What length of wire can I use with a 300 watt transformer and 6 50 watt bulbs

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Gene Haynes

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Posted on Aug 26, 2014

Gene Haynes

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75 feet using 12 gauge wire
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html#wires

http://waterheatertimer.org/Malibu-power-pack-stopped-working.html#install

Gene

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Malibu Power pack stopped working

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Scott Jelt

44 Answers
Posted on Dec 04, 2008

SOURCE: how to make multiple runs for low voltage transformer

Yes, It will work fine splitting it into 2 runs connecting them together in the transformer. It will work better than running them all on one line. Sometimes running them all on one line the last light s dimmer than the first light. I was an electrician for 14 yrs. and I promise you it will work.

Craig Butler

1730 Answers
Posted on Jul 05, 2009

SOURCE: I have a 300 watt Malibu transformer to run 4 step

Take one cable to the x-former to the 4 sets, then Splice all the wires (5 in one nut and 5 in the other) together. Then connect the one set at the x-former. Don't worry too much about the 10 ft issue. It will work fine.

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spacerook

130 Answers
Posted on Jun 08, 2010

SOURCE: boosting output power

When you place the transformer in series you will be affecting the voltage on the output, placing them in parallel with give you the same voltage, but will increase the amperage output. Both transformers MUST be Identical. A switch must be used on the line side to disconnect Both simultaneously, for safety reasons.

Anonymous

1 Answer
Posted on Jul 05, 2010

SOURCE: Malibu 300-Watt Low Voltage Transformer ML300RTW Not Functioning

My power went off at my house. After it came by on how do I reset the transformer to come on automatically?

gsayer1

2 Answers
Posted on Aug 12, 2010

SOURCE: I have a Malibu 900W transformer for low voltage

im looking for that same answer too ...

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1answer

I have the ML300RTW can I use 16 guage wire with this unit ? I will be having [4] four lights . Thank You

16 gauge wire is fine.
Check if wire gets hot.
Make sure bulb wattage matches 300Watt output of transformer.
If you have less than 300Watts, then bulbs will burn out faster and transformer will burn out.
Replace bulbs as soon as they burn out.
Open following link for troubleshoot and tips:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

Read full answer

Jul 31, 2011 • Malibu Intermatic Inc. ML300RTW 300-Watt...

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1answer

I purchase a Malibu ML600TW. My quest is. In this unit are there 2 separate 300 watt transformer. or when you contact the line in you are wiring to 600 watts.

With the 600 watt ML series, there are two sets of a-b-c terminals. C terminals are used with photo eye.
Connect 300 watts of bulbs to one set a-b terminals, connect 300 watts to other set of a-b terminals.
I'm not sure what is inside the power pack. However if you run less than or more than 600 watts or let your bulbs burn out for any length of time, the power pack can burn out. Save your receipt for limited 5-year warranty.

For your benefit, open following link for more information on ML power packs, plus troubleshoot, plus tips to keep power pack from burning out, and links to trippers:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

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.

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May 24, 2011 • Malibu ML600TW - Low Voltage Power Pack -...

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1answer

I have a Malibu ML300RTW transformer with a 50 ft. length of 16 guage cable supporting (4) 20w lights. Can I splice on another 100' of cable and add 4 more 20w lights or is there a cable length limitation?

Usually 50 - 75 ft. is as far as you want to go, especially with 16 gauge wire. What happens is the lights get dimmer as the length of the run increases. If you don't mind the lights getting noticeably dimmer, go ahead and add the other 4 lights. Using a heavier (12 gauge) wire will help a lot. You'll want the 12 ga. to start at the transformer, preferably running the whole length. Also, using a smaller watt bulb will help.

If you have a 120 volt outlet near the approximate middle of the new (total 150 ft.) run, you could relocate the transformer to that location and have two 75 ft. runs in 2 directions.

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Nov 28, 2010 • Intermatic Malibu 300W Power Pack...

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1answer

Timer will not tirun on the lights, it stops when it gets to the time to turn on.

Malibu home page
Malibu manuals

Try the manual override >>> un-plug power pack and try loosening manual override with WD-40

It sounds like the clock motor is unable to push the manual override
Don't continue to run power pack or the clock motor will burn up or break a plastic gear

If manual override will not work, or clock will not trip on lights, you need a new power pack
Power pack size chart and wire length

Be sure to buy same wattage power pack as you have
The 300 Watt unit is made for 15 - 20watt bulbs (15 x 20 = 300)
If you buy 600 Watt power pack and hook it up to 10 - 20 watt bulbs, it will burn out the bulbs
Manual also says to replace burned out bulbs ASAP or other bulbs will burn out.

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Oct 09, 2010 • Malibu Intermatic Inc. ML300RTW 300-Watt...

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1answer

Transformer problem

Malibu power pack has to match total watts of bulbs

15 bulbs each 20 watt = 300 Watt power pack
10 bulbs each 20 watt = 200 Watt power pack

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Mar 01, 2010 • Malibu ML200RTW - Low Voltage Power Pack...

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1answer

Can you hook up two 12 gauge cables to the power pack of the ML 300 RTW transformer. Power cable would run in different directions. Thank you Joe

Hello yes you can the Important thing to remember here is not to exceed the wattage that the transformer puts out.

Add up the wattage of each bulb that you are running and ensure that you do not exceed 300 watts.

for example a 300 watt transformer could drive
a. 10 - 30 watt bulbs
b. 20 - 15 watt bulbs
c 75 - 4 watt bulbs

Its also ok to mix bulb wattage for example I use 10 watt bulbs in the fixtures in the front of the house but also power 4 20watt spotlights from the same transformer.

Hope that helps

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Feb 26, 2010 • Malibu ML300RTW - Low Voltage Power Pack...

1helpful

1answer

Dim lites at end

You have a bad case of 'voltage drop my friend. Your transformer is probably undersized. Add up your bulbs and you have 234 watts. You're probably using a 200 watt x-former, right? Either lower the bulbs wattage to 11 watts, or get a 300 or 400 watt x-former.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

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Jun 20, 2009 • Intermatic Malibu 300W Power Pack...

0helpful

1answer

Intermatic ML300RTW not working

Yes this loose strands is probably the issue, the Transformer is working too hard and shuts down. you can make sure by removing all the bulbs but the last one and turning the transformer on, if it fails- you've got bad wiring. move the x-former closer to the lights so you don't have very much bad wiring.

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Apr 09, 2009 • Malibu Intermatic Inc. ML300RTW 300-Watt...

4helpful

3answers

My low voltage landscape lights are constantly going on and off once the timer activates them initially. I suspect there is a short somewhere, but is there a good way to locate the short besides pulling up...

Your transformer must have output greater of the total wattage required of the entire system. Example: Putting lights that draw a total of 250 watts with only a 180 watt transformer will result some lights not working, or dimming and flickering, or intermittent power outtages. I learned this from experience. Always go with a transformer that has more wattage available than what is needed. Also, using the incorrect gauge of wire can cause the same issue. Wire creates resistance. Distance the power must travel through the wire creates more resistance at the end of your run than the beginning.

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Mar 29, 2009 • Garden

2helpful

1answer

Landscape ligthing Transformer

Yes ican. They are made to be split into two 300 watt circuits. So it's ideal to place it at a location in the middle of you lights . Basically to go each direction from the transformer. Now you need to find out what wattage bulbs are in each light.(different fixtures can have different watt bulbs.) Lets say you have 8 lights going one direction and 8 going the other way and each light has a 20 watt bulb. That adds up to 160 watts on each side. So you are well below the 300 watt rating per side. By the way I wouldn't go anymore than 250 watts on a 300 watt circuit. Next you look on the bottom of the transformer and you will see the screws where you hook up the wire. You will need to strip the end of the wires about a half inch. Hook one set under the A & B for one side then do the same for the otherside. Plug in the transformer and set the timer to whatever tme of day and night you prefer. Hope this helps. If you have more questions just ask. Thaks and remember to rate me.

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Oct 21, 2008 • Garden

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I have the ML300RTW can I use 16 guage wire with this unit ? I will be having [4] four lights . Thank You

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What length of wire can I use with a 300 watt transformer and 6 50 watt bulbs

1 Answer

Gene Haynes

5 Related Answers

Scott Jelt

Craig Butler

spacerook

Anonymous

gsayer1

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Related Questions:

I have the ML300RTW can I use 16 guage wire with this unit ? I will be having [4] four lights . Thank You

I purchase a Malibu ML600TW. My quest is. In this unit are there 2 separate 300 watt transformer. or when you contact the line in you are wiring to 600 watts.

I have a Malibu ML300RTW transformer with a 50 ft. length of 16 guage cable supporting (4) 20w lights. Can I splice on another 100' of cable and add 4 more 20w lights or is there a cable length limitation?

Timer will not tirun on the lights, it stops when it gets to the time to turn on.

Transformer problem

Can you hook up two 12 gauge cables to the power pack of the ML 300 RTW transformer. Power cable would run in different directions. Thank you Joe

Dim lites at end

Intermatic ML300RTW not working

My low voltage landscape lights are constantly going on and off once the timer activates them initially. I suspect there is a short somewhere, but is there a good way to locate the short besides pulling up...

Landscape ligthing Transformer

Not finding what you are looking for?

Hardware & Accessories

I have the ML300RTW can I use 16 guage wire with this unit ? I will be having [4] four lights . Thank You

Ask a Question

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Related Topics:

What length of wire can I use with a 300 watt transformer and 6 50 watt bulbs

1 Answer

Gene Haynes

5 Related Answers

Scott Jelt

Craig Butler

spacerook

Anonymous

gsayer1

Add Your Answer

Attachments: Added items

Related Questions:

I have the ML300RTW can I use 16 guage wire with this unit ? I will be having [4] four lights . Thank You

I purchase a Malibu ML600TW. My quest is. In this unit are there 2 separate 300 watt transformer. or when you contact the line in you are wiring to 600 watts.

I have a Malibu ML300RTW transformer with a 50 ft. length of 16 guage cable supporting (4) 20w lights. Can I splice on another 100' of cable and add 4 more 20w lights or is there a cable length limitation?

Timer will not tirun on the lights, it stops when it gets to the time to turn on.

Transformer problem

Can you hook up two 12 gauge cables to the power pack of the ML 300 RTW transformer. Power cable would run in different directions. Thank you Joe

Dim lites at end

Intermatic ML300RTW not working

My low voltage landscape lights are constantly going on and off once the timer activates them initially. I suspect there is a short somewhere, but is there a good way to locate the short besides pulling up...

Landscape ligthing Transformer

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Hardware & Accessories

I have the ML300RTW can I use 16 guage wire with this unit ? I will be having [4] four lights . Thank You

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