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11.3.2 A clamp may be used on Types SPT-1, SPT-2, SVT and SVTO flexible cords protected by
; m) l5 u) ]4 q- b' Wvarnished-cloth tubing, phenolic, vulcanized fiber or the equivalent under the clamp, if the strain relief* {$ ~5 g6 U+ h4 w/ T. y* i& q
assembly complies with the requirements in 54.3. Thermoplastic tubing is not acceptable over. N9 C5 V9 k; o/ P+ g3 X
thermoplastic cords.1 Z4 b! w) D+ q& y% c6 d5 z
Exception: A non-metallic clamp may be used on Types SPT-1, SPT-2, SVT, and SVTO flexible cords6 Z+ z+ J2 E, m. v8 T
without tubing, fiber or equivalent protection under the clamp if it complies with the requirements in 54.3.
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11.3.2说如果加绝缘套就可以直接使用在SPT-1, SPT-2, SVT and SVT,但是Exception说的很明确,如果是非金属的clamp,就不需要加绝缘套了,那么金属Clamp是必须加绝缘套的,而且满足54.3的测试即可。1 V8 O+ T* q# J7 U# A
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