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clause 4.7 有提到 $ _) x |& B! X$ I9 T! T# Z7 _0 M7 b
Examples of methods deemed efficient to prevent a wire from becoming detached are:) Y# f: t/ c4 C1 J( e
a) wires are retained by a cord anchorage adjacent to the terminals;+ l6 ~2 V3 ~; x% j9 \" Q0 R
b) conductor is clamped by a spring type screwless terminal;
3 V; a# r" r( d& ^c) the wire conductor is anchored to the tag before soldering, unless breakage close to the soldering place is; _, w" M( H6 J
likely to occur as a result of vibration;
5 d7 g9 {/ Z; v7 H( r8 Id) wires are twisted together in a reliable manner;
% U/ W% Y) L, A5 A( i8 ne) wires are fastened together by insulation tape, sleeves, or the like;
9 n( Q% `/ m. Q9 jf) the wire conductor is inserted into a hole in a printed board, bent and soldered, the hole having a diameter. A. }, S0 Q- X) I: V- S6 j
slightly greater than the conductor;
; v1 I3 R4 p0 T8 k) z" z! Ig) the wire conductor is securely wrapped around the terminal by means of a special tool (see Figure 19);
: \/ i- w8 \! G9 U. rh) the wire conductor is crimped to the terminal by means of a special tool (see Figure 19).; S/ F3 t; k+ `, z
The methods under a) to h) apply to internal wiring and the methods under a) and b) to rewireable external flexible$ }0 ^. T" r! ~" l$ [
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