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heavy hex gauge
en francais? l? il semble? que? vous me comprenez? mieux en trasuisant j'aie vue? il me? semble ici? cette instrument? mais? il est f ait pour les grande nut existe t'il pour les plus petites? grandeur en plus j'aie due? prendre une capture d 'ecran? pour imprimer? le tableau en plus? il y a plusieurs? tableau de ce genre? ici corespondance? metrique impérial? etc il serait interessant? de reunir? tous? cela? sous? forme? de ficher? imprimable?? jacques? 47 71 |
Re: SPEAKIN BOUT FUSES
开云体育Just a point of anecdotal data, ?I had that very thing done to my house when my ancient water line broke (underneath my concrete driveway, on July 4th weekend of course!) it was replaced with PEX. The tubing they used has a copper ground wire bonded to it just for that purpose, since connecting to the water line for the ground is so common in older houses.?It may well be part of the code where I live to use that.?
--? Bruce Johnson "Wherever you go, there you are." B. Banzai, PhD |
Re: SPEAKIN BOUT FUSES
Excellent information.
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Another potential point for a break in the grounding of a water pipe is when/where the pipe enters and leaves a water heater. To reduce corrosion, water heaters often employ dielectric fittings where the water line enters and leaves the heater. Thus, the potential grounding of the hot water line exiting the heater becomes electrically isolated from the cold water line entering the heater. While the hot water line should never be used for a ground connection, there is always someone who thinks this would be OK. Jerry F. -----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Charles Sent: Tuesday, January 02, 2024 5:36 PM To: [email protected] Subject: Re: [7x12MiniLathe] SPEAKIN BOUT FUSES There are a couple of types of breakers in a nutshell thermal trip and magnetic trip. Both have specific purposes and characteristics. They do not however have arc over like fuses do. This is VERY carefully designed into them prevent this very type of failure. They do extreme testing during manufacturing process to insure this cannot happen. The stress testing for arc far exceeds its rating. I have worked as a Controls Engineer for over 35 years and actually worked for Schneider Electric at their plant that makes breakers I can tell you it would amaze you how much they put them through in testing. It is scary to watch sometimes! Also you always want to break the hot side of a circuit NEVER break the neutral. That is a violation of both NEC,CE, and NFPA regulations along with UL. You also NEVER should tie a ground wire from anything to a water pipe. I know they used to do this. BUT it is no longer allowed with good reason. THINK about it. Someone comes along and replaces a section of your metal pipe with plastic. This just happens to be between your ground connection and actual point the pipes leave the building and make contact with ground. You just lost your ground. That is WHY it is NOT allowed. Same as you always tie one side of the secondary single phase step-down transformer to chassis ground UN-fused and use it as neutral. If you put in sub panels AKA secondary panels a ground rod may be required depending on the circumstances at the panel. Better safe than sorry even if its not. It is never too expensive to be safe. Installing ground fault breakers in a panel are cheaper than plugs at point of use and protect the entire load of that circuit. You can even get the ones that protect for arc flash too but they can be a pain with larger electric motors especially brush types. The sometimes see the motor starting as a fault and will trip. But you can use a dedicated circuit if all else fails for your older compressors and things like that. ALWAYS REMEMBER MORE PEOPLE ARE KILLED BY HOUSEHOLD 120VAC THAN BY 480 VAC 3 PHASE EVERY YEAR. |
Re: SPEAKIN BOUT FUSES
That is all correct info including what the codes say from the other Charles ("Cowboy1764).? Also, if using multiphase, breakers must be ganged so that if one trips, they all go off.? Of course, if using fuses (not recommended for that, perhaps no longer allowed, I'm not sure, I'm out of date) you don't get that protection.? I doubt anybody is running their mini-lathe on 3 phase,? But your home is very likely a 120/240 service with a ganged set of breakers for the mains power coming to the house.? (If not, you should probably have somebody fix that.) Charles E. "Chuck" Kinzer
On Tuesday, January 2, 2024 at 05:35:56 PM PST, Charles <cowboy1764@...> wrote:
There are a couple of types of breakers in a nutshell thermal trip and magnetic trip. Both have specific purposes and characteristics. They do not however have arc over like fuses do. This is VERY carefully designed into them prevent this very type of failure. They do extreme testing during manufacturing process to insure this cannot happen. The stress testing for arc far exceeds its rating. I have worked as a Controls Engineer for over 35 years and actually worked for Schneider Electric at their plant that makes breakers I can tell you it would amaze you how much they put them through in testing. It is scary to watch sometimes! Also you always want to break the hot side of a circuit NEVER break the neutral. That is a violation of both NEC,CE, and NFPA regulations along with UL. You also NEVER should tie a ground wire from anything to a water pipe. I know they used to do this. BUT it is no longer allowed with good reason. THINK about it. Someone comes along and replaces a section of your metal pipe with plastic. This just happens to be between your ground connection and actual point the pipes leave the building and make contact with ground. You just lost your ground. That is WHY it is NOT allowed.? Same as you always tie one side of the secondary single phase step-down transformer to chassis ground UN-fused and use it as neutral. If you put in sub panels AKA secondary panels a ground rod may be required depending on the circumstances at the panel. Better safe than sorry even if its not. It is never too expensive to be safe. Installing ground fault breakers in a panel are cheaper than plugs at point of use and protect the entire load of that circuit. You can even get the ones that protect for arc flash too but they can be a pain with larger electric motors especially brush types. The sometimes see the motor starting as a fault and will trip. But you can use a dedicated circuit if all else fails for your older compressors and things like that. ALWAYS REMEMBER MORE PEOPLE ARE KILLED BY HOUSEHOLD 120VAC THAN BY 480 VAC 3 PHASE EVERY YEAR. |
Re: SPEAKIN BOUT FUSES
There are a couple of types of breakers in a nutshell thermal trip and magnetic trip.
Both have specific purposes and characteristics. They do not however have arc over like fuses do. This is VERY carefully designed into them prevent this very type of failure. They do extreme testing during manufacturing process to insure this cannot happen. The stress testing for arc far exceeds its rating. I have worked as a Controls Engineer for over 35 years and actually worked for Schneider Electric at their plant that makes breakers I can tell you it would amaze you how much they put them through in testing. It is scary to watch sometimes! Also you always want to break the hot side of a circuit NEVER break the neutral. That is a violation of both NEC,CE, and NFPA regulations along with UL. You also NEVER should tie a ground wire from anything to a water pipe. I know they used to do this. BUT it is no longer allowed with good reason. THINK about it. Someone comes along and replaces a section of your metal pipe with plastic. This just happens to be between your ground connection and actual point the pipes leave the building and make contact with ground. You just lost your ground. That is WHY it is NOT allowed.? Same as you always tie one side of the secondary single phase step-down transformer to chassis ground UN-fused and use it as neutral. If you put in sub panels AKA secondary panels a ground rod may be required depending on the circumstances at the panel. Better safe than sorry even if its not. It is never too expensive to be safe. Installing ground fault breakers in a panel are cheaper than plugs at point of use and protect the entire load of that circuit. You can even get the ones that protect for arc flash too but they can be a pain with larger electric motors especially brush types. The sometimes see the motor starting as a fault and will trip. But you can use a dedicated circuit if all else fails for your older compressors and things like that. ALWAYS REMEMBER MORE PEOPLE ARE KILLED BY HOUSEHOLD 120VAC THAN BY 480 VAC 3 PHASE EVERY YEAR. |
Re: Free-standing Splashguard?
开云体育Dear Dave,Just a thought. I enlarged the splash guard, moving it both further back and extending it slightly, by using part of the case from an old desktop PC case. I also made mine easier to remove. L shaped slots. (Similar metal thickness.) It might be worth considering that route. Fortunately for me, the metal PC cover was a very good match for the Chester(UK) 7 x 12 colours at that time.? Regards, David (UK)? On 2 Jan 2024, at 21:40, davesmith1800 <davesmith1@...> wrote:
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Re: SPEAKIN BOUT FUSES
Ah -
Mehdi- wondered what he was up to...? Looks like he figured out how to monetize his antics... On Tue, Jan 2, 2024 at 12:50?PM Adam Faris via <adam.faris=[email protected]> wrote: The specification states that these breakers are 250 VAC or 32 VDC rated.? What does this voltage mean???It means that within the listed voltages, the breaker or fuse will create a open circuit fast enough that's likely to protect the circuit.? Under very high voltage, an arc can form that jumps the gap. On YouTube, a content creator named Electoboom, just demonstrated this behavior.? --
Buffalo John |
Re: SPEAKIN BOUT FUSES
The specification states that these breakers are 250 VAC or 32 VDC rated.? What does this voltage mean???It means that within the listed voltages, the breaker or fuse will create a open circuit fast enough that's likely to protect the circuit. ?Under very high voltage, an arc can form that jumps the gap. On YouTube, a content creator named Electoboom, just demonstrated this behavior.? |
Re: machining in a small shop
I am, thinking of putting the motor up! Of course I probable will not get beyond the thinking stage. It was much easier?to understand your post thanks to Google translate. Ralph On Mon, Jan 1, 2024 at 9:53?PM Jacques Savard <jacquessavard@...> wrote:
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Re: Free-standing Splashguard?
开云体育??? ??? Make? one like yer talkin about in cardboard & see
how it works , they if it's needs changes use more cardboard til
ya find what works for ya , At that stage then its time for the
one ya want to keep . Like mentioned baking sheets/pans are a
great start . animal On 1/2/24 5:42 AM, CBJessee-N4SRN
wrote:
The splashguard on my 7x16 is always getting in the way. It seems a free-standing splashguard 18" wide and 6" higher than the top of the chuck would suffice. Pretty much just a giant sheetmetal bookend. |
Re: Grizzly is doing better - I hope!!!
开云体育??? ??? My store in Reno did honor the cheaper online price if ya brought the online add . Can't say if they still do , the problem with most HF's is they change managers like most people change their underwear . animal On 1/1/24 3:24 PM, Charles Kinzer
wrote:
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Re: Free-standing Splashguard?
A road sign could great but it is not yours.
I have used a old real estate signs had my old phone number. But most would just walk around and take one pick one again not there's.? There is trash day for materials? which may or not be legal. No one wants spend money on a lawyer for $5.00 of materials. Dave? |
Re: Free-standing Splashguard?
开云体育Thanks Jaques! Using the translate option in my mail client makes it far easier to understand your posts!The only issue with using magnets to pick up the swarf is that aluminum and brass (as well as stainless steel aren’t magnetic :-) Using the plastic bag is a great idea; in fact I have a magnet stuck in a Ziplock on my bench for just that reason! It’s also really useful for cleaning up on the bench in general after cutting, filing or drilling stock, too. I have sometimes considered making some sort of enclosure for the magnets like this:? Only 5-6” long to use as a ‘bench sweeper’.? I got one of these a bunch of years ago when they re-roofed my house, even after they claimed to have cleaned it ?all up, I probably picked up a couple pounds of roofing nails and other detritus around the house.?
--?
Bruce Johnson The less a man knows about how sausages and laws are made, the easier it is to steal his vote and give him botulism. |
Re: Free-standing Splashguard?
en francais? apparamment? je suis plus facile a comprendre
je? suis? retraite? de l electronic? alors? jaie? des tedance a trouver? des soluetion? avec? de l elecronique pour? ramasser? les? copeaux? de metals? du tour? jutilise? des? aimants? tres? puissant? que? je trouve? dans de vieux? disque? dur? d ordi? type colenne en fait? vous demonté? le? hard? disk? ?et? vous recuperé? les aimants? des bras? de lecture? un peut? difficile?? mais?? comme? ont? tous demolir? ca facilite? les chose? attention? ces? aimants? sont? tres puissant? et? si il se colle? ensemble? et que vos? doigts? osnt? dans le? chemin? vous allez? avoir? des problemes il? sont? DONC? GRATUIUT et puissants?? alors? mettez? en beaucoup? tous prest? de la? xone? de coupe?? BASTA lus? rien a ramasser une prcoption? enlevoppés? les? dans? un sac? de plastic?? ca facilite? le nettoyage bon? bricolage jack 47 71 quebec?? |
Re: Free-standing Splashguard?
Make friends with a city streets employee,Aluminum highway road sign matl. makes the grade also, .074 thick? cuts on a table saw
In a message dated 1/2/2024 8:13:25 AM Pacific Standard Time, ckinzer@... writes: ?
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