want to use 220dryer outlet to power110

You don't need a transformer, and you could build your own control box if you wanted to. The “L” shaped connection should be wired to the neutral and using one of the straight connectors will give you 120vac. And wiring the other straight connector (hot) and again using the “L” (neutral) will give you another circuit.

The only thing is if your house is very old (built before the 70's) the wire going to the “L” may be a ground instead of a neutral.

 

awwww that is acually perfect buy a small panal box change your breakers to 50 amp if the line can hold 30 if he have to and then you can use smaller 15 amp breaker to distribute
power around the room

if the line is 10 to 12 gage use 30 amp breaker if bigger use a 50 also you can just use three wire on the 220 line and wire it like a stander 15 amp socket with 15 amp 120 breaker simple fix

 

Do you have a neutral?

If its a 3 wire + ground 220 you can pull one hot and neutral and have 110 (wire up a subpanel so you can use each phase)

If its 2 wire (2 hot and ground, no neutral) its 220 only, you cant pull 110 off safely and this is how most dryer plugs are in older houses. you'll have to run a neutral if you want to do 110 minimum, I'd replace the entire line.

Newer code wont allow you to do a 220 w/out a neutral.

 

If the dryer outlet was added later it might work,
Ben is correct, you need to find out if you have a neutral to the dryer outlet, turn off the breaker to the outlet and remove it from the wall to see how many wires are there, if it is a 4 wire you have most likely a black (hot), red (hot), white (neutral), green or bare copper (ground) (the copper may be connected to the box not the outlet) you only need to install a 4 prong outlet.

If it is an older setup you will only have three wires a black and red or 2 blacks and a bare copper, if that is the case you would need to run a neutral (I too would replace the entire wire) to the outlet and swap the outlet to a 4 prong to be able to use it safely.

You could wire a dryer cord to a couple of outlets and just plug it in, it would work but is less than safe. If you decide to do that at least try to run a ground to a cold water pipe. But I still would not recommend it.

 

PowerBox makes what you want. I use their products, and they are top of the line. I use multiple DPC-7500 units to power all my lights, movers, fans, etc... They make much bigger units, but I prefer fail safe redundancy in my grow rooms.

Anyhow, they have many modles that plug into a standard dryer plugs, or can be wired for any plug type. They also have built in timers if you decide you want to run things on timed cycles.

This is the one you want:





Here is one with six 240 outlets on the left and six 120 outlets on the right.



Here is a room running three combos (4x240, 2x120) and two with 120 outlets only.



Looks like they retail for about $360. I don't know what I paid for mine.

http://www.powerboxinc.com/7500_combo.html

 

yea i was looking at that 30 amp timers box as well does anyone on here use one. thats the unit i was gonna post up for you... i dont know what that 120 cord is for though.

 

You will never run any 110v equipment off that 220v 3 prong dryer plug, ever... nothing you plug in will be safe... give it up.

You can pull 110v off a 220v line ONLY if it has a neutral (4 wire).. if it does not have a neutral it is 220 ONLY. This is why nobody makes this with the plug you need, its not safe.. dont swap plug ends unless you want to burn your house down.

you can change the entire circuit to 110v since its a 3 wire, take one of the hots and make it a neutral and hook it up to a single pole 20A breaker... your colors wont be standard, but that dont mean anything if your carefull... if you want to keep it 30A you will need a 30A 110 outlet and a power distribution unit that takes the 30A 110 and splits it out into two 15A circuits with normal outlets.

For example, remove the connecting bar that hooks the two breakers together on the double pole 30A in your fuse box.. pull one of the hot lines off this circuit and hook it to your grounding bar, this is now neutral. Then get a L5-30 Twistlock 30A receptacle to replace your dryer receptacle. Use a power distribution unit to make it available to a bunch of normal outlets.. http://www.nextdaypc.com/main/products/details.aspx?PID=A371150&rsmainid=ND0130014

 

Yeah, the PowerBox stuff uses 4-wire 240 volt service to run the 120v outlets.

 

i agree with ben, you should open that outlet or check at the panel for that neutral. it should be a 10/3 which is red black white with a #12 ground. even if u get the box itd be good to know, especially if you are using electronics on those ccts.

 

If you have to just plug something in, keep using your extension cord until you can get in there and to this properly... yes its a hazard, but not as much as trying to get 110v off a 220v w/no neutral.... putting load on a ground is just plain stupid.