Grizzly said that both the table saw and dust collector draw 12 amps each on
220. The question I have is - is it OK to run both items at the same time
off of the same circuit if I use 12/3 with ground Romex cable using a 20 amp
double breaker, or do I have to have each one on their own circuit? I heard
in reality that the circuit is only just drawing 12 amps when both are
running at the same time.
Another question I have for those of you who have the G0444Z table saw. The
saw comes with standard 57" rails which have a 30" ripping capacity. What
do you think about buying the model H5744 79" rails and legs, would that be
overkill? I would like to build an extension table & cabinet under the
right side of the saw.
Thank you all for your opinions.
You're trying to pull 24 amps off of a 20 amp circuit. The breaker will
trip. 220 uses both legs of power thats why you have a "double breaker".
If either leg exceeds 20 amps both legs open to ensure that the load is
de-engergized. If only one side opened you would still have 110 volts to
ground. You will need a larger breaker, but remember the breaker is there
to protect the downstream wires from overload. Ensure your breaker is sized
properly for the wires that you are running. I don't have my "Ugly's
Manual" (I got mine at HD, under $10) handy or I would give you the right
wire size to use.
Thanks for all your opinions. In the September edition of Wood Magazine on
page 97 second column there is an article about "Critical Questions about
Workshop Wiring" that says both could run on one 20 amp 240 volt circuit. I
was skeptical about it and thought I would put the question in this news
group and see what you all thought about it.
Thanks again for your responses.
Remember that when the motor(s) start up, they have a higher current
draw than when they are running. Also, IIRC, you shouldn't load your
circuit right up to the breaker capacity. I believe you should only go
up 80% of your breaker. But I'm no electrician, and this IS the 'net so
proceed with caution... Mark L.
You're only trying to draw 24 amps when the saw is at maximum load.
Most breakers have a little time leeway. The DC will probably draw
close to its rated load all the time. If you're doing a bunch of heavy
ripping, you might trip the breaker. Otherwise, not likely you'll
exceed the rating of the breaker in the real world. Give it a try. If
you're tripping the breaker with annoying frequency, run in the second
circuit to the saw.
What he said, but also you have to be sure not to start both at the same
time, or you will surely trip the breaker.
Another issue is voltage drop; if you have a long run you might not like the
Hell, put in 10 gauge and do it right.
BTW, why do you need /3? Does either tool require a neutral? Mine don't.
I have the G1029 and it doesn't actually pull 12 amps when conected to
hosts/ductwork/bags. In a typical setup with felt bags and 5 feet of
4" hose mine only uses about 7amps. With 6" ducting and a cartridge
filter it now pulls 9-9.5 amps, but still will never go above 10 if
the cover is on the blower.
As far as the long rails go... I would absolutly get them if you have
the space. I have the G1023 with the 30" rails and I wish I had the
extra length all the time. I recently moved my shop and have the
space, and I intend to get the 7' rails the next time I go to grizzly.
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