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New Electrical Work
Electrical work ranges from the installation of new electrical components to the maintenance and repair of existing electrical infrastructure. It may also include wiring airplanes, ships and other mobile platforms.
4,938 Questions
This is a form of corrosion sometimes found on wiring or in the outlets. You need to have a licensed electrician replace the receptacles and to inspect the wiring to see if it may also need to be replaced. Either turn off the breaker or pull the fuse that supplies power to this room until it is repaired.
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Sounds like mold new one on me.
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This suggests to me that the wall holding the outlets is damp - from rising damp, roof or window-frame leaks for example.
Always be sure to switch off the breakers at the main panel before you attempt to do any work on any mains power circuit.
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.
One thing to keep in mind when you talk of upgrading an electrical service. That is that a permit will have to be taken out, inspection made and the whole house will have to be brought up to current standards of the code. This could run into a large amount of money on a 50 year old house. Contact an electrical contractor for an estimate. A good contractor will not charge for this service. If there is a fee for this service move on to someone else as this guy will try to do things on the cheap and end up usually costing you more money. Consider a small 6 circuit sub panel if there are two spare circuit holes in the existing panel. This installation would be far less costly that a new service change. A new 200 amp service should be in the neighbourhood of $2000.
That depends on what kind of appliance you plan on placing.
100 Amps sounds ample for 6 normal sockets if they are in parallel. For an item like a wasjher, dryer, oven etc.. you would need an independent circuit.
Is it possible to overload a panel with too many duplex breakers?
By duplex breaker, you mean 'tandem breaker', a special breaker designed to allow you to get more circuits into a panel that is full or almost full.
You most likely have a 'CTL' type panel in your home.
You MUST use 'CTL' breakers, or CTL tandem breakers in that panel. By design, if you look at the bus bars that your breakers snap onto, the upper 60 percent or so is different than the lower 40 percent.
The lower bus bars are designed differently so that you cannot install tandem breakers in a certain number of spaces. This prevents you from overloading the panel.
Most people at Lowe's and Home Depot do not know this and will give you anything to put into your panel. DON'T! If the CTL tandem doesn't fit, it's not supposed to. Do NOT go back to the store to get a different breaker because that one didn't fit.Call an electrician to install a larger service and panel with more capacity. Installing non-CTL breakers to cirvumvent the safety feature can cause your house to burn down.
It costs more to rebuild your home due to electrical fire, than it would have cost to have the job done right by a professional electrician.
The above answer is correct, but I would like to add there are some States that do not allow tandem breakers.
Can a child get a shock from putting a key or screwdriver into a wall outlet?
Certainly. This is why the US 2008 NEC requires "Tamper Resistant" receptacles to be installed. These receptacles attempt to prevent foreign objects being inserted into the slots. A normal plug will press into all slots at once, resulting in normal connection to the outlet. If a child attempts to put something into one slot, there is a guard blocking the slot.
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If the child was grounded (i.e. with one finger in the "ground" prong of the outlet), he would be even more electrically conductive since part of his body is near ground voltage.
If the child is holding a metal key or a metallic screwdriver, most definitely yes.
Even the "neutral" side of the outlet is not necessarily at the same voltage as the earth the child is standing on. Children are even more at risk because they are more likely to have sweat or other conductive compounds on their hands to decrease their electrical resistance.
IMPORTANT!! It only take a tenth of an amp to cause death. A study of body resistances several years ago found resistances in some people so low that a mere 30 volts could cause 0.1 amp to go through the body. If you have children in the house, I recommend that you have outlet protectors inserted into the outlets.
The phrase "electrical shock hazard" means that there is a risk of electrical shock.
Residential electrical receptacles are by design inherently safe from the occasional paper clip, screwdriver, etc. poke-in from our average kids. Most homes built after 1984 in the US have 2 "blade" prongs and one "rounded" prong. Each prong has a specific function: the "blade" prongs provide the ability for current transfer, to a device, or to a person. Both of these blades must be touched simultaneously to power a device, or produce an electrical shock.
Additionally, touching the "line" blade and the "ground" (rounded) blade can also produce current transfer and hence an electrical shock. Of the line and neutral blades, the neutral blade can be identified as the larger of the two.
Homes built before 1984 typically do not have the ground (rounded) blade and the two straight blades are commonly the same size.
Troubleshooting electrical problems in one of these homes is best left to a licensed professional.
What are the parts of a panel board?
This seems like a question from an electrical course, and is probably best answered by your course materials. It's your test question, not ours, and there won't always be someone to ask the answer of. Earn your diploma.
Volts are a measure of what characteristic of electricity?
== == Volts are a measure of electrical "pressure" differential.
What is one theory on how language was started?
Nobody really knows the exact way in which a language was produced or when or how, there are many different theories, all of which have valid points. However, language started when humans began to use sounds to identify objects and actions and began to teach these to others. From there... well it's history.
What is the minimum number of outlets in a room?
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AnsweroneThere has to be an outlet for every 12 linear feet of wall space without an entry intervening. So say you had as 12 ft. by 12 ft. room and a door was in corner. If you put an outlet on the center of each wall that would be the minimum per code.
What size ground wire is needed for 400 amp service entrance?
For a 400 amp service entrance, a grounding conductor of at least 3/0 AWG (American Wire Gauge) copper or 250 kcal (thousand circular mils) aluminum is required, in compliance with electrical codes and regulations. However, specific requirements may vary based on local codes and the specific conditions of the installation, so it's important to consult with a qualified electrician or refer to the applicable building codes for precise guidance.
What height do you fit electric sockets in UK?
The standard height is around 12" to 15" the bottom of the box above the floor but for the disabled you can install them higher but no more than 48" above the floor. Pick a height that will work for the disabled and install all of them the exact same height.
Usually a livelihood program is working with underdeveloped countries to improve their ability to make money and improve their standard of living. It is usually done in conjunction with some sort of established program.
How old do you got to be to work at the goodwill?
well everyone is saying that you need to be at least 16 but you can ask next time you are at goodwill.
Why do you want to work well with others?
Working with people is always good experience, especially when you work with teams then you gain lots of things. And it gives you experience to deal with different kind of personalities and behaviors.
How do you wire two light fixtures?
The lighting fixture should have all of the bulb's leads brought to a central point in the fixtures junction box. All of the black wires from the bulb's socket will be tied together. The same applies to the white wires from the socket.
The white wires are tied into the lighting circuit's white neutral wire and the black wires are all connected to the "hot" supply wire. Once these connections are made, the fixture can be bolted to the ceiling junction box.
How do you get rid of an electrical outlet?
Just make it a junction box. Remove the outlet, tie the blacks together under a wire nut. The the whites together under a wire nut. Tie the ground wires together under a wire nut. Push all the wires back into the outlet box and cover it with a blank cover. Paint the cover the same color as the wall. Do not sheet-rock over the outlet box. All junction boxes must be accessible.
What size wire for 250 amp service with a 175 foot run?
4/0 (4 ought) in copper will handle 250 amps. The voltage drop at 175 ft. is about 2.14 volts which should be okay.
A #12 copper conductor with an insulation factor of 90 degrees C is rated at 20 amps.
A #12 aluminium conductor with an insulation rating of 90 degrees C is rated at 15 amps.
These conductors ratings only applies to three conductors in a raceway. To apply the derate to the conductor requires the size of the raceway.
From 7 to 24 conductors in a raceway, both aluminium and copper conductor's ratings have to be reduced by .70, so 15 amps x .7 = 10.5 amps and 20 amps x .7 = 14 amps respectively.
Where can one purchase an aluminum conduit?
One could purchase aluminum conduit at home improvement retailers such as Home Depot, Lowe's or Rona. One could also order it through a wholesaler such as American Conduit.
Conduit fitting is used on metal pipes that house electrical wires. These fittings are not only to connect the various pieces together, but to keep a relatively water tight seal to the wires.
How do you identify start and run windings of a motor?
The run winding of a single phase capacitor start motor has a lower resistance than the start winding.
This is a voltage drop question. A #1 copper conductor will limit the voltage drop to 3% or less when supplying 100 amps for 200 feet on a 240 volt system. Or
a 3/0 copper conductor will limit the voltage drop to 3% or less when supplying 100 amps for 200 feet on a 120 volt system. In your question you sis not stipulate what the working voltage is.
What makes a circuit breaker go bad?
A circuit breaker can go bad from being tripped too many times. Many people don't understand that the tripping of a circuit breaker indicates a problem that needs to be corrected. They usually just reset the circuit breaker, leading to a very common second (or third, or fourth) trip. Circuit breakers tripping are for the prevention of fire due to excessive heat in the circuit. They're not supposed to be tripped repeatedly. This can wear the breaker out. Believe it or not, I've also seen circuit breakers fail to re-energize after being turned off. I speculate this was actually caused by the breaker never having been cycled (it was a main breaker), and the time elapsed since it was installed. Electrical equipment doesn't last forever. It's the same as anything else.
What size breaker do you use for a 100 amp sub panel?
A 100-A sub-panel would be fed from a 100-A breaker.
