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Input / Output 4-3
MN1940
4.2.1 Wire sizes
Table 1 describes the wire sizes to provide optimal protection against EMI and RFI. Correct
wire size is determined by the current requirement and the cable length. The actual cable type,
wire gauge, shield type and filtering devices used are dependent on the customer’s application
and system. Always use shielded twisted pairs for AC and DC supply cables. For logic wiring
(see section 4.3) AWG22 wire is recommended.
Supply current
Cable length
(meters)
Cable length
(feet)
Minimum
Wire Gauge
(
)
(
)
AWG
mm
2
3
10
20
0.5
8
25
20
0.5
1 A peak
15
50
18
1.0
p
23
75
18
1.0
30
100
16
1.3
3
10
20
0.5
8
25
18
1.0
2 A peak
15
50
16
1.3
p
23
75
14
2.0
30
100
14
2.0
3
10
18
1.0
8
25
16
1.3
3 A peak
15
50
14
2.0
p
23
75
12
3.3
30
100
12
3.3
3
10
18
1.0
8
25
16
1.3
4 A peak
15
50
14
2.0
p
23
75
12
3.3
30
100
12
3.3
Table 1 - Power wire ratings
