5.4.2 Beads and ceramic insulators5.4.2.1 Beads and similar ceramic insulators on conductors shall:a) Be so fixed or supported that they cannot change their position in such a way that a hazard would be created; andb) Not rest on sharp edges or sharp corners. 5.4.2.2 If beads are located inside flexible metal conduits, they shall be contained within an insulating sleeve, unless the conduit is mounted or secured in such a way that movement in normal use would not create a hazard. Compliance is checked by inspection and, where necessary, by the following test:a) A force of 10 N (2.25 lbf) is applied to the insulators or to the conduit. The resultingmovement, if any, shall not create a hazard in the meaning of this standard