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Electrical Wiring
Ask questions here about proper wiring and electrical installation here.
4,935 Questions
How far apart should straps be place on electrical metallic tubing conduit?
Assuming your local jurisdiction adopts the NEC as code, EMT must be fastened within 3 feet of each termination point (box, cabinet, conduit body, etc.) and every 10 feet of conduit run. Where the (horizontal run) EMT passes through a hole in a framing member is allowed to count as a support in lieu of a strap. You can place fasteners closer if you want, but not further apart.
There are two exceptions.
#1 You can increase distance "within 3 feet of a termination" to 5 feet where structural members do not readily permit fastening within 3 feet.
#2 For concealed work in finished buildings or prefinished wall panels where such securing is impractical, unbroken lengths (without couplings) of EMT shall be permitted to be fished.
Reference 2005 NFPA 70 (NEC) 358.30(A)(B)
Of course if you do not live in the US, or if your local municipality has adopted a different code or adopted the NEC with ammendments, your local law could be different. Check with the local building department to be sure.
What does the term - wire splice - mean?
A wire splice is the joining of two or more wires together. Commonly this is done with an approved wire joining nut. All slices are to be made in junction boxes to prevent fire should the wire splice become unserviceable.
The relationship between a cathode and an anode involves what?
The relationship between a cathode and an anode involves
Will a ceiling fan running at slow speed consume less electricity?
yes,certain amount of electricity is wanted for the fan to rotate.and then if the fan rotates at slow speed less amount is needed and at high speed more is needed.
GOT IT
How do you convert 115 volt into 230 volt?
The only way to do that is with a transformer. They make inline transformers that convert 230 to 115 and they simply plug in inline.
A device in a circuit that uses electrical energy to do work?
This sound like a basic Physics, or Electrical Shop' question ferom a high school student. If you really need an answer post it again or contact me and I'll supply another answer.
What is the distance from electrical outlet to the gasline?
500mm from electrical outlets to gas ponit
What type of a circuit do flashlights use?
A flashlight is a series circuit. The batteries positive end connects to the flashlights switch. The switch connects to the center pin of the light bulb. The bulb filament is connected to the center pin of the bulb and the outer metal shell of the bulb socket. The shell of the bulb socket is connected to the metal flashlight's body which returns to the negative end of the battery. Turn on the switch and you have light.
Who is the discoverer of electricity?
Electricity was first noted by the Greeks over two centuries ago. They found that rubbing items such as animal fur and amber created an attraction between them.
By the 1600s, a great number of experiments and discoveries had occurred, including the naming of the phenomenon by the Englishman, William Gilbert in 1600. He called it 'electricus' in his ground-breaking book; "Magneticisique Corporibus" (trans; On the Magnet). Gilbert was fascinated by the concept of magnetism and made many of the earliest, proven discoveries in the field.
The word 'electricus' derives from the Latin word ēlectrum, which, in turn, came from the Greek word ēlektron for amber, the very material the the ancient Greeks used to generate static electricity. In this sense, Gilbert gave credit for the original discovery to the ancient Greeks.
Further, Benjamin Franklin certainly did not discover electricity or lightning.
How is water related to electricity?
There are several ways for water to generate electricity:
- Hydroelectric Power: Water from a high location or from behind a dam flows through a turbine to turn a generator
- Wave Power: The oscillations of waves lift and lower floats which turn generators
- Tidal Power: Tides flowing in and out of narrow estuaries turn turbines
- Thermal Power: Water is turned to steam by burning fuel or nuclear energy. The stream turns a turbine to turn generators
- Geothermal Power: Water turned to steam by the Earth's heat is directed through steam turbines to turn generators
- Solar Power: Sunlight is turned to electricity by solar panels. The electricity is used to turn water to hydrogen and oxygen. The hydrogen is collected as a fuel for fuel cells.
What size wire do you need to run a 50 amp electrical box for a small shop?
Be safe and run 6 gauge wire although 8 gauge will handle 50 amps at short distances. I assume this is a 220 volt circuit and the small shop is within 100 feet of the power source. === === <><><>
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.
Ground fault circuit interrupter. Turns off the the power to the outlet, when the there is a leakage in current. example when you stick your finger in the outlet and the current leaks threw your body
What wire gauge size is the thickest 14 8 0 -33?
As far as I know there is no -33 gage wire.
If you meant + then that would be the thinnest
so 0 is the answer
Why don't mobile phones vibrate when charging?
Its a safety feature only provided by nokia. Suppose you have place your cell phone in tiny place like in table or some where else and in your absence your cell get vibration from the call than there is a chances to fall your mobile from height and your cell may get damaged. So to prevent to happen such things nokia provides this feature.
Where was the first transatlantic wireless message sent from?
I believe from England to Newfoundland.
Guglielmo Marconi, an Italian inventor, proved the feasibility of radio communication. He sent and received his first radio signal in Italy in 1895. By 1899 he flashed the first wireless signal across the English Channel and two years later received the letter "S", telegraphed from England to Newfoundland. This was the first successful transatlantic radiotelegraph message in 1902.
In 1866, Mahlon Loomis, an American dentist, successfully demonstrated "wireless telegraphy." Loomis was able to make a meter connected to one kite cause another one to move, marking the first known instance of wireless aerial communication.
Why is a series circuit not advisable to use as connection at home?
Every lamp and every appliance in your home has a rated power which can only be achieved at its rated voltage. These values are shown on an appliance's nameplate or is printed on each lamp -e.g. your lamps may be rated at 100 W / 230 V. It is, therefore, essential that every appliance is subject to its rated voltage of 230 V. This can only be achieved by connecting them in parallel with the 230-V supply. (For N America, read '120 V' for '230 V')
A secondary advantage is that, with a series circuit, only one appliance has to stop working, and all the other appliances would stop working too.
You have 230v 3 phase power can you plug a 230v single phase motor into it?
Any two legs of a three phase system are classed as single phase. So yes a single phase motor will operate when connected. Be sure to use the proper motor protection devices to control the motor.
What is the path for transmitting electric currents?
Electric currents flow from the source through the circuit and back to the source in materials called conductors.
An oil transformer is filled with PCB oil to better transfer heat from the windings to the outside case (and into the air).
What is the abbreviation for megahertz?
MHz (Hertz is named after Heinrich Rudolf Hertz, therefore is capitalised.)
What is the input or output of the light bulb?
Input to light bulb is Electricity and output is light.
