Author Topic: CO2 Laser Grounding Safety  (Read 3492 times)

Administrator

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CO2 Laser Grounding Safety
« on: February 20, 2017, 06:40:38 PM »
If anyone owns one of the 40/50/60/80/100 watt CO2 laser machines from China, this video is an absolute must see regarding electrical grounding safety.

Particularly interesting at the 9:30 point of the video regarding the bucket of water used for laser tube cooling!

10:50 point talks about safety glasses.

https://www.youtube.com/watch?v=6vztMvWUnmM
« Last Edit: February 20, 2017, 06:42:43 PM by Administrator »
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kibodwin

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Re: CO2 Laser Grounding Safety
« Reply #1 on: August 08, 2017, 11:28:21 PM »
I checked everything with the continuity tester on a multimeter. I also setup the extra ground wire just to be on the safe side.
I would also advise checking for chaffing on all the wiring especially the red 20000v line to the laser.
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Network23

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Re: CO2 Laser Grounding Safety
« Reply #2 on: November 15, 2017, 06:10:11 PM »
I asked about it here just below on grounding.   I asked on a K40 on Amazon questions, again I hear 2 things.   I think the only thing scaring me about the K40 is the grounding issue.  Some say don't use a 2nd ground because of it looping.  One person said "no the ground you need is for electrostatic discharge and it can really hurt it you get one"   In the thread I posted one person said that the guy doesn't know what he is talking about.    I have no clue on the matter.

 

ThothLoki

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Re: CO2 Laser Grounding Safety
« Reply #3 on: November 15, 2017, 06:27:29 PM »
I asked about it here just below on grounding.   I asked on a K40 on Amazon questions, again I hear 2 things.   I think the only thing scaring me about the K40 is the grounding issue.  Some say don't use a 2nd ground because of it looping.  One person said "no the ground you need is for electrostatic discharge and it can really hurt it you get one"   In the thread I posted one person said that the guy doesn't know what he is talking about.    I have no clue on the matter.

You want one ground. When you plug the machine into the wall, the third prong is ground (earth/house ground). What you need to look at in the machine is to make sure that all the bits and bobs inside the machine are properly grounded to earth ground. This is usually done in most electronic equipment by grounding to the metal chassis of the machine. The power supply that is connected to the mains power (and earth ground) has a metal chassis that is physically connected to the machine (k40 enclosure in this case) by screws. The outside chassis is then connected to mains ground.

The main point of grounding electrical equipment is to lessen the potential of the electricity. If you were to touch something that is ungrounded and there was an electrical current going through it, you would become the grounding rod and all of that electricity and current would go through your body. By having everything grounded, the current is a lot less. It is the difference between a small shock (or nothing) versus a bunch of current coursing through your organs and making you part of the electrical circuit.

Remember, electricity is like water. It goes to the path of lease resistance. Properly grounded, the copper wire has a lot less resistance than a human. If not grounded, electricity will go through you either way.

Some other info:
https://www.youtube.com/watch?v=63gDj2z0Wyg
https://en.wikipedia.org/wiki/Ground_(electricity)
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