Marine Grade Wire
UL BC-5W2 boat cable.
Tinned through every strand.UL BC-5W2 boat cable, tinned Class K
Approvals and origin
At a glance
- ULListing
- BC-5W2, file E321438
- CopperConductor
- Tinned Class K
- VoltageVoltage
- 600 V
- TempTemperature
- 105°C dry / 75°C wet
- SizesSizes
- 18 AWG to 6 AWG
- BuyBuy
- Spools on the online store
Boat cable, AUB, and DLO
The marine listing is boat cable. Arctic Ultraflex Blue for battery and ground. DLO for dockside power.
Boat cable, UL BC-5W2
Tinned Class K copper. 600 V. 105°C dry / 75°C wet. File E321438. 18 AWG to 6 AWG.
Specifications
Arctic Ultraflex Blue
Single conductor, 600 V, −67°F to 221°F. 18 AWG to 500 MCM. Battery and ground.
Specifications
DLO, 2000 V diesel locomotive cable
Listed for shipyards and dockside power. Tinned copper per AAR 589.
Specifications
Bilge, battery, and dock
Duplex red/black and red/yellow. Triplex black, white, and green. Round or flat.
Eye to eye and side-mount, built from Arctic Ultraflex Blue. Stocked sizes on the online store.
2000 V DLO for shipyards and dockside. Quoted by the foot, or built as a lead.
Round or flat. Duplex or triplex.
100 ft and 500 ft spools on the online store. Battery cables to a measured length through sales.
Frequently asked questions
What makes a wire marine grade?
UL 1426 BC-5W2, tinned Class K. File E321438.
What conductor colors does boat cable come in?
DC duplex is stocked red/black and red/yellow in 6, 8, 10, 12, 14, 16 and 18 AWG, which follows the ABYC color recommendations for positive and negative runs. AC triplex carries black, white and green conductors in 10, 12, 14 and 16 AWG. Both are 600 volts, rated 221°F (105°C) dry and 167°F (75°C) wet, on tinned Class K copper.
Round or flat boat cable?
Flat is built without fillers, which makes the jacket easier to remove and the wire easier to strip, and it stacks through a tight run. Round bends in every direction, which is what you want where the cable has to turn more than once. Both carry the same UL Listing and the same tinned Class K conductor, and both are stocked on 100 ft and 500 ft spools.
Which Polar Wire conductors are tinned?
Boat cable is tinned throughout and it is the marine listed line. Trailer cable is tinned Class K copper, with one exception that is bare, AUF-TC1014-7. Diesel locomotive cable is stranded tinned annealed copper per AAR 589. Arctic Ultraflex Blue is tinned from 18 through 10 AWG and bare at 8 AWG and larger, so in battery sizes it is the bare one.
Can I get a battery cable made to a measured length?
Yes, through two doors. A standard assembly goes through the cable configurator on the online store, which prices and checks out: pick the wire, the gauge, the length and a termination at each end. Anything with a drawing, a non-standard termination or a production quantity behind it goes to sales. Assemblies for retail customers carry no minimum, so one cable is a legitimate order.
Buy it, or have it quoted
Send the size, the length, and the profile. Polar Wire sells boat cable on spools, or builds the battery lead.