21 27 35 8 8 20–6 12–6
FR3 031 038 25.1 31.7 34 27 34 50 6 8 6–2 14–4
038 046 31.6 37 40 34 40 60 6 8 6–2 14–4
046 061 37.2 48.1 52 40 52 80 4 6 6–2 14–4
FR4 061 072 48.3 59.3 65 52 65 100 4 4 6–1/0 10–1/0
072 087 60.4 70.3 77 65 77 110 3 4 6–1/0 10–1/0
087 105 71.6 87.6 96 77 96 125 1 3 6–1/0 10–1/0
FR5 105 140 89.2 114.4 124 96 124 175 2/0 3 1/0–350 kcmil 8–250 kcmil
140 170 115.3 144 156 124 156 200 3/0 3 1/0–350 kcmil 8–250 kcmil
170 205 145 166.1 180 156 180 250 250 kcmil 3 1/0–350 kcmil 8–250 kcmil
FR6 205 261 169.8 226.4 240 180 240 400 2*2/0 3 2*(1/0–300 kcmil) 3–300 kcmil
245 310 226.4 284.9 302 240 302 400 2*4/0 3 2*(1/0–300 kcmil) 3–300 kcmil
otes: N Line and motor cable size is selected according to UL508C Table 40.3 for copper conductor rated 75 °C.
Use only with copper wire rated 75 °C here. Size requirements for other different wire types are defined
in the National Electrical Code, ANSI/NFPA 70
Earthing conductor size is determined by the maximum overcurrent device rating used ahead of the drive
according to UL508C Table 6.4
If power cubes or bypass are used, a UL listed Class RK5, J, T, or equivalent fuse is recommended