Colour of sparks. | on ElectriciansForums

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With regard to lightswitches, some people claim to see a blue spark while for others it's green.
Why?!
 
When I read the thread title I was a bit worried about the content.


Were you thinking everything may not be black and white?

Re. O.P, ask a group of people to describe the same colour, whether sparks or not and you'll get varying answers.

If it's blue sparks, it's probably directly viewing the arc.
If it's green it's filtered thro' the plastic in the switch.
 
Yes if you hit a bit of galvanized with the mig you get a nice greenish glow, mind you that will be distorted through the shield.
 

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