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Leaving Lathe Plugge In (Read 226 times)
 
Daniel Hayes
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Leaving Lathe Plugge In
Jun 26th, 2020 at 3:31pm
 
Do you really need to leave a variable speed lathe unplugged when not used for a few days? I've heard it is better for the inverter but what is the bottom line?
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Clark Pittman
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Re: Leaving Lathe Plugge In
Reply #1 - Jun 26th, 2020 at 4:09pm
 
Hi Daniel,
I also have a Laguna Revo 1836 which I always unplug when not using but probably for a different reason than you suggested.
We have in the past had any number of problems when the power goes off and has surges when coming back on.
(We're near an industrial area with large inductive electrical loads.)
Lost several TV's and other electrical appliances because of the surge voltages.
Additionally, we get our fair share of lightning storms.
UPS's on all the computers, monitors, TV's has minimized my fear but I'm afraid I can't see getting a UPS large enough for the lathe so it gets unplugged when not in use. Pretty easy remedy.



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Robert Hayward
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Re: Leaving Lathe Plugge In
Reply #2 - Jun 26th, 2020 at 4:33pm
 
I have three levels of surge protection. First stage inside the power meter can installed by the electric company. Second stage is inside my distribution panel or breaker box and the third is at the outlet box on the wall where my 3520b plugs into.

With that said, I always unplug the lathe when I am done turning. We have a huge amount of lightning in my area of Florida.
Bob
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« Last Edit: Jun 26th, 2020 at 4:34pm by Robert Hayward »  
 
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Paul Haus
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Re: Leaving Lathe Plugge In
Reply #3 - Jun 26th, 2020 at 7:44pm
 
I also unplug my tools as noted for most of the same reasons.  One more is I have grandkids, and though they have not found their way into my shop my youngest daughter did once and figured out how to start my table saw.  It could have been much worse than it was, a saw running unattended but anything is possible.
Worst case, can you put a main cutoff on the power to the shop?
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Daniel Hayes
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Re: Leaving Lathe Plugge In
Reply #4 - Jun 27th, 2020 at 9:25am
 
I thought I had read in the instructions to unplug when not in use but I can't find it. I just built a new shop and had the outlet put at mid wall level right behind the lathe so it's easy to unplug. I leave a lot plugged in though.  Air filter, dust collector, band saw. Other stuff only plugged in when I use it. New house so I'm not familiar with the frequency of storms/power interuptions.
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Bill Moschler
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Re: Leaving Lathe Plugge In
Reply #5 - Jun 27th, 2020 at 4:37pm
 
Got all worried about leaving it plugged in.  Then realized I do not have any electronices.  I have the belt drive Nova.  Guess I will not have to run out to the shop and un plug it after all.  I do keep the table saw and jointer and planer  unplugged for safety.  I want to be sure I am ready when they go.
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Ron Sardo
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Re: Leaving Lathe Plugge In
Reply #6 - Jun 28th, 2020 at 7:11am
 
Always unplug the lathe

Clark Pittman wrote on Jun 26th, 2020 at 4:09pm:
UPS's on all the computers, monitors, TV's

Smiley I also have one on the refrigerator, came in handy once
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Glenn Jacobs
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Re: Leaving Lathe Plugge In
Reply #7 - Jun 28th, 2020 at 11:09am
 
Is it worth having a whole house surge protector?

Glenn J.
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Ed Weber
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Re: Leaving Lathe Plugge In
Reply #8 - Jun 28th, 2020 at 11:25am
 
Surge protectors on everything is a good idea.
As far as a whole house surge protector, they come is a very wide range of price points and protection levels. Good idea, yes but better to call an electrician IMO.
I have my lathe plugged into a surge protector which I switch off when I'm done. It also turns off the task lights on the lathe so I don't forget. When leaving the shop for the day, I flick off the ceiling lights and look to see if I forgot any task lights i use, like the lathe, bandsaw, router and so on.
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Rick Caron
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Re: Leaving Lathe Plugge In
Reply #9 - Jun 30th, 2020 at 2:50pm
 
I never leave my Nova dvr plugged in when not in use    That's the last  thing i want to go out   in a power surge  A tv can be replaced  cheaper    than a lathe
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Louie Powell
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Re: Leaving Lathe Plugge In
Reply #10 - Jun 30th, 2020 at 6:24pm
 
I keep my lathe plugged in, but - - -

I have a set of receptacles near my lathe that are all controlled by a master switch.  These receptacles feed the lathe, the task lighting around the lathe, a fan mounted overhead to blow dust away from me, an angle drill for sanding, etc.  When I'm not working, I used the master switch to turn off the power to all of those receptacles.  So in effect, while my lathe is plugged in continuously, in fact it is disconnected from the electric supply unless I am actually working. 

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Louie
 
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Jeff Vanden Boogart
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Re: Leaving Lathe Plugge In
Reply #11 - Jul 1st, 2020 at 10:54am
 
My PM is wired into a disconnect switch...works pretty good.
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Louie Powell
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Re: Leaving Lathe Plugge In
Reply #12 - Jul 1st, 2020 at 11:09am
 
Ed Weber wrote on Jun 28th, 2020 at 11:25am:
- - -
I have my lathe plugged into a surge protector which I switch off when I'm done. It also turns off the task lights on the lathe so I don't forget. When leaving the shop for the day, I flick off the ceiling lights and look to see if I forgot any task lights i use, like the lathe, bandsaw, router and so on.



At one point, I considered having my lathe plugged into a receptacle that was switched along with the overall lighting in my shop - so that when I left the shop at the end of a session and turned off the lights*, I would be certain that the lathe was also disconnected.  But then I realized that would create a safety issue - suppose I was in the middle of turning something when something went wrong that caused the circuit to trip.  That would have meant that the lights went out while the lathe was still spinning.  As a general safety principle, lights and power tools should always be on different circuits.

*  In our house, I always turn off the lights when I leave a room.  That cannot be said of other residents in the home - - -
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Louie
 
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Ed Weber
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Re: Leaving Lathe Plugge In
Reply #13 - Jul 1st, 2020 at 12:32pm
 
Our setups sound similar.

When SWMBO needs to get my attention, she flicks the ceiling lights, no effect to me at the machines.
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Robert Hayward
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Re: Leaving Lathe Plugge In
Reply #14 - Jul 1st, 2020 at 4:53pm
 
Louie Powell wrote on Jun 30th, 2020 at 6:24pm:
So in effect, while my lathe is plugged in continuously, in fact it is disconnected from the electric supply unless I am actually working.


Most likely not completely though. With the switch off your machine is still connected to the neutral and or ground wire. Both of these wires are very capable of transferring a surge current. If your wiring is like ours in this area the neutral and ground are bonded in the main circuit panel.
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