Electrical Troubleshooting

Dont mess with transformers if u dont know how to read a wiring diagram It is easy if u know your relation to each of the phases and neutral and ground

Are you referring to a meter?.... if so, set it to the closest higher voltage on the meter (usually 600VAC but sometimes 300VAC depending on the brand and model)

closing coil 24 vdc

There may be an "open neutral" somewhere either in your breaker panel or in the meter base.

Contact a qualified electrician to help solve the problem. An open neutral causes one leg of the electrical service to be "low" voltage, while the other leg goes "high". That can result in premature failure of electrical components, such as light bulbs, electronic devices and electric motors.

Yes, this simple primitive tool is the best diagnostic tool for most wiring problems.

LRA stands for locked rotor amps. It is the very high current drawn by a motor at the instant it receives power, but before the motor has started to turn.

Typical LRA values can be anywhere between 3 and 8 times the full-load running current.

A Multimeter is an electronic instrument, every electronic technician and engineer’s widely used piece of test equipment. A multimeter is mainly used to measure the three basic electrical characteristics of voltage, current, and resistance.

There are two types of multimeters:

Analog Multimeter: The Analog Multimeter or VOM (Volt-Ohm-Milliammeter) is constructed using a moving coil meter and a pointer to indicate the reading on the scale.

Digital Multimeter: We mostly used a multimeter is a digital multimeter (DMM). The DMM performs all functions from AC to DC other than analog. It has two probes positive and negative indicated with black and red color as shown in the figure.

there are some best multimeters for HVAC.

If the power strip has an indicator light it uses a very minimal amount of power, especially if it's a neon or LED indicator. If the power strip uses either of those, the power use is effectively unmeasurable. Incandescent indicator lights use a very small amount of power.

But in reality, indicator lights are off when the power is off, so actually power strips use no power when they are off.

The answer depends entirely on the wattage of bulb used! You can find the amperage of your light by using the Power Law which states that amperage = wattage divided by voltage. Thus a 60 watt bulb on a 120 volt system would draw .5 or 1/2 an amp.

It sounds like you are describing either a slimline or dc recessed base type of fluorescent fixture. There is a wiring diagram on the ballast of both of these types of fixtures. Do your wiring the same as what is shown and you will have no problem.

find an operator and try to find some answers as to what the machine is actually doing

it is not wise to remove this device it is in place for your safety it is also wise to note over time these device do false trip for no reason.Some will trip with an induction load like a fridge . have it tested .........................

Don't know what you mean by back wire, but most GFCI outlets have a circuit to attach additional outlets that will be protected by the GFCI. Keep total load in minds.

The wiring in a building, is designed to take the current to devices, when working properly. If a device develops a short circuit, the current is massive and unlimited.

Passing massive amounts of current through thin cables will make them heat up, just like the filament in a lamp. This will cause a fire.

A fuse is simply a thin wire, that is designed to burn up, when too much current flows through it. It is a controlled burn, inside a specially designed container, at a specific location. As the fuse is in the supply line, when it breaks, the power is also broken and everything returns to a safe situation.

A breaker uses a bi-metal strip or coil to monitor the current and tip a switch when too much current flows. Breakers however can be reset and not normally destroyed by a fault.

An adapter is needed to use a North American shaver in Europe. European outlets are a different size along with a different voltage that you shaver is rated for. An Adapter will take care of both of these problems.

It has momentum and the rotor is free to keep turning in the motor. It slows gradually due to friction of the rotor and the blades moving through air. If there were no friction it would never stop. The bad part is that there would be no air either so you wouldn't care.

Usually electronics will operate at higher or lower voltages. You could use 3 1.1/2 volt batteries for a total 4.5 volts or 4- 1.12 volt batteries for a total 6.0 volts. The former is safer and won't let the smoke out. The device probably will operate at 6.0 volts instead of 5.0v OK but if you let the smoke out, it will never work again as all electronic equipment relies on the smoke inside to work properly. You let it out and it never works again

You can check the input and output in PLC by using the force command. Through the programming instrument the input can be forced opened or forced closed depending on what the status of the contacts are set to. This can also be done with the output contacts.

Yes but you need a attentuator to cut signal down to input levels. You can get them at radio shack.

When flexible cords are talked about the ground wire is in the conductor count. A four wire cord will have black, red, white, and green coloured wires in the flexible cable set. A three wire cord will have a black, white and green coloured wires in the cable set. To use a four wire cord to carry 220 volts just use the black, red and green wires. Connect to the cord ends. Black and red to the outside blade terminal screws and the green wire to the green ground screw. To use a three wire cord to carry 220 volts just use all of the wires. Black and white to the outside blade terminal screws and the green wire to the green ground screw.

If a cable insulation is described as RHW, you would be able to use the cable for what maximum temperature?

A. 194°FB. 140°FC. 86°FD. 167°F

Here are some places:(Add an "h" prior to the address when you copy and paste)

ttp://hsinchang.gmc.globalmarket.com/products/details/transformer-101798.html

ttp://www.unelco.dk/files/pdf/UNELCO_Katalog_2.pdf

ttp://www.eckind.com/product_2615500_150w-12v-ce-cb.htm

To inhibit is to "prevent or stop something from happening".

Dielectric grease would be a better choice.