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Electrical Wiring
Ask questions here about proper wiring and electrical installation here.
4,935 Questions
How do you troubleshoot sdh alarms?
to its simplest form, MS and RS alarams pertain to physical level problem while AU, TU, VC are paths.
How does an electric fence unit work?
A generator runs electricity through a wire thus electrifying it.
How do you connect a motor to a picaxe 18M?
It depends. If you only want to turn the motor in one direction, then you could simply use a medium power mosfet (eg:IRF530) connected to an output pin on the PICAXE, and with a backward diode around the motor.
If you need to change direction, it's best to use an L293D, which allows independent bidirectional control of two motors.
An adapter can be used. Make sure that the adapter that you use is of a capacity that it can produce the amperage that your appliance needs. An adapter too small will burn itself open and will be of no use to anyone. Remember; Watts = Amps x Volts.
How we calculate load of electrical instrument?
I am not an electrical guy....but since this question was left unanswered....i'll just put in some nonsense!!
For AC Load: VxIxPF (V=VoltageRequired, I=Current Required, PF=Power Factor) The Power Factor is normally considered to be 0.8 as a thumb rule.
For DC Load: VxI, here the power factor is consisdered to be 1, since it is a DC current
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Byeee!
What heat can a small copper coil produce at 120 volts?
The amount of heat generated by a small copper coil at 120 volts would depend on factors such as the size of the coil, its resistance, and the current flowing through it. You can use the formula P = V^2 / R to calculate the power (heat) generated, where P is power in watts, V is voltage in volts, and R is resistance in ohms.
When there is an inductive element in the circuit, the current lags behind the voltage. an ideal inductor will make the current lag behind the voltage by 90 degrees..
a capacitive element on the other hand will make the current lead the voltage (ideally by 90deg). That's why capacitors in parallel with the system are used a lot for power factor correction
When finding fault in NEXT and FEXT the problem is usually too many twists in the cable although with NEXT the problem is at the same end of the cable that generated the signal whereas with FEXT the problem occurs at the opposite end of the cable where the signal was sent.
What happens if you hook up two subs to a mono channel amp?
If you hook them up you get a lousy sound cos the gigga bites in each dont get no where. You the bass is wicked but does not last for long cos the subs create holes so obviously the subs do not work and you have to fork out more so just dont be stupid and do that to your car.
Will you produce a 3 phase voltage if you rotate a 3 phase motor physically at its specified rpm?
yes
How do you find the Electrical section of Railway Questions?
We don't yet have a main category for ''Railway" questions and there is not yet a special section for "Railway electrical" questions either.
Please ask any questions you want and put them under 'Wiring & Electricity' for now.
Other contributors will then be able to see them and, hopefully, will be able to answer them too.
If ever we get some questions on those topics we would certainly see if we can create a new category for them.
So please go ahead and ask!
What is the cable size for 55 kva genset with cable length of 56 meters?
To answer this question the voltage of the genset is needed.
Can a 3 phase contactor be wired for single phase?
Yes, L1 of the single phase supply is terminated under terminal L1 of the three phase contactor. L2 of the single phase supply is terminated under terminal L2 of the three phase contactor. A conductor from output terminal T2 is then taken to input terminal L3. The single phase load is then connected to the contactor's output terminals T1 and T3. This incorporates all three of the overload blocks on the contactor into the control circuit. With the overloads in the control circuit, if an overload occurs the magnetic contactor's holding coil will drop out and take the load off line.
What does a step-up transformer step up?
A step-up transformer steps up the voltage rather than stepping down the voltage like a normal ac wall adapter does. By stepping up the voltage it is not free electricity it allspice takes away from the available amps.
e.g.
Say you have 12V 1A AC going in to the primary coil of your step up transformer, this would result in a higher voltage and lesser amps like 24V 0.5A AC coming out of the secondary coil.
AnswerA step-up transformer steps up voltage, but it DOES NOT 'step down' current! The secondary current is determined by the load, and the primary current is then determined by the value of secondary current.
SPST stands for Single-Pole, Single-Throw, and is a designation for the switch contact arrangement that has just two terminals. As the switch is thrown, these two terminals will be either open or closed depending on the position of the handle.
No, in North America most homes are wired to a single phase transformer. That transformer is connected to a three phase power grid. Some of the newer apartment buildings and condominium complexes have three phase systems in them. Their voltages are 120/208 as compared to a homes single phase connection of 120/240 volts.
AnswerSome European countries, such as here in Cyprus, have three-phase residential supplies as standard for some reason -can't quite figure out why it should be necessary, though!
