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You have to backtrack and see where you have 120 volts. You likely have a loose or corroded wire connection. It is very dangerous working inside a panel so you should not do this if you are at all in doubt as to what you are doing.

Many houses use aluminum service entrance cable and the aluminum creeps in the connector over time. There is an Allen headed screw that tightens this connection, but it is obviously hot and you could get killed touching this with a metal Allen wrench. An electrician would either remove the meter which disconnects the panel or use a special insulated tool and gloves to tighten the connection.

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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

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How many 18AWG wires fit in a 1 conduit?

53


What is the difference between 43 and 53 grades of cement?

The OPC was classified into three grades, namely 33 grade, 43 grade and53 grade depending upon the strength of the cement at 28 days when tested as per IS 4031-1988. If the 28 days strength is not less than 33N/mm2, it is called 33 grade cement, if thestrength is not less than 43N/mm2, it is called 43 grade cement, and if the strength is not lessthen 53 N/mm2, it is called 53 grade cement.


The resistor in an R-L series circuit has a voltage drop of 53V and the inductor has a voltage drop of 28V what is the applied voltage of the circuit?

The applied voltage is 53+28 = 81V.


How do you put electricity in for a dryer?

I am pretty handy with wiring and have installed ceiling fans, light fixtures, and such, but I would not hesitate to pay 150 dollars for someone to run 220 volts from the breaker panel. That sounds like a bargain (especially if it includes parts) and will ensure that your wiring is safe and up to code.Pay the $150. Like tedw, I am passably competent at 110v stuff. . .but for 220 I would pay to have it done right and have the piece of mind.And, where do you live that you can get a licensed sparky to come out and do it that cheap?So you want to do electrical work that you've never done before, right next to a gas line. Gee, Davey, I dunno if that's such a good idea.I think that only way that you could summon Murphy to you any faster would be if you shouted "Hey, y'all! Watch this!" right before you set to work.I'll Nth the get a professional opinion. there are alot of variables that you might not have the knowledge to take into account. for example, does the main panel have enough capacity to add another circuit this large and if so, is the sub-panel wired properly to add such a load? the $150 sounds a little low, but if everyhting is in place to simply add a breaker to the sub panel i could see it. either way, this probably isn't something worth having your homeowners insurance policy voided over should the worst happen.posted by skatz at 11:53 AM on February 21, 2006Please keep in mind that 220V is much more inclined to kill you than 110V.Sell your dryer on craigslist and buy a gas one. It will be cheaper to run, and you won't have to do any wiring.I disagree with the other posters. I've done just this and I'm not an electrician. A basic understanding of home wiring is all that's required. I'm assuming you live in the US.From the powerlines your house is provided two wires, each carrying 120v and 180 degrees out of phase to each other. Add them together and you get 240v. You are also provided a neutral line that is grounded every so often and grounded at your house.A standard 120v outlet is supplied by one of the two rails from the power company. A 240v outlet is supplied by both of the two rails. That's all there is to it unless your dryer plug is a four prong. In that case you will have 2-120v lines, one ground, and one neutral. It's a bit redundant having ground and neutral since they are wired together in your breaker box. Nevertheless, it's straightforward. I would recommend highly a well-grounded metal conduit through which the wires should run.This is doable, talk to your local building electrical inspector. They have to approve and inspect your work.To minimise down time wire up your box and outlet and string your wire to your panel making sure it is anchored with staples/holes as required. Make appointment for inspection. Then on the day of your appointment turn off you main breaker. String your wire into your breaker panel and connect it to your breaker. Install breaker. Leave the power off until the inspector makes sure you don't have one of the hot legs to ground or something. Once it has been signed off on you can flip the main switch, the dryer breaker and then plug the dryer in. I could do the breaker panel bit in less than 20 minutes from ding dong to writing the bill, for your first time I'd allocate a least a couple hours. Try to get an afternoon appointment that way you'll have all morning to work on it.If you're reasonably competent with electrical wiring, actually configuring and wiring a 220v outlet is a no-brainer.But $150, if that includes the necessary parts, is a killer deal, and would save you the TIME. Unless you already have extra conduit, fish tape, wire lube, wire nuts, wire, conduit bender, etc., etc., it's probably more cost effective to let someone else do it.What's your free time worth? An electrician could be in and out in about 1/3 the time it might take you.Not that you want to get in his (or her, of course) way, but you might be able to watch the pro work. My electrician is really cool about explaining what's going on as he works, and it's enabled me to try my hand at some electrical work myself.Regarding Mitheral's last post, I just worked with a four-prong dryer plug yesterday. The white went to the bottom prong, red and black went to the side prongs (didn't matter which went where), and the ground went to the top prong. YMMV, as always, so I'll second his suggestion to get the book.I think it's the opposite, I've never seen a 4 prong dryer plug, but maybe it's a new thing. Watch the guy put in the breaker and you won't believe how easy it is. I've even done it without turning off the main (wiring up the new breaker, then pushing it on the bars), but I don't recomend it (this was a factory setting, where we didn't want to shut down the whole shop while we hooked up a new machine).I am a degreed electrical engineer, with a hard-won state license to practice professionally. I do most of my own house wiring, with extremely close attention paid to safety and quality (durability) of work. But I never mess with 220 volt. Hire the electrician.It's like the old gambling rule: bet what you're willing to lose. In this case you are betting your life, no kidding.Things may be different in the states; all electric dryers in Canada since they stopped wiring them direct have had four prongs: two hot legs, a neutral and the ground. Commercial stuff sometimes has three prongs if the unit is running a 230V motor. The only way residential dryers could get away with only three prongs is if they didn't ground them.Electric ranges also will have four prong plugs. The neutral is needed for the light bulbs, surface outlets and usually the clock.What aubilenon said. But you chose to spend on the electrician, instead. Pity. Gas is much more efficient.So what is the extra danger from 220v single phase? Its only 220v between the phases, any one wire is only 110V. I guess you could grab one hot in each hand, but you'd almost have to be doing it on purpose.I guess this 4 wire 220v is a new fad, our lab is moving to a new building and all the 220v outlets are 4 prong twist-locks. The building manager has a bought a whole case of 4 prong plugs to convert everybody's stuff, but the cords only have 3 wires, so what's the point?Go with the gas. Faster drying, more efficient, no wiring hassles. In the long run you'll save money too.


What is off hook current and voltage?

Off hook must be at least a 20 mA draw. The upper end is usually determined by line resistance from the CO to the phone. The normal range seems to be 25-45 mA. On hook voltage is a nominal 48V. However if you understand batteries, (in your car the battery is spec'd as 12 V but 14 V is usually what you get) 48 V is the low end and you can get as much as 56 V but due to various factors 53 V seems to be the usual normal. Off hook voltage is determined by line resistance and the actual phone. Normally 6-9 V is what you will see at the phone.