Electrical Troubleshooting

Noise is usually caused because of a low signal strength compared to extraneous frequencies in the same range. You can also get noise because of bad connections in your antenna, satellite or cable connection. Without knowing the characteristic of the noise, it is hard to speculate. If you have an external antenna just put your finger on the leads and see if the noise characteristic changes. Get a more powerful antenna (more gain). Tighten all antenna, cable or satellite connections. Rotate your TV and see if the noise reduces. Put a powered amp in series with antenna coax cable or satellite antenna feed. They make small amps for both (smaller than a pack of cards).

The way you check to see if an under voltage relay is wired properly is to disconnect the electrical supply. If the device that is connected to the load side of the relay does not start up or energize when the electrical supply is reconnected, then the relay is connected correctly.

The transmitter needs a audio cable run from the trans. input to the TVs audio line out connectors

A diagram for this should be in the packaging.

An analog sensor is a device that measures an analog quality (such as temperature, wind speed, sound frequency or velocity).

Many of us fail to recognize the difference between qualitative and quantitative measurements.

Quantitative descriptors are actually just the result of counting something; seventeen marbles, five folding chairs, three apples...

Qualitative descriptors are the result of estimating something; eight cups of sliced apples, a five pound bag of marbles, the current room temperature.

When we use a scale to measure something, it's called "qualitative"... or analog.

Converters are available that allow a computer to achieve a close approximation of an analog measurement, but for the computer to use the value it must first be converted to a digital signal. Inside the computer, that digital signal is all ones and zeroes, but many of them can be put together to represent a very large number.

If that doesn't help, perhaps a basic physics class or even a computer "digital logic" class might be beneficial.

Class 1 Division 1 location is designated as an area where flammable volatile liquids or liquefied flammable gases are transferred from one container to another. An example of this would be at a gas station when you put gasoline into your vehicle.The area around the pumps is class 1 div. 1.

The best way to test a motor is by doing a megger test. On the whole megger testing is non destructive. What happens is a DC voltage is applied to the motor's windings. It is an insulation test to see is the insulation has been injured in any way to cause a short circuit when normal power is applied to it. On my megger there are 3 ranges 300V, 750V, and 1000 volts. Applying the proper voltage is essential to not damaging the device you are testing. Working voltages up to 240 volts should use the 300 range. Working voltages up to 600 volts use the 750 volt range and working voltages above 600 use the 1000 volt range. As you can see if you used the 1000 volt range on a device that had a working voltage of say 24 volts you could damage the insulation just by testing it. So meggering a device is non destructive if you use the tester as its instructions tell you to.

cold batteries work better because wires conduct better the lower the temperature

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Not so, lowering the temperature of a battery will cause the batteries chemical reactions to react more slowly, so if a battery is used at a low temperature then it has less cranking power.

The wiring diagram and schematic are in the installation manual.

Its not. Its that the power company has to be able to have an easement to be able to conform to certain regulations. Like cutting the trees to make sure there are no power outages.

6 AWG

An unbalanced circuit refers to an electrical circuit where the components or loads are not symmetrically distributed, leading to unequal voltage or current across different branches. This can result in imbalances in performance, increased losses, and potential overheating of components. Unbalanced circuits are common in single-phase systems and can affect the overall efficiency and stability of electrical systems. Proper design and analysis are crucial to mitigate the negative effects of unbalanced conditions.

I = P/V is the equation. It depends what voltage the circuit has eg. I = 24000/110 or I = 24000/240 etc.

The first thing that springs to mind is that the pole faces of the contactor are dirty. If the contactor is in a position where it can get weathered, it would probably be a rust built up. Dis assemble the contactor and emery cloth the pole faces until they are shiny again. A light wiping of oil will increase the time between cleanings. If the sound is more like a chatter then the shading coil on the contactor's pole face could be cracked or broken. This small copper coil is used to induce magnetism into the pole face to hold the contactor closed as the voltage transits through the zero voltage of the sine wave cycle.

• how to hookup 1998 grand am alternator

There are only two times a fuse becomes hot. One is just after it has interrupted a high current fault. The other time when a fuse becomes hot is when the fuse holder screw has slackened from the switch's main frame. The looseness of the holder begins to create a high resistance. Sequential heating and cooling of this bad connection continues to drive the resistance higher and higher. If not found and attended to, the heat can become so intense as to burn the end of the fuse off that is situated in the faulty fuse holder.

No.
Although quite similar, golf cart batteries and automobile batteries are designed with different functions in mind.
The automobile battery is designed to provide high current for starting, but once your car starts, the battery typically isn't required to do much except to accept a recharge.
Golf cart batteries, however, are what's called a "deep cycle" battery. Deep cycle batteries typically provide lower levels of electrical current to devices for a longer time.

I believe on most alt. you have a positive hot (red) wire that usually goes to the threaded bolt on the back of the alt. and goes directly to the positive terminal on the batt. and a ground wire that goes to the frame of the alt. usually you put it between the frame of the alt. and where one of the brackets bolt up to support the alt. just pinch it between the two and run the bolt through the mounting bracket and the wire and the alt. and tighten it up and that will ground it. then you will have a plug and wiring harness that just plugs into the alt.

voltage, current, resistance, horsepower, contacts, overloads, coil, terminations, NEMA, IEC, NFPA 70 NEC, motor controls, NFPA70E . . .

A contactor is a double make/break per phase switch that opens and closes the circuit to the motor by energizing a coil (electro-magnet) using a motor control circuit (usually, but not always a lower voltage than the motor circuit). The motor control circuit goes through a normally closed set of contacts that will open if the overloads that are in series with the motor circuit sense too much current going to the motor.

Connect one lead to the COM side of the meter. Connect the other lead to the V/ohm jack on the meter. Turn the meter to the lowest voltage measuring unit such as 5 volts or 4 volts. Make sure the meter is set on dc current and not ac current. Touch the two leads to either side of the bettery. The meter should read somewhere around 1.5 volts if the battery is good.



p.s. The direct current symbol is a straight line over a few dashes

No. Emergency lights are designed to turn ON when there is a power loss or outage either from their back up battery or from an emergency generator. In buildings which do not have back up emergency generators, (which most are) emergency lights require power supplied to them 24/7 to keep their batteries charged.

To check continuity on a 25ft electrical wire by yourself with a multimeter, start by making absolutely certain that there is no connection to power on the cable, and that both ends of the cable are completely disconnected from any kind of circuit, including ground.

Double check with the meter in volts mode that there is no voltage between any conductors or between any conductor and ground. You are doing this both to protect the meter from damage and to protect yourself from death by electrocution.

Now, in ohms mode, check between each conductor and from each conductor to ground. You should have inifinity ohms.

Short two conductors to each other on one end of the cable. Repeat the ohms test on the first side. You should find one pair of conductors with zero ohms, and all of the other combinations still infinity.

Repeat the test for all the different combinations of conductors. Eventually, you will be able to identify each conductor at each end. If, for example, there were four conductors, there would be six combinations of two wires. If you only have two conductors, you can also use ground to help identify one from the other, but now you have to be careful that there is no voltage differential between the two ground points.

Your meter might be jumping because you are using a lot of electricity. This could be because you are washing or drying clothes, or even using the air conditioning system. Also, using computers a lot uses a lot of electricity, which may cause the amperage on the meter to jump.

A relay will have a control circuit and a function circuitcould be the same feed line.

One set of terminals (Hot and Load) can be activated at all times, but will not function until the control circuit is closed.

The control circuit has a Hot and a Ground--when activated either by supply hot or ground by switch. The internal coil closes allowing the function circuit to operate.

The purpose of this relay is to reduce the spike to the alternator.

It takes less current (voltage) to close the coil on the relay than it would to operate the accessory that it controls

On a 240 volt outlet, such as a dryer outlet: G is Ground, W is Neutral, X and Y are the two Hot legs.

when you hook two batteries together and keep the same voltage by connecting the POS post of batt #1 to POS post of batt #2 and the NEG post of batt #1 to the NEG post of batt #2. this will give you 12 volts of power for a longer duration.