Ametek Sorensen SGI Series, Руководство по эксплуатации

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Sorensen SGI Series Installation
M550221-01 Rev U 2-7
2.5
Wire Selection
Care must be taken to properly size all conductors for the input and output of
the power supply. This section provides guidance in the selection of wire size.
CAUTION!
Cables with Class B or C stranding should be used. Fine-stranded
(flexible) cables should not be used unless crimp-on lugs or ferrules
are used that are approved for fine-stranded cables.
2.5.1 Wire Size
The tables below will assist in determining the appropriate wire size for both
the input and output connections. Table 2
–8 gives
minimum recommended
wire size; these recommendations are for copper wire only. This table is
derived from the National Electrical Code, and is for reference only. Local laws
and conditions may have different requirements. For higher ratings, wires can
be paralleled; refer to the National Electrical Code for guidelines.
Size Temperature Rating of Copper Conductor
AWG
60°C 75°C 85°C 90°C
Types: RUW,
T, TW, UF
Types: FEPW,
RHW, RH, RUH,
THW, THWN,
XHHW, USE, ZW
Types: V, MI Types: TA, TBS,
SA, AVB, SIS, FEP,
FEPB, RHH, THHN,
XHHW
Current Rating, A(RMS)
14 20 20 25 25
12 25 25 30 30
10 30 35 40 40
8 40 50 55 55
6 55 65 70 75
4 70 85 95 95
3 85 100 110 110
2 95 115 125 130
1 110 130 145 150
0 125 150 165 170
00 145 175 190 195
000 165 200 215 225
0000 195 230 250 260
Table 2
–8. Minimum Wire Size