compressor wiring question with pictures

[some zilch]

heres my new compressor, given to me; powerex/CH, 220v
http://i176.photobucket.com/albums/w172/super-trucker/HPIM0681.jpg


I have three wires coming out of the motor, 2 for power, and one had a two prong spade connector on it.
http://i176.photobucket.com/albums/w172/super-trucker/HPIM0683.jpg


i have two wires coming out of the pressure switch, one with and one without that same two prong spade connector. the wires out of the pressure switch were smaller gauge than those out of the motor.
http://i176.photobucket.com/albums/w172/super-trucker/HPIM0684.jpg

If i wire the motor right into the existing compressor wiring that is already there in the wall, the motor starts right up and spins the pump when i throw the breaker on.

I am assuming i am missing some sort of juntion box for the power coming in from the wall to join the pressure switch, and then for the pressure switch to control the motor on/off. Sound about right? How do i go about linking th wires in the wall (3 heavy gauge wires) to the pressure switch (2 smaller wires), and then on to the motor (3 heavy wires)?

[Nowhere]

You're missing the starter.

The starter is a high amperage solenoid that is switched by a low power switch (the pressure switch).

Find the power ##'s for the motor and then buy the appropriate starter unit.

Grainger and e-bay are good sources.

[Nowhere]

This is the one I have on my 5hp baldor motor

http://www.electricmotorsite.com/pc/ctrls_smns_1phase/WS5-2301P

Here's a PDF of a starter wiring diagram

http://www.generalairproducts.com/download-PDF/Tank%20Drawings/1-3ph%20wire.PDF

[some zilch]

after looking at the electrical diagram posted above, what is a "fused disconnect"? Is it really necessary, especially since when i am not in the shop, i will turning the breaker off?

[Nowhere]

A fused disconnect is not needed in my opinion. A disconnect is a nice idea though. A 60 amp model can be had for less than 15 dollars @ lowes or home depot.

I think a standard breaker would work fine for the "fusible disconnect"

[demonranger]

fused disconnects are required for compliance purposes in industrial/commerical settings

for your home use an appropriately sized circuit breaker is more than adequate. I also use a non fused disconnect switch for my compressor.

[some zilch]

appreciate the input....ordered up the above suggested motor starter. Gotta get some wire at lowes this friday.

What size wire is suggested for running this?

I am going to install an unfused disconnect, given the fact they are cheap and readily available locally.

believ it or not, i emailed Campbell Hausfeld, and they emailed what appears to be a photocopied version of the origional manual:D

[Nowhere]

If that is a 5hp motor, 8/2 or 10/2 should work. Make sure not to get X/3, that will contain 3 current wires and a ground. 240v stuff only needs 2 current wires and a ground.

The breaker is about 50' from my 5hp baldor, I ran 8/2, it was about 100 dollars @ home depot for 100' of cable/wire (forget the difference).

Are you going to hardwire that setup or use a plug?

[some zilch]

its going to be hardwired...i already have the wire inside conduit running along the wall. the garage's original owner had a large air comp also.

[some zilch]

alright guys, back to this......

I ordered up and recieved the motor starter recommended in the link above.

How does the pressure switch tie into the motor?

I have my two hot leads coming out of the wall going into the motor starter.
I have my two "hot" leads coming out of the motor and into their spots in the motor starter.

My pressure switch has (2) each of "line" and "load" terminals.

The wiring diagrams that came with the motor starter are kinda vague, at least to me, and the pressure switch pictured in the diagram only has (1) each of "load" and "line" terminals.

So basically: how do i wire the pressure switch so it controls the motor starter? Does it need some kind of "hot" electrical input, or is mearly acting as a switch connecting two wires at a given time?

Also, does the motor starter need to me grounded? the diagram does not show a ground, but in a couple of threads on here, a ground is mentioned or pictured when doing this. I have the ground coming out of the wall, and i know the motor has to be grounded, anything else

thanks in advance