...and after I looked at that I found the installation directions,which I couldn't find at 1st 
....Ben
electrical cord hook up on dryer?
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electrical cord hook up on dryer?
just went and bought a new dryer. I want to make sure I wire up the power cord the right way. there are 3 terminals one red wire,one white wire,and one black wire. white and red would be power,right? and black would be ground? or should I just put the ground wire on the connector where the dryer is ground to the back of the dryer? this is a green wire. thanks for the help,Ben
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From: Lafayette, IN
You're talking about a 240V setup. RED and BLACK are "hot" wires, GREEN is the equipment (safety) ground, and WHITE is the neutral for any lighting or accessories on the drier that run on 120V. If it were a straight 240V appliance, there would be no white wire because the red and black are 180 degrees out of phase, so they "return" each others' electricity. One of them is at +120VAC and the other at -120VAC, which is a 240V difference. The white is at 0, so either of the red or black used with the white is 120V difference.
Make sure you know what you're doing...240V can throw you around, or heat the house until the guys in red trucks show up.
Jason
Make sure you know what you're doing...240V can throw you around, or heat the house until the guys in red trucks show up.
Jason
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From: Lafayette, IN
Originally Posted by Old Fart
Close, Jason - but in a 240V single phase application, both "hot" conductors are +120V
Sure, a multimeter will read both as +120 relative to the neutral or ground, but they're really not, otherwise you would not be able to get 240V. The multimeter won't differentiate positive and negative on AC voltage (at least mine doesn't). If the potential between them is 240V (which it is), then they can not both be at +120V. If they were both at +120V relative to the same ground, the potential between them would be 0.
Jason (spent a little time in EE)
Last edited by jroehl; Nov 6, 2004 at 04:41 PM.
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For a little more clarification, since the current is AC or Alternating Current, + and - designations don't really have much meaning. Relative to ground both the red and black wires will go positive and negative 60 times a second. At any instant in time, when one wire is positive the other wire will be negative. Also the two wires are 180 degrees out of phase so what we are talking about here is the RMS voltage. Both wires cross 0V at the same time. When one is +10V to ground the other will be -10V to ground. ETC.
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So that all means that the red wire and the black wire will both knock the crap outta me, and grabbing both wires at the same time would probably not be a good idea? 
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Thanks, 76supercab2. That's what I was getting at. You 'splained it a little better than I did. (And for those who don't know, RMS voltage = root means squared voltage, roughly 2/3 of peak voltage, if memory serves me.)
Jason
Jason
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Originally Posted by Rocky J
So that all means that the red wire and the black wire will both knock the crap outta me, and grabbing both wires at the same time would probably not be a good idea?
Yup, a VERY bad idea. The way my instructor explained it that stuck for me is that if you touch the black wire, that's the color your widow's going to be wearing at your funeral!
Also if you check in the breaker box you'll probably find that the white and green wires are both tied to the same electrical point....ground. The white is return for your load power. The green is the case ground and meant to hold the chassis of the load device at ground potential to prevent shock hazards. Even though the white wire is connected to ground, it does carry current and if the wire is broken or cut while the load is on there will be voltage at the break. IE if you cut the white wire while the appliance is on you'll get a shock.
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