I need to supply four 110v/15amp circuits temporarily for a temporary
function to the backyard. So I could add four 15 or 20 amp breakers to
my panel and run four wires from the panel to the backyard.
But, could I save on wire and just run one or two of those fat wire
that supports 220v/40amp circuits instead? I have some of that wire
lying around. How would I get two (maybe four?) 110 volts at the other
In order to get a circuit to 15 amps, you need 15 amp breakers or fuses.
The 220V part of the problem depends. You need the neutral and I don't
believe all stove circuits had a neutral.
What you are really asking to do is to put in a sub panel box.
For any temporary use, I would consider using existing circuits and
running heavy 12guage extension cords or add the new breakers to you
What are you powering, and how far do you have to go? You know you can
run more than one outlet on a circuit (unless the loads are large.)
What wire do you have "lying around"? Does it have 3 conductors or 4?
firstname.lastname@example.org (ississauga) wrote in message
It's not safe unless you really know what you're doing with two-phase
220V and that much ampacity. But if this is really temporary, and you
must play with fire...
If you have a conventional 4-wire stove outlet, it will have two hot
phases, neutral, and ground. The leg from either hot phase to neutral
is a 110-volt circuit, so you have two 110-volt circuits available to
You will also need very heavy conductors, proper fusing, and proper
isolation for anything that is being used outdoors.
The electric dryer would be better (assuming it's a 4 wire outlet.)
Temporarily replace the dryer's breaker with a 20A. The dryer will
still work just fine except maybe on its highest temperature settings.
Connect a 4-pin dryer plug to the end of your makeshift long cord. At
the other end, put a deep 4" square handybox with a proper cable clamp
and install 2 duplex GFCI outlets. Connect the red wire to one LINE hot
screw and the black wire to the other LINE hot screw, connect the white
wire to both LINE neutral screws, and the green wire to the metal box
and optionally to the ground screws on each GFCI (if you leave them
open, the GFCI's will get their ground through the strap from the metal
box) Now you have 4 GFCI protected 15A or 20A outlets on 20A circuits.
Neither GFCI device will know the other is there. Run short extension
cords as necessary from this distribution box.
When you are all done, don't forget to change the dryer breaker back to
its original 30A.
Not that I'd actually recommend doing something like that...
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