UL1618 300 V 80 °C PVC Hook-Up Wire

UL1618 is a PVC-insulated hook-up wire manufactured by Xinya Electronic Co., Ltd. It is rated 300 V, 80 °C. It is supplied in 15 recorded constructions spanning 16–28 AWG, with an overall diameter of 1.9–3.2 mm, cut to the length you order.

UL1618 at a glance

• 16–28 AWG, across 15 listed constructions
• Both solid (single-strand) and stranded conductors are listed — 7 solid and 8 stranded
• Insulation wall 0.39–0.47 mm
• Overall diameter 1.9–3.2 mm
• Max. conductor resistance 14–239 Ω/km at 20 °C DC (roughly 4.3–72.8 Ω per 1,000 ft)
• Routine withstand test on every listed row: 2000 VAC, 1 min

How UL1618 compares with its nearest alternatives

UL1618 and UL1185 share the 300 V rating and 80 °C temperature rating. Overall diameter runs 1.9–3.2 mm for UL1618 against 2.1–3.8 mm for UL1185. UL1618 is the tighter of the two where harness space is limited. Insulation wall is 0.39–0.47 mm against 0.4–0.46 mm. Size coverage is 16–28 AWG against 16–30 AWG.

UL1618 and UL10913 share the 300 V rating and 80 °C temperature rating. Overall diameter runs 1.9–3.2 mm for UL1618 against 1.25–2.55 mm for UL10913. UL10913 is the tighter of the two, so UL1618 is the option to take only when the larger diameter is acceptable. Insulation wall is 0.39–0.47 mm against 0.46 mm. Size coverage is 16–28 AWG against 16–32 AWG.

Conductor construction and selection

Both conductor families are listed. Single-strand rows such as 1/0.32 at 28 AWG suit fixed routing and insulation-displacement termination, where the conductor is not flexed after installation. Stranded rows such as 7/0.127 at 28 AWG flex repeatedly and are the usual choice for hand-soldered harnesses and anything that has to follow a moving path. Conductor resistance is the same at a given size, so the choice between them is mechanical rather than electrical.

How to read the UL1618 table

“Insulation O.D. (mm)” is measured over the insulation, not over a jacket, tape or braid. Conductor resistance is stated at 20 °C DC per kilometre — divide by 3.281 for ohms per 1,000 ft. The withstand column is a routine production test applied to finished lengths, not a continuous working voltage.

Questions buyers ask about UL1618

Which sizes of UL1618 are available?

16–28 AWG, across the 15 constructions in the table below. Sizes outside the table can be quoted on request.

Can UL1618 be supplied in both solid and stranded conductor?

Yes. The documented range covers 15 constructions, of which 7 are single-strand and 8 are stranded. Give the construction, not only the AWG, when you request a quotation.

What overall diameter does UL1618 run to?

The documented range is 1.9–3.2 mm. Quote the size, not the style alone, when the diameter has to fit a specific gland, grommet or channel.