2:04 - perfect spot for a Microwave :P More seriously, thank you for the help, I've had some problems with my laser stopping mid burn- always during a fill and I am pretty sure it's been building up static electricity with the higher movement speeds- cuts absolutely never fail since I believe the slower movement doesn't build up as much charge so I've been looking into how to ground my laser properly. This helps a lot- thanks for the vid, I hope grounding my machine properly fixes the problem :D If grounding doesn't work my next step is to get a battery backup just in case I get tiny intermittent brownouts that interrupt the connection- that way I'll get garaunteed clean power if the wall power isn't totally clean. I've isolated the USB connection so I'm fairly certain it's not that- got all my wires wrapped in aluminum foil so there should be zero interruptions due to other cables arcing. Thanks for the explanation, it is well explained!
As a licensed Master Electrician I approve of this message. You are spot on in all that you are saying. The NEC states that your ground rod must have at least 8' in contact with the ground and have less that a certain resistance to earth. If not a second ground rod must be installed. A little piece of pipe with a small gauge wire won't do anything. PS the ground in a residential application is mainly for the protection of human life
I know this post was 2 years ago but someone who know can chime in. So, a grounding rod must have at least 8 feet of ground "contact" and a certain resistance. What is the allowed resistance? As for the 8 feet ground contact, is there a difference in the orientation of the contact? Does it have to be 8 feet deep or will a ground rod 8 feet long buried 2 feet deep suffice?
@@archertrendz3231 There has to be 8 foot of earth contacting the ground rod, if you can't achieve that due to rocks and such you can use a second rod to achieve the 8 foot.
A side note you would be more effective by feeding your laser cutter from a GFCI that will guarantee that any current leakage that may occur will be stopped if over the level that is safe for human contact.
Nice video. I'm getting my new new 60W setup. I checked the gound lug inside. It is jumpered directly to the ground lead of the power connector, but I noticed the crump lugs used to attach the wires to the inner post of the ground lug were crimped and didn't look overly secure to me, so I soldered the lugs to the leads. Should be good to go now.
I have an older home wiring that only has 2 wire electrical. If anyone has an older home, they might look into that because when we moved in the first thing we did was change the electrical outlets to a 3 prong just so we could plug in anything we had that had a three prong plug. There is no actual connection to that third prong. If we had moved in and the previous owners has already changed the outlets, with my level of knowledge of home electrical at the time. I may have not even thought about there not being an actual connection to the ground. I installed a ground rod for my table saw because of it being entirely metal. I do not have one of these k40's yet,. but I am about to purchase one. So I will definitely hook that ground up to my grounding rod.
So what's the options for us because I am on the same boat? I also changed the outlets to 3 pronged for the ease of pluging in other items. The previous outlets had only 2 wires so with my new outlets there is nothing connected to the ground.
I know this is 2 years late but I thought someone could benefit from this information. During one of my refresher code classed I asked the inspector teaching the class about replacing a two prong outlet with a 3 prong outlet and here is what he told me. If an electrical inspector were to check your house and find out that you had replaced the outlets he would require that you upgrade the wiring the and no you wouldn't be allowed to go back to the 2 prong receptacles. In the case of needing to add a outlet in a situation without the ground wire it is (or at least was) allowed to use a GFCI receptacle. In the case of the laser I'm not certain but I think the ground wire is also used to dissipate static charges that can build up due to the high voltages involved.
I think as long as you have a good earth connection through the power socket you are good. It seems it is only worth adding a wire to the ground lug if you have a 6ft piece of metal dug into the ground. So if you could get good earth from somewhere else it would be ok to connect it along with the good power lead earth(just in case there is a problem with the power lead earth.)
Thanks for the video… and this might be the dumbest question in the world… I have the same laser… when I plug the three prong outlet into the wall… which I’m assuming is grounded…. Why is there an additional ground terminal? I’m out of my Depth with electrical and apologize if this is an obvious answer. Thanks for the video
I'm curious if you could give me a good reference on wiring up a 220v 150w Chinese laser. I have a sub panel as well in the shop. I have mine wired with the red (hot), black (hot) and White (Neutral). should i be using the ground instead of white (neutral)?
I’ve watched this video a few times and I’m still trying to figure one thing out. Once you know the fitting on the machine case has good connections and everything to that lug. How do you wire that lug into your ground port at the wall outlet?
Basically, the Lug is there for China. In the USA with a correctly wired house (three prong plug ) you don't need it. If you have a old house with only two prong outlets then you need to hook it up if your wish for safety.
If you're talking about connecting to the third neutral prong on a plugin- that should work. There are some smalle male/female adapters for extension cords or anything really that have a little metal prong sticking down from below the grounding wire that has a hole in it- this is for adding extra grounding. You can't post lynks here on YT but if you look up 'ETL Listed Grounding Outlet Adapter' (I can't mention that Rainforest Company that starts with an 'A' which sells most everything/and is big into delivery as well now- YT removes the comment if I say the name) the first thing that pops up should show you what I'm talking about. Hope that helps even though it's 10 Months later, maybe it'll help someone else who reads the comment though ;D
Thanks for the information! So basically, trash the additional ground connections and use the plugins ground? Why would the manufacturer even make an additional ground. Just in case there's a short somewhere in the original?
Bravo Technologies great video. So no need for extra grounding then ? Just the normal cable with 3 pins (being the round one,ground)? Just triple checking
Thanks a lot for your response! I dont know a lot about electricals. I do own a multimeter, in what mode should I use it to see if my power outlet has low resistance. Thanks! I will post a video once I start putting things together. I'm also getting Cohesion 3d mini this week!! did you install yours?
