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have some part which not clear,so have a help.
+ D6 Z" C0 m3 I; R$ ^ AFor portable light,please the following information(form UL153):; J( J7 S6 x1 S& v3 P; x" ]' ` }6 E
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8.4 When wires pass through a joint between sections of a portable luminaire that are separable for, G; F6 U: j- U
packing purposes, the joint shall be such that rotation of one section with respect to the other during the
- c- R! E+ F- P* ^( |assembly of the sections is limited to not more that 360 degrees. Friction alone does not meet the intent" ]2 y+ e4 x3 A7 Q3 [& |! o
of the requirement to prevent rotation.
* u+ T w' x/ U& c& ]/ b$ n3 ZException: When all of the following conditions exist, rotation between sections of a portable luminaire is; n, P5 _$ V% ^/ D% H! ?
not limited to 360 degrees:6 A$ H2 T6 @: v# s
a) The internal diameter of the tubing through which the wires pass is 1/2 inch (12.7 mm) or" ]' t& p; L: y9 k5 E
more or the Power Supply Cord Twist Test, Section 135A is conducted with acceptable results;4 s+ Y, X: @4 n# R$ C" D& _
and
! M0 I! d4 z% a" J: o) } Zb) The rotation during assembly is limited to not more than one revolution for each 3 inches (76. Y; B$ [7 B9 f0 {
mm) of unobstructed tubing length through which the wires pass, when such rotation does not
! S L( `, }+ u8 } j9 q' `. @place any stress on the conductors; and
) A A* X' t/ X) ic) The conductors do not involve splices unless the splices are:
' @+ [# o4 f1 H( X1) Inaccessible during assembly in accordance with Accessibility of Live Parts, Section
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2) Secured and provided with strain relief that has been shown to be reliable and not
+ h$ t' f8 I2 `5 ceasily defeated by the user.)
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# H# C) w& [- c5 G2 K4 B4 e6 W5 L有款落地的灯,它是由LAMP BASE,THREE TUBES,LAMPSHADE组成,为了方便装,分开来安装,只要用户按照说明书去安装,在这里就关系到线的问题,TUBE与TUBE 联接之间,就会导致线会旋转360 度,并且线径是小于12.7mm,在此想问一下如何解决这个问题。如果做了电源线扭曲测试,就不能免温升吗。。。请各位大侠提出意见。。。THANKS。。。
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