Re: Liability & responsibility of electrician?

Jul 06, 2009 31 Replies



>krw wrote:
>>
>> >>
>> >
>> >krw wrote:
>> >>
>> >> >> >>
>> >> >>> >> >
>> >> >>>> >> >>
>> >> >>>>> >> >>>
>> >> >>>>>> >> >>>>
>> >> >>>>>It is not regular practice to inform the owner, unless something is

found to


> >> >>>>>be wrong. Having 245v in the building is not normal, and there is a

lot of


> >> >>>>>equipment out there that does not have taps. Equipment without taps

could be


> >> >>>>>damaged by this higher than usual voltage.
>> >> >>>>
>> >> >>>>Nonsense. 245V = 240V + 2%. That's just not a big deal -- as long as

it's a


> >> >>>>nominal 240V supply. If the nominal supply is 208V, then yes, that's a

huge


> >> >>>>problem. But you have no idea what the supply in the building is

supposed to


> >> >>>>be, so you have no basis for saying that it's "not normal".
>> >> >>>>>
>> >> >>>>>It is the responsibility of the electrician to make sure the

equipment he is


> >> >>>>>wiring can correctly run on the power being supplied.
>> >> >>>>
>> >> >>>>No, it's not, unless there's a contract specifically requiring him to

do so.


> >> >>>>The electrician's responsibility is to install the circuits specified

by the


> >> >>>>person who hired him. The one who owns the equipment is responsible for
>> >> >>>>preparing the specs.
>> >> >>>>
>> >> >>>>> IMO the electrician
>> >> >>>>>did not do his job correctly.
>> >> >>>>
>> >> >>>>In what way?
>> >> >>>
>> >> >>>
>> >> >>> 220 to 245 is an 11.4% difference.
>> >> >>
>> >> >>220V service doesn't exist, DimBulb.
>> >> >
>> >> > Read the post,idiot. If there are no 220 volt service provisions, why
>> >> >are there "220 volt taps" on equipment?
>> >>
>> >> Irrelevant to the real world, DimBulb. 220V is so 1950s.
>> >
>> >
>> > Has anyone ever seen a 1950s CNC machine?
>>
>> Does a Jaquard loom count? Oh, 1950s, not 1750s. ;-)
>
>
> Did it have a $4000 controller board? ;-)

In 2009 dollars, quite likely.

found to

lot of

could be

as it's a

a huge

supposed to

equipment he is

to do so.

specified by the

for

Well, Zero bit processors were quite expensive.

You can\'t have a sense of humor, if you have no sense!

is found to

a lot of

taps could be

as it's a

that's a huge

supposed to

equipment he is

to do so.

specified by the

for

why

Jacquard looms are pretty impressive things to watch. ...and almost

300 years old. Not "zero bits" at all.

They operated from punched cards for the weave patterns, and had zero bits of computer processing power.

You can\'t have a sense of humor, if you have no sense!

They are CNC machines. CNC machines don't need to "process" anything.

Modern CNC is done under computer control. Punched paper tape was a pain in the ass, but it worked until computers became cheap enough to replace punched tape readers. It was a play on words.

You can\'t have a sense of humor, if you have no sense!

And they do NOT need to be Binary Digital, or Hexidecimal.

Sure, but the computer isn't much more than a (card/tape) reader.

Ok, but you could have said it wasn't run by a two-bit operating system.

The machines can store more commands, though.

With dimbulb in the thread? We would have had at least 100 of his mindless rants that there never were any two bit processors, and if it doesn't run Vista, bla, bla bla....

You can\'t have a sense of humor, if you have no sense!

Depends on your definition of binary. Certainly paper tape and octal computers (DECs) worked. OTOH, I can't think of an instance of an analog CNC machine.

Yes, they do. The 'run' (read process, idiot) a program. That IS processing.

krw Inscribed thus:

Don't forget the fairground organs ! They work on the same punched card system.

Best Regards: Baron.

No, it really doesn't.

They most certainly *are* computers.

Not really. A servo amp, per se, isn't programmable.

Nope.

Playing a recording is not "processing", DimBulb.

If it interprets instructions and performs tasks and functions based on those instructions, that is a program, and the operation of the machine while executing it, regardless of any simplificatio0n a little retarded twit like you comes up with, IS PROCESSING. It matters not where the instructions are derived or 'read' from, nor what they get 'read' into.

Even early CNC machines that had no computer whatsoever in them PROCESSED the program instructions, you total retard.

You lose, again... as usual.

Notice no comma between binary and digital - so "binary digital", not "binary", or "digital"

Analog CNC could be done with "voice coil" actuators with servo feedback. MUCH faster than servo-motor devices for low-power applications - which is why they have replaced servo motors for disk-drive head positioners and lazer focusing etc.

Bet the lazer focussing on a CNC laser cutter has been done "analog" by someone somewhere.

Go back to sleep, AlwaysWrong.

We all know you're illiterate, DimBulb. You don't have to prove it every day.

Wrong again, AlwaysWrong.

Of COURSE you can't. By definition the C and the N sort of preclude that. Unless you are willing to call what we USED to call "analog computers" computers these days. BUt then almost any servo amp IS one of those. Regardless the N in CNC still precludes it.

jk

a

Hell, a decent PLC can store acceleration and velocity parameters and apply them in real time. So can typical CNC machines, not to mention tool changes and many other things. Moreover many CNC machines support a variety of measurement tools as well.

You make no sense, then. Hexadecimal is a special case, or expression of binary. Paper tape is binary, at least in most senses.

I doubt that function is (user) programmable, so not in any way C*C.

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