Subject: Re: tablesaws how much amperage?

From: "John Vreeland" <[email-masked]>
Date: Tue, 25 Mar 1997 11:10:46 -0700

My Delta runs fine on a 20 amp 115 volt circuit.  The motor says it is 14
amps, 1.5 HP.

ROBMURR <[email-masked]> wrote in article
<[email-masked]>...
> I want to purchase a Jet or Delta contractor saw. I need to know
> if either of these will run OK on a 20 amp curcuit. Nothing else is
> on this curcuit in the garage and I would like to use it or should I
> increase it to 30 amps?This would be on 115volts. My 100amp
> breaker box is full already...what is my least expensive and least
> extensive solution? thanks!
> 
>

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From: [email-masked] (ROBMURR)
Date: 27 Mar 1997 16:03:54 GMT

How about any JET table saw owners will they run on 20 amps 115v or did
you have to rewire to 220 volts??

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From: Keith Bays <[email-masked]>
Date: Sun, 30 Mar 1997 12:12:01 -0800

Christopher Raymond wrote:
> David Brooks wrote:
> > ROBMURR wrote:
> > Delta has a clever dual capacitor motor that develops more
> > HP for the watt than  the normal motor found on the jet.
> > If you wire up new power, a 20a breaker would be fine, i would however
> > wire it with 10g wire. the voltage drop on a normal 12 or 14 guage
> > wire is significant.
> > BTW most electrical panel manufacturers have dual breakers that
> > fit in one knockout. Pull out a single breaker and replace it
> > with a dual. do not confuse with a 220 dual that takes up two
> > knockouts.  ITE and SquareD make them fer sure. SquareD is about
> > $28 but is cheaper than new panel.
> > Sub panel idea is good but i wouldnt do it to get 2 more circuits.
> > db
> 
> It's a 1.5 hp motor, right?  A 20 amp circuit is fine, and 12 guage wire
> is plenty.  10 guage wire is pretty horrible to work with (stiff), and
> it won't fit under the screw heads on a normal outlet anyway.  Even if
> you could make it fit, it would probably violate the electric code to
> use 10 guage wire on a 110V outlet, which is designed for 12 or 14
> guage.
> 
> If you already have a (properly wired) dedicated 20 amp circuit, you're
> all set!
> 
> Chris
> 
> p.s.  I'm guessing here, but I think the dual capacitor motor is only
> helpful for startup - the caps are switched out of the circuit once the
> motor is up to speed.  Anybody know for sure?
I haven't seen the motor in question in person , but I do know that the
reason for a capacitor is for a quick surge of power to start the
motor.  Dual capacitors allow an extra boost to start the motors, but
after the motor is running the capacitors don't come into play.  If you
have had motors with bad capacitors they will humm but not start,
usually you can give them a boost by manually turning the arbor to start
them.

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From: [email-masked] (Tom Gauldin)
Date: Sun, 30 Mar 1997 19:35:42 GMT

>> > > extensive solution? thanks!

A dedicated 20 amp circuit would do just fine for the saw- providing that
there isn't too much line loss between your house and the garage.

Something to consider is to take out a couple (vertically) adjoining breakers
in the box and install a 60 amp 240 volt breaker in their place.  A short run
of #6 wire over to a new "load center" would give you a fresh supply of
breaker slots for expansion, including 240 volt circuits. 

A "load center" or "distribution panel" is just like the box you already have,
but doesn't have a MAIN breaker.  Instead, it acts as any other load or item,
but distributes the power instead of just consuming it.  They are very
inexpensive- such as about $20 for a ten breaker load center capable of
handling up to 100 amps.  Then, as a need arises for more tools, just break
out one or two of the cover knockouts and add a new breaker.

Tom
Tom Gauldin           Here's to the land of the longleaf pine,
Raleigh NC             The Summerland,where the sun doth shine.
fax 919-676-1404   Where the weak grow strong,and the strong grow great,
                               Here's to Downhome,the Old North State.