Table of Recommended Fuse Ratings, Feeder Cables & Earth Sizes
For 380 – 415 Volts 3phase / 50 Hz Supplies
Assumes wired in multi-core steel wire armour, PVC Insulated cable. Clipped direct to IEE 16th edition.
Table of Recommended Fuse Ratings, Feeder Cables & Earth Sizes
For 380 – 415 Volts 3phase / 50 Hz Supplies
Assumes wired in multi-core steel wire armour, PVC Insulated cable. Clipped direct to IEE 16th edition.
KW Rating | Full Package Amps | Rec. Mains Fuse Motor Rate (A) | Red. Feeder Cable mm² | Current Carrying Capacity of Mains (A) | Rec. Inductive Isolator Rating (A) |
---|---|---|---|---|---|
4 | 8 | 20 | 2.5 | 25 | 20 |
5.5 | 11 | 20 | 2.5 | 25 | 20 |
7.5 | 15 | 32 | 4 | 33 | 32 |
11 | 24.3 | 32 | 6 | 42 | 32 |
15 | 32.1 | 50 | 10 | 58 | 63 |
18.5 | 36.7 | 50 | 10 | 58 | 63 |
22 | 42.3 | 63 | 16 | 77 | 63 |
30 | 55.6 | 80 | 25 | 102 | 100 |
37 | 80 | 100 | 35 | 125 | 100 |
45 | 96 | 125 | 50 | 151 | 125 |
50 | 104.5 | 125 | 50 | 151 | 125 |
55 | 109 | 160 | 70 | 192 | 200 |
75 | 156 | 200 | 95 | 231 | 200 |
90 | 180.6 | 200 | 95 | 231 | 200 |
110 | 223 | 250 | 120 | 267 | 315 |
132 | 251 | 315 | 185 | 348 | 315 |
150 | 302 | 400 | 240 | 409 | 400 |
N.B. – Cable sizes are for guide only as current range can vary with cable length, ambient and working temperature