UL 3644 is a UL-certified silicone appliance wire rated 1000 V AC, with 150\u00b0C and 200\u00b0C constructions. It is intended for internal appliance wiring where the wire is totally enclosed, and the required temperature grade should appear on the equipment specification.<\/p>\n
The dimension table now includes 19 conductor sizes from 30 AWG through 4\/0 AWG. The nominal insulation wall changes with conductor size, starting at 0.82 mm for the 30\u201310 AWG rows. Stranding and finished diameter are shown together, while a separate style thickness schedule covers the wider range up to 1000 kcmil. This separates a finished-wire dimension from the minimum insulation requirement used to define the construction.<\/p>\n
When replacing an enclosed appliance lead, check the temperature grade and the available bend space before assuming that another 1 kV silicone wire will fit. The listed constructions use a bend radius of 10 times finished diameter. A different wall schedule can change the terminal entry clearance even when the AWG and voltage rating match.<\/p>\n