On 2013-12-07, Gunner Asch wrote:
On Sat, 07 Dec 2013 13:21:49 -0600, Ignoramus31823
wrote:

On 2013-12-07, Gunner Asch wrote:
On Fri, 06 Dec 2013 20:06:57 -0600, Ignoramus5722
wrote:

On 2013-12-07, Pete C. wrote:
Add compressor capacity, rather than tank volume, presuming you have a
reasonable size tank now. Set the pressure switch for the second
compressor to come on as say 10 psi below the first's cut in pressure so
it will only come on when the first is unable to keep up with the
demand.

Pete, I would like to explore my idea in the original post, for now. I
do not really want to get more compressors, for now. Even though it is
tempting to upgrade,I just bought a 15HP Quincy 370 compressor. My
shop guy wants me to upgrade my 10HP quincy to this one.But I do not
want the hassle of upgrading the wiring and dealing with a messy
wiring duct.

i
Whats your current wire size? How far is the run?


40 feet, I believe 10 gauge, 30 amp breaker, 220v

i

Right at the border for a intermitant load. Drop it to 8 ga and put in
a 60 amp breaker and you are golden. Im sure you can come up with
120' of 8 gage while you are closing down factories.

I have about 1200 lbs of cables. But my problem is that the wire going
to the compressor, goes through a 48 year old wire duct. I am afraid
of messing with it. I do not even know how I am going to figure it out.

Perhaps I should start with a clean slate, and get a new 50A circuit
to the compressor, with a real neutral, etc, through a separate
conduit. And then upgrade the compressor from my 10HP QUincy to the
15HP quincy that I bought on auction. My original plan was to sell the
15 HP compressor. But maybe I should keep it and sell the 10HP inspead.

i