Electrical Wiring

Well, if it has 2 male pins, then it is a EU (European) plug. If it has 3 male pins, it is a UK plug.

No!

The incoming cable needs to go to a modem that converts the incoming DSL Symbols to a digital data stream. This is then passed to the router in the form of some sort of LAN (Local Area Net) format like Ethernet.

There may be combined modem/router devices around, but I am not aware of any.

Note...I used the term "DSL symbols" because the symbol concept was originally a DSL trick, but it is now used in other non-DSL systems. DSL stands for Digital Subscriber Loop...this gets deeper and deeper as I talk about it.

For the amperage of a metal halide fixture look for the nameplate which can be found on the side of the ballast. There it will tell you what the amperage of the fixture draws. Knowing what one fixture draws will allow you to size the lighting circuit for wire and breaker sizes.

Houses generally run on single phase power. It would not make sense to convert single phase to three phase to run a house. Please restate the question.

The line current would be the same if the motor were connected in delta. The current can be based on the rule of thumb which says 7 amps must be allowed for a 1-HP single-phase motor on 240 v. A 2.2 kW motor is three times as powerful, and on a three-phase supply of the same voltage (240/415) it would draw 7 amps.

Yes two "hot" wires and a neutral can enter into a switch box. This is done on occasions where a three wire enters a switch box, drops off one circuit for the lighting and the other "hot" wire carries on to feed a receptacle circuit.

Technically it could be on the other side of the shower wall, but common sense would tell you this is not a good idea.

Have the electrical inspector do a final inspection. Pay your connection fee. The electrical inspector sends his paperwork to the utility company stating that the final inspection is done and it is safe for permanent connection. If your temporary connection has not been disconnected because of a time limit it is just paper work to show everyone concerned that a final inspection has been done.

The process of obtaining 220 volts from 380 volts is quite simple. 380 volts is a three phase four wire system voltage. The 220 volts is obtained by taking the sq. root of 3 which equals 1.73 and dividing it into the phase voltage. 380/1.73 = 220 volts. This holds true with any three phase four wire voltage system. 208/1.73 = 120 volts, 415/1.73 = 230 volts, 480/1.73 = 277 volts and 600/1.73 = 347 volts. This lower voltage is present on any of the three phase legs of the three phase system to the neutral which is grounded on a wye connection.

The voltage insulation rating is not the factor that cables need to determine how much current that a wire can carry. Most home wiring is rated at 300 volts. A 3C #10 cable is rated for 30 amps. This is the cable that is usually used on dryer connections.

A transformer has a rating that is usually expressed in KVA. This is approximately a wattage rating. It is not dangerous but it can be the cause of some concern. An appliance has a set current that is draws. This current times the voltage is the appliance's wattage. The same goes for the transformer. It only has a certain capacity to supply a specific current that is governed by its KVA (watts). Driving the transformer beyond its rated capacity tends to heat the transformer beyond its working temperature. If left in this over current draw the transformer's windings insulation will break down and the windings will short circuit. This is usually the end of a working transformer. So short answer, more watts (amps) from appliance equals burned out transformer.

Yes, an electrical receptacle can be positioned three feet from the floor. Counter top receptacles fall into this category.

This action was done in the past but not so much now. It was a case of the manufacturer installing a grounding pin in their cords while homes were still using two blade receptacles. Prior to new homes having to install a grounding receptacle, homes were wired with only two slot receptacles. These two slot receptacles just had a "hot" and neutral connection for 120 volt output supply and no accommodation for the grounding of the receptacle. The new three pin extension cords would not fit into the two blade receptacles because of the grounding pin so the home owner cut off or pulled the pin out of the plug in end of the cord. Now everything is back to normal with conversions being made from two blade to three blade receptacles. In new home installations for the past fifty years it has been mandatory to use the three blade grounding receptacles.

the binary semiconductors used to make LEDs have forward bias voltages from 1.5V to 6V depending on color (1.5V for IR-red to 6V for blue-UV) because the bandgap voltage of the semiconductor is higher than silicon. This higher bandgap is where the photons generated get their energy from.

germanium has a lower forward bias voltage of 0.2V because the bandgap voltage is lower.

metal-semiconductor contacts, like point contact diodes and schottky barrier diodes, can have forward bias voltages under 0.1V

Yes,when the neutral potential is at ground potential i.e., 0v.

The star delta motor starter circuit has to have a control voltage to energize the motor magnetic contractors. A phase failure relay monitors all three phases of the incoming supply lines. The phase failure relay also has auxiliary contacts on it. There are usually two sets of "C" form contacts. The control voltage for the starter circuit must be connected across the normally open (N.O.) contacts of one of these two sets. When the phase monitor is energized these N.O. contacts close supplying the control voltage to the circuitry of the star delta starters. If there is a phase interruption, phase reversal or phase loss, the phase failure relay will de-energize and the N.O. contacts will go back to their de-energized state. If the star delta motor starter is in use at the time, its control circuitry voltage will be lost and the delta motor magnetic contactor will open. The opening of this contactor will disconnect the motor from the failed three phase supply.

Remove the radio's covers then place a piece of wire on the back of your radio's motherboard. Connect your radio to electricity and switch it on. I hope you see a nuclear explosion.

the inspection of a part dutring and after production to assembly line a linear method of manufacturing in which the object being error deduction

Power factor is the cosine of the phase angle -i.e. the angle by which the load current lags or leads the supply voltage. Heaters are resistive loads (although not 'purely' resistive), which means that the load current is practically in phase with the supply voltage, making the resulting power very close to unity (1).

Cable twisting length is not standardized. In a typical cable there are 1.5 to 2 twists per cm in Cat-5(e) and 2 or more twists per cm in Cat-6. One cm equals 0.393701 inches. Within a single cable, each coloured pair have different twist lengths. Each cable manufacturer's twists per pair is usually different from another manufacturer.

Use the screws, they make a better and tighter connection to the wire. The holes just use a spring to hold the wire against a flat surface inside the receptacle.

If the rotation is reversed in DC generator the permanent magnetism already occurred for voltage build up process may demagnetize. this will causes no emf induce at starting time.The reversal of rotation is not affect externally excited generators

easy just tape the cables together.