Electrical Troubleshooting

There might be 3 reasons for this:

1. The fuse in the power plug has gone.

2. There might be a damaged part of the wire.

3. The PSU might have either died or not connected properly.

"Locked Rotor Current" also called LRA which stands for Locked Rotor Amps, is commonly found on electric motor nameplates. Locked Rotor essentially means the motor is not turning. The current or amps in this case have to do with the amount of electrical energy required to start the motor. At the instant the motor is switched on, it is not turning, and draws the maximum current. As the motor starts to turn, the current goes down. This required energy is much greater than the Full Load Amps or Running Amps, which is the current drawn when the motor is running at normal speed under full load. The current required to start the motor will depend on the type of motor as well as the specified design voltage required for the motor, typically the higher the voltage, the lower the required amperage or current.

The term also applies to equipment such as Air Conditioners which have an enclosed motor inside the compressor, as well as the condenser fan(s) etc.

Depending on the type of motor, LR current can be anywhere from 3 to 8 times the normal running current, also called RLA, or running load amps.

1. Pin point the problem - what is not happening as expected.

2. Read the error messages, error codes if any from the equipment.

3. Refer the manual for troubleshooting points follow the steps provided.

4. Talk to the expert and explain the problem and inform the observed behavior of the equipment.

Usually the type of fuse is encoded into the fuse number. For example a English Electric fuse C20J, the C represents that the fuse is a cartridge type, the 20 is the amperage of the fuse and the J represents the speed of the fuse. Also the J states that the fuse is a type J fuse.

Zero watts can be installed in 1000 micro farads. Watts are the product of amperage times volts. Micro farads is a value used in talking about capacitance.

The amperage drawn from batteries is governed by the connected load. The voltage of the batteries can be one of two voltages. in parallel the 8 batteries will give you a voltage of 6 volts. In series the 8 batteries will give you a voltage of 48 volts. The amp/hour capacity of the batteries will give you the amount of current the device can draw over a specific length of time. Equation to fine amperage is I = W/E, Amps = Watts/Volts. Watts = Amps x Volts.

This is a common phenamenon when the atmosphere air is dry (generally during winter). When you are sitting inside the car for some time, you generate a static charge and it gets released when you touch metalic handle of the car

You need to first know the wattage of the motor and locked rotor current can be tested at a lab only

An Ohmmeter or the ohms function on a typical multimeter would be used to bench test a motor for a short or an open winding. First, be absolutely certain that the motor under test is disconnected from any mains. Using a low ohms scale, x1 or x10, one would expect to see some resistance across the motor. The resistance can be quite low depending on the size of the motor, but should not be zero. If it is a motor that has brushes and a commutator, rotate the shaft, with the meter connected, through a full revolution. This rotation could help identify a single defective winding in the rotor. To check the stator, remove one of the brushes so that the measurement current only passes through those windings. Of course, it would help if you have a known good motor of the same kind so that you can compare the readings.

Usually by applying a voltage to it.

First thing voltage does not flow current does. Voltage is the potential or pressure needed to make the current flow.

Current is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit. To make the current flow you have to adjust the resistance of the circuit and that would be the water in this case. Salt added to water will make the water conductive so the resistance can be adjusted thereby making the current rise or fall depending on the water solution's resistive properties. The equation that you should consider using is Amps = Volts/Resistance.

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.

Check the circuit breaker to see if it tripped.

The main rule to be followed when using an ohmmeter is to have the circuit under test de energized from the power source.

Engineers request that 5 meg ohm is the bottom limit. I use 1 meg as a bottom limit when megging conductors before they are energized. I have run motors as low as .5 meg, when the moisture is driven out by the heat of the motors operation the motors usually climbs up to about 2 meg ohms.

To check any piece of electrical equipment for a short circuit a megohm meter will be used. The common name for this piece of equipment is a megger.

Storm related electrical outages may occur for a variety of reasons, most of which are caused by lightning strikes, fallen trees, or weather related damage to the components of the electrical system. If a major storm produces severe flooding, the local electrical power may be turned off to prevent accidental electrocution and to prevent damage to the main electrical grid infrastructure.

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.

Using the remote is like having two switches in series. Both switches have to be on at the same time. Do not use the remote to turn off the fan when you want to turn the fan off with the wall switch.

Yes, unless your local electrical code or zoning ordinances prohibit it. Check with your local building officials to be sure.

However, longer wiring runs result in larger voltage drop, and wasted energy. In order to avoid this you must increase the size of the wiring, which increases the cost of the installation. It may not be cost effective depending on the size of your installation.

There is no such thing as a two phase load any more. Any two legs from a three phase system are classed as single phase. If this single phase load is connected across the generator it will induce an imbalance in the output voltages of the generator. This is one reason that single phase loads on a three phase generator should be shifted around to find the best possible balance.