220 wire basics
#1
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220 wire basics
I am comfortable with basic 120 home wireing and usually check for the hot leg or power in a 120 circut by simply touching one lead of my tester to the wire and the other to ground(metal bx sheath or box)
Is checking 220 basically the same idea with the exception that both legs are hot.
Also in our home i see the 220 dryer circut is two wire 10ga bx, is this common practise for metal bx wire or is three wire preffered.
Is checking 220 basically the same idea with the exception that both legs are hot.
Also in our home i see the 220 dryer circut is two wire 10ga bx, is this common practise for metal bx wire or is three wire preffered.
#2
I am comfortable with basic 120 home wireing and usually check for the hot leg or power in a 120 circut by simply touching one lead of my tester to the wire and the other to ground(metal bx sheath or box)
Is checking 220 basically the same idea with the exception that both legs are hot.
Is checking 220 basically the same idea with the exception that both legs are hot.
in our home i see the 220 dryer circut is two wire 10ga bx, is this common practise for metal bx wire or is three wire preffered.
Why do you ask?
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thanks for the reply's
yes ..
it is 10ga wire and the breaker is 30a, and the small silver wire is wound around the grooves in the bx jacket. however it is only 2 conductor wire, black and white with the metal bx jacket acting as ground (and or neutral?)
is this an acceptable practice?
yes ..
it is 10ga wire and the breaker is 30a, and the small silver wire is wound around the grooves in the bx jacket. however it is only 2 conductor wire, black and white with the metal bx jacket acting as ground (and or neutral?)
is this an acceptable practice?
#5
is this an acceptable practice?
It's a 240V circuit, so it "doesn't need a neutral," the thinking went. That's still true for some 240V circuits, but not as many as there once were.
If you check the installation instructions for your dryer, it probably shows alternate cords and cord connections for 3-wire and 4-wire supplies.
Do you have a dryer plugged into this circuit now? Is it working as you would like it to?
Why are you asking?
#6
and the small silver wire is wound around the grooves in the bx jacket. however it is only 2 conductor wire, black and white with the metal bx jacket acting as ground (and or neutral
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its an old dryer 25 years old and still going strong, no problems. so i am interpreting that if its a straight 240 the wiring is acceptable but i guess that when its time to replace the dryer the cable should be replaced with 10-3
also?
also?