Question about Malibu ML200RT - Low Voltage Power Pack -200 Watt - With Timer - Plastic Ho

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I have a malibu MLw200RT Low Voltage Transforer ... on the back it has an A B & a C terminal ....... there are 2 wires ...... should one of the wires be connected to A and C is intended to be use for the other as common

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Connect wires to terminals A and B.
Terminal C is for photo-electric eye only.

For more information on Intermatic/Malibu power packs showing photo-eye, troubleshoot steps, replacement trippers, useful links, warranties and tips:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Posted on Mar 21, 2011

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1 Answer

I have a ML500TW timer transformer I don't believe they make it any mor can I replace it with a 600


Yes, use ML 600 with 5 year warranty.
Save receipt.
Copy following link for useful information about getting new power pack to last longer.
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

ML 600 will have 2 sets of ABC terminals.
Each terminal supports 300 watts.
Split lights between both sets of terminals.
Use 12 gauge wire. Maximum 75' length each wire.

Apr 15, 2013 | Malibu ML600TW - Low Voltage Power Pack -...

1 Answer

How to connect wires to back of transformer with plastic connectors


Wires connect to terminals A and B

1) Copy following link for full resources on operation, wire length, bulb wattage, warranty, troubleshoot, etc
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

2) Add comment Dec 2012 for more qassistance

Dec 15, 2012 | Intermatic Inc. ML121RT Malibu Low Voltage...

1 Answer

Transforer has three places to hook up wires instead of two


This will be for different output voltages.
Use multimeter set to ohms to test which wires have continuity.
If you connect Hot and neutral to wrong wires, it will burn up the transformer.
Copy following lind for illustration showing Intermatic 4-wire low voltage pool transformer:
http://waterheatertimer.org/images/PX-600-wiring-diagram-900.jpg

Jun 09, 2012 | Intermatic Malibu 300W Power Pack...

1 Answer

Two things, what size and thread screws on the wire connections and are there separate on off cycles for each 300 watt unit if so how do you set them separately \


ML series power pack has 2 sets of A-B-C terminals.
1) The terminals are not on separate circuits.
2) Typically, Intermatic timers have 10-32 screw.
Open following link for Intermatic/Malibu resources, tips and links to Malibu and Intermatic manuals.
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Add a comment for more help.

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Jun 12, 2011 | Malibu ML600TW - Low Voltage Power Pack -...

1 Answer

How do i hook up the wires on the back of my malibu low voltage system. reads a b c d how do i split the wires one on a other on b ?


Yes, one wire is connected to the "A" terminal (pick one). The other wire is connected to the "B" terminal. The "C" terminal is not connected to the transformer in any way and is not used (unless you need a connection point for a photo control).

Feb 03, 2011 | Malibu Intermatic Inc. ML121RT Low...

1 Answer

All of my malibu lights went out. At the output terminals of the transformer I measure zero volts with the light wires connected but when I disconnect the light wires from the terminals I measure 13...


Sounds like a short in the wiring. If you have more than one set of wires connected to the unit, disconnect all of them and put them back on one at a time, measuring the voltage each time. If a particular set of wires causes the reading to go to zero, I would trouble shoot that set of lights to see where the problem is. If there is only one set of wires connected to the power unit, I would trace it out to each light and see if you could locate the problem.

Sep 11, 2010 | Malibu Intermatic Inc. ML121RT Low...

1 Answer

How do I do the wire connection to the transformer? i have a single wire leading to 2 up lights. this is a Malibu 200 watt with 3 connectors on the back.


I'm assuming that you have a cord that has 2 leads, similar to a black extension cord. Connect one lead to the farthest one on the left screw, skip the middle screw, then connect the other lead to the right screw. Why they did this might be because they used a standard terminal block on all their product and were too lazy to take out the middle screw.

Jun 06, 2010 | Malibu ML200RTW - Low Voltage Power Pack...

2 Answers

Malibu ml200rt internal wiring schematics


If you have a meter you can test for 12 volts AC on the output of the transformer. They go to terminals
A & B

Jun 22, 2009 | Malibu ML200RT - Low Voltage Power Pack...

2 Answers

Malibu Light Transformer ML121RT troubleshooting


1) Disconnect the plug.
2) Remove the 3 hex screws holding the cover.
3) Make a note of all connections (taking a picture is even better).
4) Connect the black power wire to the red transformer wire.
5) Connect the white power wire to the white transformer wire.
6) Set your voltmeter to 20 or 50 volts AC (not DC and not less than 15 volts).
7) Plug the transformer in the wall.
8) Test the voltage coming from the A & B connectors at the back (polarity is irrelevant).
If you see 12 volts or thereabout, the problem is with the little switch (the one with the black and red wires that is activated by the trippers on the clock dial). I have the exact same problem but I have been unable to locate the part so I am going to try to clean the contact points and see if that works.

Jun 22, 2009 | Malibu Intermatic Inc. ML121RT Low...

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