UL有吊链规定吗？和吊重？
2.8 3.2 3.8 4.2的吊链能吊多重灯，一般多重的灯要加刹车线 至少承受5倍所吊灯重吧. UL 1598里面有专门的规定吊重的要求
16.15 Loading
16.15.1 A supporting device shall support a load equal to four times the total mass to be supported under
intended operating conditions for 1 h. The load shall be applied in the direction of actual loading
conditions.
16.15.2 Where more than one support is provided, the load shall be distributed as follows:
(a) where the parts supported are no more than 11.3 kg (25 lb), the full load shall be applied to
each support; or
(b) where the parts supported are more than 11.3 kg (25 lb), the distribution of the load shall
be similar to that encountered in the field.
16.15.3 There shall be no deflection or deformation either during or after loading that reduces electrical
spacings or compromises safety.
额外的支承措施要求
10.2.5 A luminaire, including lamps, shall be provided with means of support independent of the outlet
box and shall be marked and provided with installation instructions in accordance with Table 20.1.1, Items
1.21 and 1.33, if it is:
(a) a ceiling surface type and weighs more than 22.7 kg (50 lb); or
(b) a surface wall-mounted type and weighs more than 11.4 kg (25 lb). 2楼的正确哟 没看懂，有中文版的吗
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