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Wiring a 230V 3 phase heat pump

My three phase input on my breaker box has 3 black and one ground . My heat pump is showing specific color connections for each of the hot wires . How do I determine specific legs of three phase to connect properly or is this important?

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  • Anonymous Mar 31, 2014

    I need a schematic diagram to show me how to connect or wire 621 Kitchenaire solid plate stove

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  • Master
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Yes, this is quite important when it comes time to turn the motor. in 3 phase, motor rotation direction is critical importance. however, it is a simple matter of trial and error if only a fan is involved...not sure of consequences if freon pump is turned backwards...may want to remove pump wiring temporarily...so try "bumping" the fan only...your method for this "fan only" is yours to figure out. try to set to "fan only" somehow then apply power. if fan turns backwards, the take any 2 black wires and reverse connections. fan should now turn in proper direction.

Posted on Nov 11, 2007

  • Marty marty Nov 14, 2007

    hello, anybody there?

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1 Answer

How do I wire up a A.O. Smith 3/4hp PB4 Booster Pump for 230V operation?


Here's some more info diagrams for you http://www.electricmotorwarehouse.com/aosmith/AO_CONNECT.PDF L1 is one hot wire L2 is the other hot wire. L1 can not be connected to a L2 wire and L2 can not be connected to a L1. Ground only to ground.

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In a mobile which wire is hot the white or the black


Usually the black is Hot.
Test each wire to bare ground wire, and tester lights up on Hot wire.
What are you wiring?
What is a mobile?
What terminals are you connecting to? What color is each screw terminal?
What voltage are you using? Only 120volt single-phase has 1 hot wire.
If you have split-phase 230V from UK or 240Volt in US, then both wires can be hot.
http://waterheatertimer.org/How-to-wire-switches.html
http://waterheatertimer.org/See-inside-main-breaker-box.html

Sep 27, 2012 | Electrical Supplies

1 Answer

Out of the white wire and black wire which is hot coming from the fuse box?in order to hook up light switch


Usually the black is Hot, and connects to brass colored screw on switch.
Test each wire to bare ground wire, and tester lights up on Hot wire.
What are you wiring?
What is a mobile?
What terminals are you connecting to? What color is each screw terminal?
What voltage are you using? Only 120volt single-phase has 1 hot wire.
If you have split-phase 230V from UK or 240Volt in US, then both wires can be hot.
http://waterheatertimer.org/How-to-wire-switches.html
http://waterheatertimer.org/See-inside-main-breaker-box.html

Sep 27, 2012 | Electrical Supplies

1 Answer

I just need to know what my sp250 idlearc lincoln mig welder is single phase or three phase, my gurage has three phase running in how do i wire in ,if single phase


Hi:

Your Machine is single phase, and it could be a 208/230V or a 230/460/575V depending on the model. Check what kind of voltage do you have at your garage first, before attempting to do the following:

On a three phase wiring you will have 4 wires with the following colors; green, red, white and black. If you have 208/220/230 volts available at your garage you can connect the green, white and black wires, always green being the ground cable in the middle, black and white don't matter which side you screw them in.

Before attempting to connect a 480V to the machine check machine's plaque information in the front (or back) for real voltage, because this voltage can burn the PC board of you machine. The same color sequence applies to the 480V.

Good luck.

If this was useful to you, please vote.

Mar 19, 2011 | Welding Tools

1 Answer

I need a wiring diagram for hayward pool filter model K48m2n11b3


Are you trying to wire a pool pump?
I found manuals at the Haywood site > I saw nothing for K48m2n11b or anything close to that number
http://www.haywardnet.com/inground/products/manuals.cfm

But lets work on the problem and see if I can give you some help:

After opening a few manual and searching for the word 'volt' and 'pump' ... each manual talks about 'pumps' generically, as if the pump is a separate purchase item.

Lower down on the manual page they have a list of pool pumps. A search for the word 'volt' inside the pump manuals says 'match supply voltage to motor nameplate voltage.'

As you know, each electric device has a label showing voltage, wattage, etc. Your pump should show 120Volts or 240V. I didn't see any mention of 3 phase wiring, so I assume your Haywood pump runs on typical residential wiring? And that you are not using 440Volt or 3 phase.

The 120Volt pump will have a black, white and bare ground.
The 240Volt pump will probably have a black, white, red and bare ground
The 240Volt pump could have a black white and bare ground

First the 120V pump:
The 120Volt line from your breaker box will have a black Hot wire, white Neutral wire and bare ground >>> this wire connects color-to-color with pool pump

Next the 240V pump with black, white, red and bare ground
a) The 240Volt line from your breaker box can have the same 4 wires, in which case they connect color-to-color
b) The 240Volt line from your breaker box could have a black white and bare ground, in which case the black goes to black, the white goes to red, the bare coppers are connected, the white pump wire is capped off and not used. If pump does not operate with this wiring, another line from the breaker with wires that match pump might be necessary.

The 240V pump with black white and bare ground
a) The 240Volt line from breaker can have black, white, red and bare ground, in which case the black goes to black, the red goes to white, bare grounds are connected, the white wire is capped off
b) The 240Volt line from from breaker can have black white and bare ground, and this connects color-to-color to the pump

HOW do you know if line from breaker is 120V or 240V?
If you know which breaker wire is connected to, then it's easy
If you do not know which breaker
-turn off power
-separate wires so they can be tested
-use ordinary tester
-stand on dry boards
-tape tester leads to sticks so hands are away from power

-turn on power
-test each wire to bare copper
-tester lights up on Hot wire
-120V line will have 1 Hot wire
-240V line will have 2 Hot wires

Oct 18, 2010 | Garden

1 Answer

How do I change the electric wire in a franklin ground water pump from 230v to 115v? I purchased a Red Lion 3/4 hp convertible ground water pump but must change the power and wiring from the pumps...


You have 4 wires coming out of the fuse box , one white , one bare, one black, one red, right? The fuse is a double pole, 220 volt, ?30?amp, guessing, and you are now wiring up to a 110 volt, motor which needs 20 amps, so, remove one wire from the breaker, red or black, shut it off first, pull the wire off, tape it and mark it what it was. leave the red wire on there, or the black, it doesn't matter, Now you have one hot, one ground, one neutral, hook them up to the pump, the box on the pump has screws, one silver, one brass, the brass is always hot, the colored wires are always hot, The silver screw is neutral, the white is neutral, always, and the ground wire goes to the ground screw, maybe outside of the box. You should be all set, tape off the old colored wire you didn't use and mark it . You might need it someday. Hope this helps.

May 31, 2010 | Plumbing

1 Answer

Breaker keeps tripping when turning on pump.


The red and black wires if ran correctly are the load lines(power). The white is neutral or ground. If its a 1/2 to1-1/2 hp motor connect the red and black wires to terminals #1 and #4. If its 2 hp use #1 and #4. If its 3 hp use #2 and #4. Connect the white wire to the green colored screw. A grounding conductor should always be connected under the green grounding screw, which is located within the terminal compartment of the motor. You can check the breaker for the wire colors, one should be black and the other red. The white wire should be terminated to the neutral/ground bar in the can.

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1 Answer

Mini Split Heat Pump wiring


Check to make sure it is single phase, should be stamped on unit. Is this wiring coming from what use to be there?

If you replaced the old unit with this one, you can trace the wires back to the breaker box. If you are Electrically inclined or you know someone who is.
Remove the panel and trace the nuetral and ground wire to the bus termination.

Some States require or use to require that the nuetral
and ground wire be tied together. 230 is 230v ,2hot and a ground.

My guess is you tie nuetral and ground together or
I wouldnt use white wire and I would disconnect
from both ends.

If you are uneasy about electricity, talk to a certified
electrician. Contact City Electrical Inspector. Dont get hurt!

Jan 21, 2010 | Heating & Cooling

1 Answer

I have a heater that can work on 3 phase or monophase. I know because there is a screw that can be turned to switch between the two. The problem is that it has been wired for 3 phase with 4 wires: earth,...


2 x black go to each leg of 230 power. Neutral goes to a neutral point, and earth goes to an earth ground point. While you can tie earth and neutral together (they are in the breaker panel anyway) it does not meet some codes to do this when the appliance provides for separate connections.

Dec 16, 2009 | Heating & Cooling

2 Answers

Residential Electrical Wiring Current NEC


On a 120/240Volt single phase system is:

Black = 1st phase
Red = 2nd phase
White = neutral
Green or Bare = ground

3 phase is the same with the third phase being blue.

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