LED lamp, LED bulb lamp, LED spotlight UL certification and the matters of attention of UL1993+UL8750LED

1. the material of the lamp holder must be copper, copper alloy, aluminum, aluminum alloy. The ratio of copper to copper is greater than 80%
2. Plastic electrical enclosure shall comply with the provisions of UL file that minimum thickness models and burning rating of at least 94V-0 or above and at the same time HWI≤4，HAI ≤3，CTI Values are Dry location≤4  Damp location ≤3 Wet location ≤2.
3. If there is LED LENS, if used as a shell function it also needs to meet the requirements of the plastic shell. 
4. If the shell has an opening, the diameter is not allowed to exceed 2 millimeters, unless a cylindrical probe of any length of 2mm cannot touch the charged conductor. (except for the lamp holder)
5. The internal power cord requires perforated welding at one end of the PWB board. and a mechanical fixation is required at one end of the lamp head, and the wire is minimum at 24AWG. There is UL authentication and belongs to the LVAV category.
6. Most of the insulation between the driving plate and the shell adopts the heat shrinkable casing. Its thickness requires:
7. When the electrical gap between the insulating material and the metal shell is greater than half of the Table 6.1, the thickness of the insulating material can be reduced to 0.305mm