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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
3 J1 b; O% `& k4 _( L* }* r: yvarnished-cloth tubing, phenolic, vulcanized fiber or the equivalent under the clamp, if the strain relief
0 R& G2 ^$ z- z" ^( rassembly complies with the requirements in 54.3. Thermoplastic tubing is not acceptable over) C* M! u, Q" E
thermoplastic cords.
; r1 |% U4 ]0 s% v0 FException: A non-metallic clamp may be used on Types SPT-1, SPT-2, SVT, and SVTO flexible cords8 |6 f; f3 f+ r& a2 C
without tubing, fiber or equivalent protection under the clamp if it complies with the requirements in 54.3.% t" a( q0 i; ~& Q; T3 O- x/ i9 e
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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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