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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
7 G$ i& B0 { y# [; r- q* B6 }3 kvarnished-cloth tubing, phenolic, vulcanized fiber or the equivalent under the clamp, if the strain relief
! v0 M4 E- u7 M8 \7 E- x! k Wassembly complies with the requirements in 54.3. Thermoplastic tubing is not acceptable over4 Y+ y4 E4 L& a- g2 A! R
thermoplastic cords.- P" M6 k* k g! I9 @9 ?
Exception: A non-metallic clamp may be used on Types SPT-1, SPT-2, SVT, and SVTO flexible cords
: t( o9 v$ s0 Y0 B8 _2 Cwithout tubing, fiber or equivalent protection under the clamp if it complies with the requirements in 54.3.) V, m; ^7 K! m
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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。
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