What Is UL 3173 Wire?
UL 3173 wire is a single conductor hook-up wire with stranded tinned copper conductors that offer improved corrosion and oxidation resistance over pure copper. The wire has cross-linked polyethylene (XLPE) insulation that provides excellent cut-through and impact resistance. UL 3173 wire has a maximum voltage rating of 600V and has excellent oil and gasoline resistance. Allied Wire and Cable stocks a range of sizes from 22 American wire gauge through to 10 AWG. Wire sizes from 14 AWG and upwards meet the National Electrical Code (NEC) requirements for switchboard wires and carry an "SIS" mark. Smaller sizes between 18 AWG and 16 AWG have "Suitable for Switchboard Use" printed markings. This UL-recognized wire complies with the Canadian Standards Association Type CL1251 requirement as well as the IEEE 130 Class B motor lead specifications.
7 items
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73-18-16T$0.00 / 1000 FT- Approx LBS/MFT: 10.00
- AWG Size: 18
- Cond. Material: Tinned Copper
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73-16-26T$0.00 / 1000 FT
- Approx LBS/MFT: 13.00
- AWG Size: 16
- Cond. Material: Tinned Copper
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73-14-41T$0.00 / 1000 FT
- Approx LBS/MFT: 19.00
- AWG Size: 14
- Cond. Material: Tinned Copper
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73-12-65T$0.00 / 1000 FT
- Approx LBS/MFT: 27.00
- AWG Size: 12
- Cond. Material: Tinned Copper
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73-10-105T$0.00 / 1000 FT
- Approx LBS/MFT: 42.00
- AWG Size: 10
- Cond. Material: Tinned Copper
UL 3173 Hook-up Wire construction
Conductor
UL 3173 lead wire uses stranded conductors made up of multiple strands of 30 AWG tinned and soft annealed copper wire. Tinned copper wire has excellent solderability and crimping characteristics. Additionally, the tinned copper wire resists high-temperature oxidation and has an extended service life.
Insulation
The wire has extruded cross-linked polyethylene insulation with a minimum average thickness of 30 mils. XLPE insulation has a maximum temperature rating of 125 degrees Celsius and is a flame-retardant thermoset material that does not deform when heated. The wire has no jacket.
UL 3173 Wire Applications
Applications for UL 3173 wire include wiring of appliances, hook-up wire in transformers, coil leads, motor lead wires, high-temperature luminaires, electrical control panels, electronic equipment, and control panels. A secondary application for UL 3173 wires with a diameter of 14 AWG is as switchboard (SIS) wiring in terms of NEC Article 310, Table 310,104(A). Note, that in this application, the maximum allowable temperature is 90 C.
Similar Wires
UL 3173 wire has a maximum temperature rating of 125 C. Many sizes also meet the requirements for SIS wire for use in electrical switchboards according to NEC Article 310. SIS wires may have solid or stranded conductors and wire diameters between 4 AWG and 4 AWG. The maximum working temperature of SIS wire is 90°C
UL 3173 Wire Specifications
- Conductors: Soft annealed stranded tinned copper wire
- Insulation: Extruded XLPE semi-rigid PVC (SR-PVC) with a minimum average thickness of 30 mils (.030 inches)
- Voltage rating: 600 volts AC
- AWG size permitted by UL 3173: 26 AWG to 9 AWG
- Maximum temperature rating: 125°C
- Gasoline, solvent, and oil resistance: Excellent
- Moisture resistance: Good
- Insulation colors: Color-coded in 10 standard colors
- AWG 14 and above: Marked "SIS" for Switchboard application in terms of NEC Article 310
- AWG 18 to AWG 16: Marked "Suitable for Switchboard Use"
UL 3173 Wire Certifications
- UL 3173
- NEC Rated for SIS applications\
- CSA Type CL1251
- Restriction of Hazardous Substances (RoHS)-compliant
- IEEE 130 Class B motor lead
- Horizontal flame test
Contact our sales associates for further information regarding UL 3173 wire applications and for information on custom cables that meet UL 3173 specifications.