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I am trying to connect my new pool motor. I have 3 wires coming out of the box. a black one 120v a white one 120v and a copper (ground). How do I test if it has 240v? How can I connect the motor so works. When I connect white to l1 and black to l2 and the ground nothing happens.Not a sound. But I know that there is power going to the motor. At least 120v cause I use a tester one on black one on the ground. When I do the samething with the white it has the same voltage 120v. When I up the tester on the black and white wires it shows 0 volts. And I took the motor back and it worked on a 110 outlet. What do I do??

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If you put the tester on the white wire and ground and you read 120V, AND you put the tester on the black and ground and you also read 120V- you have 240 V. I don't know what tester you're using, but you should be reading 240V with the tester connected to the black and white wires. Also, to confirm if this circuit is 240V, look to see if the circuit breaker is a double breaker (two breaker switches connected to each other, so when you turn the breaker off, the two switches turn off together)
Does the motor operate on 240V? there should be directions/diagram on the motor housing where the wires hook up. Look on the cover inside, or in the user manual to see if you can hook the pump up to 240V.
Just as a side note - If this circuit is ,in fact, 240V, the white wire insulation should really be covered over with either black or red electrical tape, to identify it as a hot wire.
Hope this helps. Good luck.

Posted on Jul 23, 2009

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Most probable cause is that you have the black and white on the same phase, and that's why you have 120 volts from black to ground and from white to ground, but 0 across black and white. If the motor ran on 120 volts, why are you connecting it to 240?

In any event, in order to get 240 volts, move the white to a circuit breaker that is directly above or below the breaker that feed the black wire. You are supposed to use a 2 pole breaker for 240 volts anyway

Posted on Jul 23, 2009

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T101P3 is ordinary 120Volt T101 mechanism inside a beige plastic box.
Rated 40 amp.
Three terminals A 1 2
Very small white wires that power the WG1570 clock motor are connected to terminals A and 1.

White neutral wire from breaker box connects to terminal A
Black Hot wire from breaker connects to terminal 1.
This will power the clock motor, which will switch the timer on-off.
Green ground wire and bare copper wires connect to green ground screw.

115volt motor should have 2 wires.
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http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

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Intermatic T103P Timer (120V) Wiring Guidance


Copy following link for T103 timer wiring options:
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http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T103

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Replaced old Sta-Rite pool motor with new 1.5 hp Emerson 1081 pool motor. Used exiting 240V wiring. Wired L1 to 120V (black wire), L2 to 120V (red wire), Ground to green ground Screw (green wire). Turned...


Get qualified electricrian to help. I've had the same problems with my pool pump. If you make one little mistake, it could be your last.

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Triing to install intermatic t103 please help. Source is 3 wire 110v want to run 3 blower 110v 9.5 amps each off the t103 timer. Don't have 220v in house just 110v. I need a very simple wiring diagram I...


T103 has 120Volt clock motor, so we can wire this timer.

T103 timer is rated for 30 amps and 2horsepower and your blowers use 28 amps.
So we're getting close to max on the timer. Hopefully blowers won't all be started at one time since motors draw maximum amperage when they start.
However, you need 30 amp breaker and orange 10 gauge wire for that much amperage >> unless only one blower is turned ON at any given time.
Always match wire size, amperage of breaker and amperage of Load or it will trip the breaker.
If you put 30 amp breaker on size 10 wire it is good. But 30 amp breaker on smaller size 14 or 12 gauge wire is fire hazard.
http://waterheatertimer.org/Color-codewire.html
Add a comment at any time, and I will respond

Look at the basics:
You have 2 cables.
One cable comes from breaker box.
Other cable goes to three 120V plugs (120V is same as 110V).

Each cable has black-wire, white-wire and bare-copper-ground-wire.

How to wire the timer.
Timer has 5 terminals: A 1 2 3 4

A) Cable from breaker box:
White wire from breaker connects to terminal A
Black-wire from breaker connects to terminal 1

B) Cable going to 3 plugs
Black wire to plugs connects to terminal 2
White wire to plugs connects to terminal A
Ground wires connect to green ground screw.

Terminals 3 and 4 are not used in this case.
Here is a wiring diagram that shows 120Volt from breaker box and 120Volt going to Load
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T103

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Wiring of the 2-5-10-15 timer to a jucuzee bath tub it has three wires black blue green. Thanks. Terry.


First thing to consider is size of Load.
Leviton countdown-timer Load rating is 1800 Watt, 120Volt.
Look inside Jacuzzi at rating plate on motor.
Rating plate on motor should give Volts, Watts and Amps.
Formula Volts x Amps = Watts.
Sometimes motor shows VA which is Watts
Is Jacuzzi on 240Volt breaker or 120V breaker?
Leviton countdown timer is not for 240V load.

A) If 120Volt electric Load checks out, here's how to wire timer if 1 cable enter box.
Timer-black-wire connects to jacuzzi-black
Timer-white-wire connects to ground.
Timer-green connects to ground.
Timer-red connects to jacuzzi-blue.

B) Here's how to wire timer if 2 cables enter box.
120Volt cable coming from breaker box has black, white and bare copper wire.
Timer-black-wire connects to black-wire-from-breaker
Timer-white-wire connects to white-wire-from-breaker-box.
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Timer-red-wire connects to jacuzzi-black-wire.

Jacuzzi-blue-wire connects to white.
I am puzzled why this wire is blue if circuit is 120Volt.

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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

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If you know which breaker wire is connected to, then it's easy
If you do not know which breaker
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-use ordinary tester
-stand on dry boards
-tape tester leads to sticks so hands are away from power

-turn on power
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-tester lights up on Hot wire
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1 Answer

How do you wire a intermatic t103


I'm looking at the T-103 sitting here in my office.
Terminals are labeled: A 1 2 3 4
I have about 10 different Intermatic timers on the shelves & each is a bit different

The T103 has a 120Volt (or 110V) clock motor
You need a white Neutral wire to operate the T103 clock

120V: Let's say your Load (light, fan, pump) is 120V
The white Neutral from breaker box connects to Terminal A
The 120V black Hot wire from breaker box connects to Terminal 1
The black wire going to Load (fan, light, motor) connects to terminal 2
The white wire going to Load connects to terminal A along with the Neutral
Ground wires connects to green ground screw
If your wires from breaker and wires to load are wired in reverse, the timer will turn ON the Load but the timer will not shut the circuit OFF.
To test which wire is Hot and Neutral, look at explanation at bottom of page.

240V: Let's say your Load is 240 Volts (or 220 Volts)
The clock motor is still 120V so you still need a white Neutral wire connected on Terminal A
Now you have 2 Hot wires coming from breaker box
Hot wire 1 from breaker box connects to Terminal 1
Hot wire 2 from breaker box connects to Terminal 3
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Wire 2 going to Load connects to Terminal 4
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240V circuits normally have 2 hots and a ground, but no neutral
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http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

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Test requires wires with live electricity >>> this is not advisable without precaution
Stand on dry boards, do not touch anything metal, wear dry clothes, do not hold screwdriver in mouth, wear gloves, tape tester leads to wood sticks so hands are away from power
Remove wires from terminals
Separate wires so they can be tested
Turn on power
Test each wire to bare ground wire
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If circuit is 120V, then there is only one Hot wire
If circuit is 240V, then 2 wires will test hot to ground >> these wires will be Hots 1 & 2
Test assumes circuit breaker is functioning normally.

How do you test for neutral?
If you have 120V line with only 1 hot wire, then one of the white wires will be Neutral?
Test Hot wire to each white wire
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