Question about Intermatic T104-20 Indoor Hot Water Timer

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I was trying to install t104c with multiple time set to run 4 1000 watts light? Can any one help me with the wiring?

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On the switch you have, line,,,,, that is the wires coming in, 2 of them are hot, 110 volts each, both from the same breaker, 220 volts, your timer is 220 volts, you have 2 wires going out, load,, they are 110 volts each, both go to your lights, they all have a neutral or ground or both. Depends on the location. Most of the new stuff will have the 4 wires. 2 of them are colored, any color but green or white will be hot. You are running all 4 lights at the same time? Right? And they are all wired together. This should work.

Posted on Apr 24, 2010

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If i was to change headlight globes from 55 watt low/65 watt high to xenon halogen 90 watt low/100 watt high is there any problems


Most OE factory wiring is marginal as far as amperage carrying capability goes. They installed wiring fine for the stock bulbs and switch. A lot of vehicles send power to the lights..head and running...through the light switch on the dash. This causes it's own problems as switches are the weak link in the lighting system.

If you run 100watt bulbs you will need to power the bulbs via a 40 amp relay switched by the light switch so the switch does not carry the amperage load through it's contacts.

Doing so will reduce the voltage drop to the bulbs as a 2 volt drop will cause the bulbs to be only 75% as bright as they would be with the full 13.5 volt running voltage..

You run a fused wire from the battery or power distribution block to the relay that should be mounted within 6 inches of the closest h/l bulb. Then from the relay to the head light bulb/s. The front and rear running lamps can remain as factory as they are low amperage draw and original light switch will work because you now no longer run power to the h/lamps through the switch.

Search the www for schematics for relay switched lamps.


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Mar 12, 2014 | Cars & Trucks

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Trailer - brake lights don't work on one trailer - work fine on other....


You have to many bulbs running for the size wire you can get into a 7 pin plug. You will have to up grade to a heavy vehicle plug which is around 2" in dia.. Next the stop light draw 25 watts each so if you have 3 trailers that ia 6 x25 watts x12 volts will indicate how many amps you are pulling when the brakes come on. Next you can change the wiring so that each bulb is connected in parallel not series that is the first 2 lights have one wire the 2nd bulbs will have a different wire out of the same pin and so on for the rest of the trailers. So what you will have will be say for 3 trailers the trailer plug will have wire to the first trailer and out of the same pin will be another wire that will go to the socket for the second trailer and so on That way the wire carrying the load will be the vehicle wire that you should have relayed any way. So you have a big current wire to the relay that is connected to the power pin of the socket. The relay is activated by the stop light wire to earth. This closes the relay and the heavy wire conducts current directly to the stop light pin of the first trailer and is piggy backed to the second socket and so on.. IN the end you will have only 2 bulbs working on each wire and not a multiple of bulbs drawing current on the one wire

Jul 28, 2013 | Ford F-250 Cars & Trucks

1 Answer

Why won't my ml44t transformer turn the connected lights on or off?


1) Copy following link for installing and troubleshooting power pack
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

2) Test outlet for power.
Temporarily run extension cord from another outlet.
Connect wires to terminals a and b ... make sure no insulation is under screw plate.
44 watt power pack will operate 44 watts of low-voltage lights (12Volt).
If 300 watts of lights are installed on line, then lights probably will not light up.

Mar 01, 2013 | Hardware & Accessories

1 Answer

Newly installed Hunter remote will work light and fan if only 2 of the 3 bulbs are installed.


Did you install the correct wattage? If you put in 2-60 watt try 3-40 watt instead .

Dec 30, 2012 | Hunter 52" Ceiling Fan With Light And...

1 Answer

First My sister inlaw has a 3/4 recirc line. used the by pass h&c under last faucet to use cold as recircu line. Note acutal 3/4recirc is in kitchen but even thou closer to water htr. it is last for...


I don't understand everything being asked, so add a comment any time.

Problem1 is excessive electric bill.
Suspect is new 120Volt Taco recirculation pump.
Look at motor nameplate for amps and watts and HP. Taco pump is usually robust 1/3 HP which is 252 watts or same as running four 60 watt light bulbs.
If pump runs 18 hours per day x 252 watts = 4536 watts or 4.5 Kilowatts per day
Buy a kill-o-watt meter that plugs into outlet, and plug Taco pump into the meter for 48 hours.
This will give you total watts used for that time period.
1000 watts = 1 kilowatt.
Electric bill is probably 12 to 20 cents per kilowatt.
So if Taco uses 4.5 kilowatts per day, that is $.54 to $.90 per day multiplied by 30 days.
So cost is $15 to $30 per month.

Problem2 is Taco runs too long.
Taco operates either by thermostat or by timer. You choose which mode by using slide switch that is usually located under the timer dial. Set switch to TIMER to use timer, and ON to use thermostat, and off to turn TACO off.
If Taco is set for thermostatic operation, the Taco might be defective. Or there could be crossover problem at single handled faucet.
Another problem could be air in the water line: install air vent.
http://waterheatertimer.org/Crossover.html
http://waterheatertimer.org/Water-heater-recirculation-system.html
http://waterheatertimer.org/How-to-set-timers.html

Jul 17, 2011 | Taco 1/2" 006 BC4-TAC Circulator Pump/...

1 Answer

I have two amps one for my speakers and the other for my subs it was working fine but recently one of them turned off. I thought was a short circuit and bought a new one but still doesn't work. Its looped...


When running multiple amps you need a relay most of the time for the remote wire off the radio this is because the radio was built to power one not multiples. one 12 volt relay may help .check local car audio store. also when hooking up relay it has to have a 12 volt power wire connected to it usually the center pin on the relay is your connection for the power wire the you connect your remote wire from the radio to the relay then connect each amp independently to the relay. Hope this helps write back if not . and if so leave feedback

May 09, 2010 | Stingpro ST444 1850 Watts Complete...

1 Answer

I just purchased some spotlights to add to my already installed malibu landscaping lights. I upgraded my transformer to 300 watts since the total wattage used comes out to 220. The lights on the end of...


Yes, using a larger wire will help, as will using more than one run. If you want too, you can leave the 16 gauge wire in place, then run the new 12 gauge wire and transfer most of the lights to the new run.

The fewer lights on a run, the less dimming will occur, so put more lights on the 12 gauge run.

Also, the longer the run, the more dimming will occur.
You may want to reconsider the location of the transformer, if possible. In your case, it would be better to locate the transformer in the middle of the current run, and just split the run in half to make a run in each direction. Of course, that depends if you have a 120 volt outlet available in that area.

Jan 03, 2010 | Malibu ML600TW - Low Voltage Power Pack -...

2 Answers

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.

Mar 29, 2009 | Garden

1 Answer

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.

Nov 14, 2008 | Weatherproof WT-12 - Single Circuit ...

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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.

Oct 21, 2008 | Garden

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