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Yamaha Generator problem
8x56mn,
I'm not at all familiar with your particular generator.
It's highly unlikely that you did any real damage to the thing. It sounds as though you had more draw on the house circuit than your generator was designed to handle. This would have tripped a circuit breaker or blown a fuse.
Have you checked all of the breakers and/or fuses?
If you have a manual for your generator, it should tell you where to find these safety overload devices.
What is the rated output of your generator?
If you have a model number, I might be able to help you identify and locate these safety devices.
Joel
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Yamaha Generator problem
8x56mn,
I'm assuming that you have a YAMAHA Generator. Is that correct? Is it possible that you misspelled it in your opening post?
If so, you can purchase owner's manuals for $15.00 for all Yamaha models.
You can get a service manual for $55.00
See link below
Link:
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Yamaha Generator problem
Billy,
I don't recommend switching just one leg of any 220vac motor. Whether or not there will be any current flow with one leg broken, the primary issue here is safety.
How would you safely go about repairing or replacing such a motor?
If the motor is hard-wired.......that is.....without a plug on the end of the cord........you will always have 110vac to the motor, even with the switch shut off.
Every 220vac motor should have a disconnect switch installed in the power line. When the disconnect switch is thrown to the off position, both hot legs are broken. If both legs aren't broken, a serious safety situation exists, in which electrocution is highly possible.
Since a motor is nothing more than a group of windings, current can flow through the motor, even if the motor isn't turning.
Joel
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Yamaha Generator problem
KThompson,
I'm not sure that I would consider this thread as being hijacked, as the conversation is relevant to all things that could cause a problem with any generator setup.
I was called to do a repair on a dental chair, which had caught on fire in a dental office. I quickly identified the problem and repaired it.
The dentist had kicked the plug and broken the wires on the cord. He removed the plug, trimmed the broken cord, and then re-installed the plug.......INCORRECTLY. POOF! Flames shot out, which burned his chair and his carpet.
On any 110vac plug, there are three wires.....black, white, and green.
Black (Hot) always goes on the gold terminal in the plug, or on the narrow male spade.
White (Neutral) always goes on the silver terminal in the plug, or on the wider male spade.
Green (Ground) is installed on the green screw in the plug, or on the round male ground connector.
Any switch that is installed in a 110vac line, such as a lamp, should be installed in the BLACK line....or the hot wire.
Any switch installed in a 220vac circuit should always break both the L1 and L2 (both hot) lines.
And a word of caution for those who run back-up generators........
Any or all of your sensitive electronic devices may be destroyed by your generator, unless your generator has a quality voltage regulator installed on it.
Some generators do not have this.
Without this voltage regulator, a sharp voltage spike from your generator will fry your television, computer and alarm clocks, as well as anything else in your home that contains digital circuitry.....such as the microwave display panel, etc.
Even a large voltage spike will not harm your blower motor on your furnace, but it could easily take out the circuit board that controls it.
When you purchase a generator, spend the extra money to get yourself a quality machine that regulates the output to a very high degree.
Joel
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Yamaha Generator problem
Billy,
Nothing will happen......until somebody attempts to work on the motor, with the belief that the power is off.
Voltage Feedback is another possibility, which, under certain circumstances, occurs when a motor fails.
This is more of a safety issue than anything else, but it's also possible that if both lines aren't switched, the owner of the device could be in violation of the law.
Any resulting injury could be very costly, in either case.
Joel
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Yamaha Generator problem
Billy,
I would like to clear up some of the questions that have arisen under this topic.
Please understand that under normal conditions, most people would never notice a problem with any motor while it's hooked up to the utility power.
However, when operating a backup generator, it is highly important that we isolate all of the circuits and that we eliminate anything that we don't want to power.
In many cases, the power going to the garage, or workshop, comes from a single breaker located inside the home. All of the outlets and lights in the shop will then be powered from this single breaker.
If a person wants to have power in the shop, (to power a heat lamp, heated pet bowl, block heater, etc.) when the power is out, it is necessary have this electrical line powered by the backup generator.
If there is anything on that circuit that could draw current when it is not intended to operate, it could greatly affect the performance and operation of the backup generator.
By switching just one leg of any 220vac device, such as a table saw, drill press, or welder, it's possible that any or all of these devices could put a unintended load on the backup generator.
While this is not normally going to happen, the idea behind having a backup generator is to provide a sure source of power when the utility power is out. Eliminating any possible problems with the backup generator is highly desirable, due to the fact that you don't want to be troubleshooting the circuitry while the family is freezing their butts off, or are unable to use draw water from the well.
By breaking both legs on all 220vac devices, there is no possible way any leakage current in those devices would cause a problem.
The whole idea here is to create a situation in which you are POSITIVE that you'll be able to make your own power when the power goes out.
Troubleshooting a power draw problem at -40 degrees is no danged fun. Worse yet, is having to troubleshoot a power problem when the roof is gone, trees have fallen on your vehicle, and the cattle have gotten out of the fence. There are more important things to do than to spend time fixing something that never should have been a problem to begin with.
Joel
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