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Electrical Wiring

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4,935 Questions

How do you draw aparallelciurcut with 2 light bulbs and a closed switch that controls one light?

Draw two parallel vertical lines on a piece of paper. Visualize these as a left side and a right side of an upright ladder. The left side will be called the "hot" wire and the right side will be the neutral wire. The cross pieces in this diagram will be the rungs of the ladder. Draw a line from the left hand side of the ladder to the right hand side of the ladder. Insert into this rung one of the two light bulbs. Below this rung copy the above rung with the second light bulb. Into this second rung insert a switch in series with the second bulb. When the complete circuit is powered on the first bulb will light and depending on the position of the switch in the second rung, the second bulb will light if the switch is closed. If the switch in the second rung is open the bulb will not light.

This will be the drawing that your scenario suggests.

Can you plug a 250v CPU into a 110v socket?

No, the plug and socket are incompatible, and even if you changed the plug, the unit would not operate on such alow voltage.

What are the colours of the positive and the negative terminals of the rheostat?

A rheostat is simply a variable resistor used to control current. It does not have a positive or a negative terminal.

What are the factors that affect resistance and their units?

Resistance is directly-proportional to a material's length and resistivity, and inversely-proportional to its cross-sectional area.

In SI, length is measured in metres, cross-sectional area is measured in square metres, and resistivity is measured in ohm metres.

In North-American units, for conductors of circular cross-section, length is measured in feet, cross-sectional area is measured in circular mils, and resistivity is measured in ohm circular mils per foot (although, for some strange reason, it is often written as 'ohms per circular mil foot', which doesn't make much sense if you apply unit analysis!).

Note that resistivity is affected by temperature, so figures for resistivity are always quoted at specific (usual ambient) temperatures. So temperature indirectly affects resistance.

Can the scale blaster wiring be installed vertical?

Looking at the instruction sheet of the unit, I would say that the vertical / horizontal position makes no difference in its operation. It looks like wire is wrapped around the pipe to form a DC coil and it is the flux from this coil is what penetrates the pipe. So again the coil does not know what position it is in, so should work in any position.

What do you typically find in a ganged switch box?

Usually switches brought together in a central spot for convenience. There could be one or more supply feeder and load connections to each device connected to the bottom side of the switches. In the back of the box there will be all of the cable ground connected together and placed under the ground set screw.

Can electricity flow through iron gold?

I don't know what "iron gold" is, but electricity will flow through any metal pretty well.

What is Ml wiring method electrical?

MI is known as Mineral Insulated cable. The cable has the ability to withstand very high ambient temperatures and for years it was used on fire alarm systems. With proper gland ends installed it can also be used in explosion proof areas. It looks like copper tubing with wires inside of it. Around the wires is a magnesium oxide powder that is used as insulation to keep the wires from touching the outside protective copper sheath. It is now only used in specifically engineered jobs as the price of the cable is extremely high due to all of the copper used in its construction.

Is 200Mohms an acceptable result when carrying out an insulation resistance live-live test on a shower block?

If you have 200 megohms on an insulation test of a conductor it is more than enough to feel safe about applying a voltage to the conductor with out it shorting to ground.

Can you put a 60amp breaker and a 50amp breaker on a 60amp subpanel just as long as they are not being used at the same time?

You can. Using these size breakers in a 60 amp sub panel might be pushing the limit for breaking the sub panels feeder breaker. The breaker feeding the sub panel will have to be no bigger than 60 amps because of the main bus bar capacity of the sub panel. It would be better to install a 100 amp sub panel and then there would be a bit of a buffer and you will have the ability to add additional small load circuits.

Can a 100 breaker box handle a 15 kw furnace?

The equation for amperage is I = W/E, Amps = Watts/Volts. The amperage for the furnace would be, Amps = 15000/240 = 62.5 amps. So to answer the question, yes a 100 amp breaker with a #4 copper conductor will be sufficient to operate a 15 kW furnace. A 70 amp breaker will work but it is cutting the edge a bit too fine as you don't need the furnace to trip off during the winter months (northern hemisphere) if you are away from your home for an extended period of time.

Which way does the current flow in a car?

The current flow is from positive to negative whereas electron flow is from negative to positive.

What ampacity should branch circuit conductors have?

Branch circuits wire sizes are governed by the connected load amperage of the circuit. The wire size ampacity then governs the size of the breaker that is used to protect the circuit from overloading.

For general home wiring circuits the conductors used are, receptacles and lighting #14 - 15 amps, dedicated circuits load dependant, hot water tank and baseboard heaters #12 - 20 amps, clothes dryer #10 - 30 amps, range #8 -- 40 amps.

Why does your doorbell not light up?

The bulb may be faulty or loose, there may be a loose wire or the battery may be in need of replacement.

Can coaxial cables run with fire alarm cables?

As long as the fire alarm cable is shielded (as it is required to be) there will not be any interference, so yes

What are the characteristics of an overhead line insulator?

The insulator has to have the insulation factor of the primary line that is connected to it. It has to have a design that will not allow moisture to pool around it. The design also should include a shape that will make it self cleaning.

Which value capacitors is more effective as a filter element the larger or smaller and explain why?

In filtering applications, larger value capacitors are generally more effective because they can store more charge and thus provide better smoothing of voltage fluctuations. They have a lower equivalent series resistance (ESR) and can filter out lower frequency noise more effectively. Smaller capacitors, while useful for high-frequency filtering, are less effective in stabilizing the voltage at lower frequencies due to their limited charge storage capacity. Therefore, for general filtering purposes, larger capacitors are preferred.

What is easier to measure volts amps or watt?

If you have the right test equipment amps are the easiest to measure. A slip over the wire amp meter is easier to use than a clamp on amp meter. The other two values have to be measured by using test leads from the test equipment.

What is the visual difference if any between the hot and neutral side of a duplex outlet?

There are two visual differences between the "hot" and neutral side of a duplex receptacle. Looking at the face of the receptacle the blade sizes are different. The smaller blade is the "hot" side where as the larger blade size is the neutral.
On the reverse termination points, the "hot" wire connects to the brass coloured screw and the neural wire connects to the silver coloured screw.
The U shaped opening is for the ground blade and the reverse side, the green coloured screw is where the ground wire of the circuit connects.

Does electricity flow through stone?

Stone is a bad conductor of heat and electricity so very very less or no electricity will flow

Most stones does not conduct electricity since they are non-metallic and non-conductive especially when dry. However, when wet there is a bigger possibility to conduct electricity, but it is due to water not of the stone. On the other hand, some stones which are called gemstones or crystallized stones conduct electricity, it is called piezoelectric crystals. To give you an example of crystals, quartz, topaz,and tourmaline are known for their piezoelectric effect.

Do you have answers to electrical wiring Industrial 14th edition by Stephen Herman?

As with any instructive text book, the answers to questions in the book are found by reading the book. Usually these types of books will have questions at the end of each chapter. In the chapter that should have been read, the answers will be there. To learn the electrical trade, it is not just finding answers to questions, it is understanding what the questions are about and this can only be accomplished by reading the book.

What does ctsy-clk mean on fuse box?

It is a circuit fuse in a vehicle. The fuse is used to protect the courtesy/clock circuit.