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11.3.2 A clamp may be used on Types SPT-1, SPT-2, SVT and SVTO flexible cords protected by6 y& O- m. [+ R% g: d2 w3 H% l! _
varnished-cloth tubing, phenolic, vulcanized fiber or the equivalent under the clamp, if the strain relief
8 v, s2 g) u' C* t, zassembly complies with the requirements in 54.3. Thermoplastic tubing is not acceptable over1 s, T7 l' {# q- c! u) z6 ?) d
thermoplastic cords.4 p8 Q, K& X9 h: @
Exception: A non-metallic clamp may be used on Types SPT-1, SPT-2, SVT, and SVTO flexible cords
% R/ F1 I, N) {/ Y+ y& s9 Qwithout tubing, fiber or equivalent protection under the clamp if it complies with the requirements in 54.3." s1 P# E; J0 k5 x/ `
# n0 F( Y2 G. l$ W( t! M- c/ e11.3.2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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