Where do you hook in the neutral wire (common) on 230 volt install

talk with an electrician
normally red is active , black is neutral
the white may be the neutral depending on the voltage in use so talk with the electrician

I'm assuming you mean it's 230 volts, not 230 amps. (big difference here)..and I think it's actually 240 volts. (minor detail)

This is really a job best left to a qualified electrician, as you're going to need to have a 30-amp outlet installed (compare to an electric clothes dryer outlet, or a welder outlet).

The cord supplied with the compressor should be a 4-wire cord,consisting of 1 black, 1 white, 1 red and 1 green wire.

The green wire is the ground and it absolutely *must* be hooked up to guard against an electrocution hazard. Of the other 3 wires, the black is 1 or the 2 hot leads (the red is the other hot lead). The white wire is the neutral.

You will need a *TWO-POLE* 30-amp circuit breaker of the type that's made for your specific make & model of electrical panel. This breaker will have two separate, independent bussbar connections on the underside and 2 separate screw lugs to attach your Black & Red wires to (individually, not to the same lug). These are unique as to brand and model, so you will need the right one. If this is going in your home garage and you're lucky enough that your breaker box is there in the garage where the compressor is going, then it's going to be much easier. (much less expensive) Still I am going to stop here as I cannot recommend anyone working inside their electrical distribution panel unless they are a qualified electrician. Please hire an electrician to hook this up for you. Please do not attempt to hook it up yourself.

Keeping in mind that some motors may be different
The most common wire colors on a 3 speed motor are as follows:
Red- Low speed
Blue- Medium speed
Black- High speed
Brown capacitor wires ( usually two of them connect to the two capacitor terminals doesn't matter which wire to which terminal)
White - Neutral wire on 115 volt systems or the other 115 volt side of a 230 volt system ( note on a 230 volt motor this wire may not be white). Remember this is the most common wiring but different motors may have different wiring.
Hope this helps.

Bob

On 230 volts you have 3 wires 2 are 115 volt and the third wire is ground. As long as you hook the ground wires together correctly the other wires don't matter. Usually the ground wire is either white or green. The black wires are hot (115 volts).

this is 2 ---110 volt power feed lines & a neutral ( ground ) 3 wires all together , a second redundent ground won't hurt -----the same power feed as a stove or dryer .make sure to use at least 10 -- 8 gauge stranded wire / check the product requirements ---thicker wire ( smaller gauge number ) for more amprage or loner distance...will also need two 15--30 amp circuit breakers///// check specs......

There should be two metal bars with multiple screws--one should be mounted directly to the metal box (grounds), and the other looks the same, but is mounted with insulators from the box (neutrals). The ground is usually a local ground rod driven near the box to a depth of 8'. A #6 ground wire couples it to the ground bar. The neutral is brought in with the two hot wires (230 volts) from the transformer. One hot wire and neutral gives 115 volts. Hope this helps!

Hooking one side to common (neutral) will give you only 120 volts. You need to hook to a double ganged breaker which will supply the needed 240 volts. Be sure to run a ground wire to the metal frame of the light from the ground bar in the service panel. Hope this helps!

Hi, I am not quite sure of what kind of set-up you are saying you have when you say it says line ground natural? If you have a 115/230 volt power supply, this should be very easy to tie into. Look at the wiring diagram on the new unit real good and locate the 2- hot wires that should say line one or L-! and L-2. Your 230 volt wires will connect one to each side of those 2 connections, and will have a ground wire that grounds to a metal lug or screw on the unit. Look over the diagram for field wiring connections for high voltage and this will tell you where you need to hook your 230 volt wires and ground to. If this new unit is 208/230 volts, you should have connections like I have said either L-1 or t-1 and L-2 or T-2 that you will tie in your 230 volts to. Just look over the diagram and you will see where the beginning of the 2 hot wires come into the unit. There should be either 2 good sized black hot wires that are for your incoming hot wires to connect to, or they are already connected to the contactor, and you will need to connect yours to the line side of the contactor. I see what you are saying now, that they are only showing you 1- 115 volt connection to the new unit so you will have only 115 volts to run it. You want to know where the other 115 volt conductor hooks up for 230 volts. This is why you need to look at the schematic and wiring diagram that shows both of the 208/230 volt connections on this new unit so you can connect both hot wires to it. I can't pull up a picture of this on the Internet, but it will show you on the schematic on where they connect. This line ground neutral connection sounds as though its not for a hot wire, but for your ground, or if you happen to have a neutral wire that is being used for a ground. Please keep looking for the 2- line in connections as this is what you will need to find and where both 115 volt wires connect. They are your line voltage wires, so they need to connect to the load voltage hot wires at the L-1 and L-2 connections of this unit. This should be fairly laid out for you, but sounds like they have made it difficult? Look for what I have said and the schematic drawing and you will find the connections. Please don't forget to rate me as I know you will be kind. I will be checking back with you as I keep all of your information on file so I can look you back up if I need to. You can contact me by my user name below if you need me also. I wish you the best and follow my instructions and I know you will get it right.
Sincerely,
Shastalaker7
A/C, Heating, & Refrigeration Contractor

On a 230 volt std hook up here's the way it is supposed to work. From black to white you should get 115 volts. From Red to white you shoudl get 115 volts. From red to black you should get 230 volts.

Concentrate on getting the correct output from the generator with the load to the house disconnected

This should be 115v (black to white, 115 volts red to white and 230 volts red to black.

On the load side (ie, the house connected) what are you using? 115 volt lights, etc on one side of the
230 volts, and some other 115 volt loads on the other side.. Are there any 230 volt loads. It could be
that one side of the 230 volts (ie, a 115 volt side is drawing a lot more current than the 2nd 115 volt leg.

Get back with me on just what the loads are botth 115 volt and 230 volt . also what are the rating on the circuit breakers.


Loringh