It is usually from the LARGE amount of heat.
Electricity itself is not actually blue. The blue color that you may see in some electrical arcs or sparks is due to the presence of nitrogen and oxygen in the air, which emit a blue light when electricity passes through them.
The spark bug makes sparks
You should wear insulated gloves to protect yourself from electrical sparks.
To prevent electric sparks, ensure that electrical systems are properly grounded and that all connections are secure and insulated. Regularly inspect and maintain electrical equipment to identify and fix any wear or damage. Using surge protectors can also help mitigate voltage spikes that cause sparks. Additionally, avoid using electrical devices in damp or flammable environments where sparks could ignite materials.
sparks crew
blue
Insulated gloves protect you from electrical sparks by providing a barrier that prevents the electricity from passing through your body, reducing the risk of electric shock and injury.
Chew up wintogreen lifesavers in the dark with a mirror and look into it carefully. If you see little blue lights in the mirror, they are sparks
Sparks under the hood of a car are caused by shorts in the electrical system. A broken wire or loose connection is usually the culprit.
blue prints in electrical terms is a construction design
Blue.
This means that you have built up a large Static Electrical charge. The sparks are caused by you discharging this to ground, they are usually only visible in the dark, unless you have built up a very substantial Potential Difference, between you and the ground. You will not even notice the discharge of a PD less than about 20KV, which is more than enough to fry the chips in your computer.