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clause 4.7 有提到 8 Z2 A& S! ?+ K# e5 }8 k4 S; e
Examples of methods deemed efficient to prevent a wire from becoming detached are:
' X! P3 J. k7 S G7 h z; @, ka) wires are retained by a cord anchorage adjacent to the terminals;
# P4 M( ~% v+ jb) conductor is clamped by a spring type screwless terminal;
! e% p) n. `# V* b1 [c) the wire conductor is anchored to the tag before soldering, unless breakage close to the soldering place is
$ P; {. z9 C' t+ g( slikely to occur as a result of vibration;/ z' i m- ?9 u& T6 p0 E) D
d) wires are twisted together in a reliable manner;
5 R+ n8 Q" u+ Z7 ~, D' Oe) wires are fastened together by insulation tape, sleeves, or the like; h. `2 I! B) ]7 n- Y
f) the wire conductor is inserted into a hole in a printed board, bent and soldered, the hole having a diameter
- K6 c/ B% g6 g9 L* a Xslightly greater than the conductor;% A! f) ^+ f+ k
g) the wire conductor is securely wrapped around the terminal by means of a special tool (see Figure 19);; S+ W4 C, {8 J7 U9 m/ G: s
h) the wire conductor is crimped to the terminal by means of a special tool (see Figure 19).
, J2 q- L6 V) P& M, nThe methods under a) to h) apply to internal wiring and the methods under a) and b) to rewireable external flexible0 V- Z1 {& c; y; j
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