Solder will conduct electricity, so is not an insulator.
A Conductor, SOLDER IS NOT AN INSULATOR. The most common types of solder are made of tin and lead. Another type is silver solder. All of the materials used are metals and are good conductors of both heat and electricity. If you solder something you would notice if you ever held a wire (without protection) while applying solder to it your finger would probably receive a burn (speaking from experience).
Solder the wire.
Wire can be either an insulator or a conductor, depending on its material and properties. Copper wire, for example, is a good conductor of electricity, while rubber-coated wire is used as an insulator to protect against electric shocks.
insulator
To solder wire effectively and safely, start by cleaning the wire and the soldering iron tip. Then, heat the wire and apply solder to create a strong connection. Be sure to work in a well-ventilated area and wear safety goggles to protect your eyes from splattering solder. Finally, let the soldered joint cool before handling it.
That wire could use a better insulator.
It is a reference for the preparation for soldering a stranded wire so you get a good joint. You twist the strands together, heat the wire with a soldering iron or gun and then apply a small amount of solder on the tip of the wire and it melts into the strands. Then you can solder the wire to another like wire or to a terminal or whatever. You basically reheat the wire to make connection and can add more solder as needed.Additional informationTinning is also useful if the wire is to be put in a "screw lug". The term "tinning" comes from the fact that older solder contains lead and tin. Some of the newer solder is supposed to be lead free.
To solder wire to metal effectively, follow these steps: Clean the metal surface with sandpaper or a wire brush to remove any dirt or oxidation. Apply flux to the metal surface to help the solder adhere. Heat the metal with a soldering iron until it is hot enough to melt the solder. Touch the solder to the heated metal surface and let it flow into the joint. Hold the wire in place until the solder cools and solidifies. Inspect the joint to ensure it is secure and properly soldered.
Another name for solder is "soldering wire" or "soldering material."
pre tinning make it easier to solder wire because the solder is already " stuck" to the wire. and less solder will be needed to join the wire. if you watch the solder under a magnifier while tinning, you will notice the solder does not flow and "stick" until proper heat and flux ar applied. this heat usually is more than required to melt the solder because it takes mor heat to heat up the wire due to higher density. after tinning, less heat is required to melt the solder, and enough flux is usually left from tinning to quickly join the wire to the desired material provided the material is also tinned. this reduces cold solder and provides for a more relible connection. To tin the wire first is to cover the end of the wire with a layer of solder before you put it thru the hole in the PCB that will give you insurance of a proper electrical contact else you will put a heap of solder on the PCB without a proper contact with the wire itself what is called a dry joint that go for un tinted copper wire only normally all electronic component pins is factory tinted
A good insulator would be rubber or plastic.
it is a conducter