See wire size chart on page 5 consider the overlap between the tube and the cable insulation heat evenly around the tube if using a flame use a diffuser and keep it moving.
Heat shrink tubing wire size chart.
Pick the right diameter.
Heat shrinkable tubing is primarily available in 2 1 or 3 1 shrink ratios meaning the tubing has been expanded to twice or three times its fully recovered size.
There are many different sizes of shrink tubing.
Wrap around heat shrink tubing protect wire and cable without disconnecting them from an assembly.
Size selection fluorotherm recommends size selection of an as supplied or expanded id sufficient to slip over the object to be covered so as to have the after shrinkage id smaller than the smallest dimension of the part.
For 16 gauge wire 3mm heat shrink tubing with a 2 1 shrink ratio and a 118 inch diameter is recommended.
A different shrink ratio on each end allows this tubing to fit over cable assemblies and wire harnesses with large connections or around connectors with a 90 elbow.
Start further away from the tube and move closer gradually.
3mm with a 2 1 shrink.
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While a heat gun is the proper way to shrink the tubing if you don t mind scuffing up your soldering iron the barrel can be held close by to slowly shrink the tubing too about wire sizes.
The shrink ratio will define what size wire the tube will fit on.
The recommended heat shrink tubing size for 18 gauge wire is the same as that for 16 gauge wire.
What are the main considerations when installing heat shrink.
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This has a 2 1 shrink ratio at about 90 125 degrees c.
Generally the tubing should be cut 4 to 10 longer than the overall length of the object as axial longitudinal shrinkage occurs.
Below are tables listing awg gauge wire sizes in addition to the thickness of common insulated.
The wall thickness is also a consideration when choosing shrink tubing.
The recommended heat shrink tubing size for 14 gauge wire is the same as that for 12 5mm with a 198 inch diameter.