Need to move a freestanding range/oven and have to
move wiring as well, house is 50+ years old and had a
new panel put in 2 years ago, the electrician put the range
on a 50 amp circuit and reused the old cloth wrapped wire (aluminum) I am
positive that the wire is to small
for a 50 amp circuit (appears to be in between #4 and #8) . In addition the
wiring itself is in bad condition (covering is unraveling in several spots)
I need to move it and would like to rewire at the same time, the run is
approximately 50 feet, what size wiring should I use (I'm guessing #4 for
copper). What size if I use aluminum again?
This is Turtle.
You first need to look at the tag of the oven and get the amps required to run
to it first. Then post back here and the fellows here
can give you a straight answer with out guessing.
OK here is your guess:
50 amp breaker / 50 feet run and the guess is #6 Copper wire in any kind made /
#8 wire in THW, THWN, and THHN. In Al. #4 wire in
any type wire / #6 Al. Wire In THW, THWN, and THHN .
Now with all this guessing going on here. What does the breaker need to be to
correct for the oven?
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Typical range is 50 amps, 240v single phase, 4 wire now days in some places.
3 wire in others. I believe that 6 AL or 8 copper is the correct size. You
should look for SER or SEU cable depending on what your locality requires.
#6 copper cable for a 50A circuit, so that would probably be #4 aluminum.
You can easily go up to 60A and *maybe* even 70A with #6 individual copper
wires in conduit.
The existing wires could be tinned copper. My dryer was on a 45A circuit
with a range outlet when I moved into my 50 y.o. house, and it had
silver-colored #8 copper cable with rubber and cloth covered hot wires. I
think it was old type SE service entrance cable.
#8 copper NM-B cable with a 40A breaker is really common for electric ranges.
Checked the range, it requires a 50 amp 240v circuit according to tag
I went to a local Electrical supply house and was told that I could
use 6/3 Aluminum SEU cable without a problem, does this sound
ok or should I go for 4/3??? (I noticed that most of the 4 prong range
50 amp receptacles are only rated for 6/3 AL/Cu connections)
Benefit of aluminum - it's lighter.
Drawback - it's thicker and...
when you sell the buyer's inspector might point out the use of aluminum wire
without adding that it's perfectly acceptable for use in high-load single
They love pulling that stunt.
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