The Information David gave you contains an error. It looks like a
Wattage figure is being used instead of an amperage figure. The
average all electric home has a 200 amp service. Not even an averge
size manufacturing plant would have 1700 amperage service. Read on
and I can tell you how to calculate for the proper size wire. I will
also tell you how to avoid the calculations. So if all you want to
know is what size wire to buy, then just skip to the bottom part of
Dee, If you will look at the name plate of your unit you will find
either a wattage figure or an amperage rating. If the rating is in
amps, then buy a cord accordingly. A number 12 copper conductor is
rated at 20 amps. A number 14 gage copper conductor (wire) is rated
at 15 amps. You should be able to find these size wires at your
local hardware. However, most extenstion cords are 16 or 18 gauge
(too small for what you want), and if it an inported (cheap) cord, it
may be even smaller. Stay away from these cheap cords. I suspect you
have been using an18 guage wire.
If the nameplate has only wattage then use this formula to calculate
the amperage. Divide the wattage by the voltage rating. For instance
1700 watts dividied by 120 volts would draw a amperage of 14 amps.
Most home electrical outlets (I am assuming this a 120 volt unit)
are rated at either 15 amps or 20 amps. The electrical code says that
a circuit should be loaded to not more than 80 percent of the
capacity. In the 14 amp example you would need to connect to a 20 amp
circuit (20amps circuit times .8 = 16amps capacity for circuit). The
circuit rating can be determined by the looking at the fuse or
circuit breaker rating. This of course assumes the electrician fused
the circuit with the proper size fuse.
I assume from the advise given that this unit is an 115 or 120 volt
unit. If this is the case, just buy a #12 copper cord and it will
work with any 120 volt outlet in your house. No calculations
Buy a 3 conductor cord. This cord will have a black, white and green
wire. The green wire is a grounding wire. It connects to the case
(frame) of your Kiln. The purpose of this green (case) wire is in
case the entergized wire or heating element comes in contact with the
frame of your kiln. This wire bleeds off the current and keeps you
from touching an entergized frame and receiving a shock Buy a
properly rated plug to go with your cord.
Go to an electrical supply house and buy your wire and plug. They
will walk you through this. In fact many of these places would
install the cord for you.
I have not followed this thread and may be duplicating information
you already have been given. At any rate I have given you more info
that you really wanted!! Forgive me. Contact me off line if this
does not answer your question. I work for an electrical utility.
@Joe_Dowe_TelepakDr. E. Hanuman Aspler
[ G a n o k s i n . C o m ]