Is "Power Supply Off" necessary?

[Tom Albrecht]

To the best of my knowledge, many modern lathes have a main power supply switch in addition to the basic "Forward, Reverse, & Stop" switches.
Is it important, recommended, or necessary to shut down the main power supply at the end of the day?

 

[Richard Coers]

Depends on if there is a VFD and how it’s wired. You don’t want them powered up 24/7

 

[Steve Tiedman]

I not only kill that main power switch on both lathes, I have power kill switches wired in at the wall receptacles. I never know when something sneaky is going to come down the mains from the pole outside.

 

[Richard Coers]

I not only kill that main power switch on both lathes, I have power kill switches wired in at the wall receptacles. I never know when something sneaky is going to come down the mains from the pole outside.

If you ever see ball lightning go across the floor inside your home, you wouldn’t even trust the kill switch.

 

[Tom Albrecht]

'Nough said! Consider it done here.

 

[Steve Tiedman]

If you ever see ball lightning go across the floor inside your home, you wouldn’t even trust the kill switch.

Phew! The next two phone calls would be:
1- 911.
2- insurance company!
Assuming I live to tell about it!

 

[Ric Taylor]

If you ever see ball lightning go across the floor inside your home, you wouldn’t even trust the kill switch.

Family lore is that ball lightning rolled in an open door, across the floor and killed my great grandfather sitting in his chair. I never have been able to confirm the story, but the elders always told the story.

 

[Gabriel Hoff]

To the best of my knowledge, many modern lathes have a main power supply switch in addition to the basic "Forward, Reverse, & Stop" switches.
Is it important, recommended, or necessary to shut down the main power supply at the end of the day?

I just unplug at the end of the day.

 

[john lucas]

I always unplug at the end of the day.

 

[James Seyfried]

Don't forget to unplug your compressor, dust collector, bandsaws, table saw, grinders, jointer, miter saw, shop vac, planer, battery chargers, tv, and drum sander!

Seriously though what is the criteria for what to unplug? I do have some tools that have electronics that stay on when switched off, on outlets that I switch off. I know that doesn't eliminate lightning damage, but I do have insurance.

 

[Tom Albrecht]

Don't forget to unplug your compressor, dust collector, bandsaws, table saw, grinders, jointer, miter saw, shop vac, planer, battery chargers, tv, and drum sander!

Seriously though what is the criteria for what to unplug? I do have some tools that have electronics that stay on when switched off, on outlets that I switch off. I know that doesn't eliminate lightning damage, but I do have insurance.

Personally, my concern comes from protecting the VFD system, which I don't have in any of the other tools you mentioned.

 

[Jerry Bennett]

By leaving the power on, the solid state electronics is vulnerable to spikes on the line unless you have adequate protection.