Hi. I'm not an "expert" either, but I deal with AC power on a
daily basis. Your power in a regular household outlet is usually
120V 60hz. You can usually draw a maximum of 15 amps from such a
socket, but you don't really want to do it on a continuous basis
as the wire can heat up and cause a fire. Duty cycle is the
culprit here. The wire IS rated for 15A, but NOT 100% duty cycle.
If you can find a 120V 20A line, you'd be better off. I'm NOT
suggesting you call an electrician and have him install
additional wiring. Just be circumspect with your use of the line.
Feel the plug every so often. If it's really hot (too hot to
touch) turn the kiln off. The dryer is on a 240V line, and you
can run larger equipment on it. The largest am,p rating I've seen
is 40A on a 240V line. If you have a kiln that wants 240V,
unplug the dryer and use THAT plug. Be careful about what plug
and outlet you have, because 240V has MANY different
configurations of pin placement, and if you have to replace the
plug on the kiln, you need to get the right one. You can get
plugs for 240V at any hardware store, and you'd be looking for a
"range plug". I've seen about 150 DIFFERENT plug styles for the
same 240V outlet. I know it sounds like I'm being picky here, and
I am. There are too many people who don't understand AC power,
and I'm on a mission to curb the problem. Many customers order
industrial battery chargers from me and when I ask them what AC
line that have, I get "220, I guess." alot. In the US there is NO
220V, its 120/208/240/480. The power feed makes a BIG difference
to the equipment I make, and I need to get an accurate answer.
BTW, 3 phase power is used mostly in very heavy industrial areas.