Electrical Troubleshooting

You have a loose connection somewhere. It is very common especially if your wiring is aluminum, Because when amperage flows through a conductor it heats up, when something heats ups and cools off it expands and contracts, aluminum has a lower melting temp. than copper there for it expands more so than copper so it will loosen up connections more so than copper...

Tripped GFCI..

the wide open throttle switch sends a signl at wide open throttle the the ecm to richen the mixture by widening the injector pulse, keeping the injector open a bit longer

You need to ask more specific questions to get the right answer.

between the battery and the intake side of the motor. below the battery

The Big Chewy Meatball is located under the front passenger seat, and has been there for no less than six months.

where is the ecm unit in a 1997 Chevy Malibu 3.1 6 cly

You would wire them in series. This means: Connect one battery's positive pole directly to the other battery's negative pole. Use the other two unused battery poles (one positive and one negative) to apply voltage to your circuit. The applied voltage will be 24 volts.

Use exactly what the owners manual recommends and nothing else. More than likely use 10W-30 in the summer and 5W-30 in the winter.

The GMA series of fuse is a fast acting glass tube fuse. The dimensions are 5 X 20 mm. This series of fuse's amperage span is from 63 mA right up to 8 amps. I would suggest that your fuse is rated at 250 mA or (1/4 of an amp) with a 250 volt rating.

A 250 MCM copper conductor with a insulation factor of 75 or 90 degrees C is rated at 255 and 265 amps respectively. This conductor can only be load to 80% capacity which allows a working current of 204 and 212 amps respectively. To obtain the full capacity of 250 amps a 350 MCM conductor will be needed. The amp rating for a 350 MCM conductor with an insulation factor of 90 degrees C is 325 amps. 325 x .8 = 260 amps.

All batteries connected in series have additive voltages. All same voltage batteries connected in parallel have the same voltage as one of the parallel battery but their amp hour capacity is increased.

Example series wound batteries of four 1.5v batteries, would lite a big 6v flashlight. (all 1.5v batteries = Et= 1.5v x4=6volts). That is the big square battery to lite square flashlights.

Yes, just reverse the start winding circuit.

If a light bulb is handled roughly before it was installed, the filament holder could have been weakened. Another reason that bulbs burn out before their time is that they are being submitted to a higher voltage than the bulb rated for.

Remove the power then remove the fuse. With an ohmmeter put the leads on both ends and read the meter. If it shows "zero" then the fuse is good and can conduct electricity. If it shows anything else than the fuse is defective and needs to be replaced.

No you cant, simply because the rain will cause a short to ground causing low insulation (megger results)... The only way is to make sure the phase you are testing is dry and no path from phase to ground is present. usually drying the phase the sanding it down while keeping it covered will give you more realistic results or you can just wait till the rain stops :)

Transformer LTC's are spec'd as being a certain percentage of the total - very often +/- 10%. So if you have a transformer with a primary of 100kV and a secondary of 30kV nominal with a lowside LTC, the LTC can adjust the lowside from 27kV - 33kV.

Depending on the type of LTC, there may be different number of steps for this 20% range. Usually these are broken up evenly, so if you have 33 steps - up 16, down 16, and a nominal tap, each tap is 1/16th of 10 percent of nominal lowside voltage; in this case 187.5 volts.

You can get away with a 30% or so larger capacitor.

1. Over load,2 Single pahse situation, 3. misalgnment, 4. Wornout bearing

If the menu is also upside down then get it serviced by the manufacturer. If the menu is ok but the picture is upside down, then the issue could be with set top box, or transmission service. You may have to do factory reset as per the manual.

On a digital multi-meter the black lead connects to the common (COM) port in the meter.

Isolation switches can be closed with loads connected. The isolation switch should not be opened under load unless the switch is load rated. This information can be found on the isolation switch's cover as to the amount of current that can be safely interrupted.

1. Describe the electrical systems you have worked on and how did you get your training?

2. What is your experience with electrical schematics?

3. What is your experience with ladder logic?

4. Describe the malfunctions you have experienced with PLC hardware?

5. Describe a tough electrical troubleshooting problem you have experienced, and briefly explain the steps you used to solve the problem.

6. What is the difference between a digital signal and an analog signal?

7. How often do you use a personal computer in a typical day? What do you do with it?

8. Describe a process problem you have experienced and how did you solve it?

9. Give an example of a tough loop you had to tune. What were the problems? And how did you solve them?

10. What brands of VFD's are you familiar with.

11. Describe some of the malfunctions associated with VFD's, and give an example of a tough VFD problem you had to solve.

12a. Using Ladder logic, write a program that will START and STOP a motor with momentary START and STOP push buttons. (Provide a sheet of paper)

12b. Add ladder logic that will turn the motor OFF after running for two minutes.

13. Describe the steps you take to troubleshoot a 3 phase, 480 volt motor that continually trips the heaters.

14a. Why is the earth pin in a 3-pin plug the longest and the thickest?

14b. Explain the purpose of grounding.

15. Describe a control panel you wired, designed, or modified. What was the purpose of the panel and state each component you used.

16. Describe the difference between a sourcing input and a sinking input.

17. Why do you want this job?

PWR 1)sensitivity of ELCB

PWR 2)about MCB ratings

PWR 3)earth resistance and earth compounds

PWR 4)what is LDR

PWR 5)your electrical activity in your society

PWR 5)CONSTRUCTION OF CAPACITOR

PWR 6)transformer and related formulas

PWR 7)industrial lightings

PWR 8)what is the nature of electrons

PWR 9)use of ballast in tube light

PWR 10)CABLE SIZE AND AMPERE RATINGS

The star point or wye voltage of a 480 volt three phase four wire system is 277 volts. The 480 voltage is divided by the sq root of 3 (for 3 phases). The sq root of 3 is 1.73. 480 volts/1.73 = 277 volts. The same formula is used on all three phase four wire systems. 208 volts /1.73 = 120 volts, 416 volts /1.73 = 240 volts, 600 volts / 1.73 = 347 volts.