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How do you drop voltage coming into a building just a few volts....It is just a bit too high and the power company says there is not much more they can do..............I am maxing out at 256 volts?
Wiki User
∙ 12y ago
First thing to do is check your meter against a known voltage supply and make sure that the meter is zeroed out. On analog meters the needle can be adjust to the zero point on the scale.
The chances are that you are very close to the supply transformer. The voltages are high in these locations to compensate for voltage drop further down the line. Some one on the end of the line may have complained about low voltage and this is why the voltage was boosted.
If there are primary taps on the transformer they can be adjusted to lower the secondary voltage output.
The power company usually does not believe the customer when the say the voltage is high or low. Check your 120 volts. Request that they send out one of their representatives to check your voltage. State that light bulbs are blowing frequently and not reaching their specified life. If your 240 voltage is high, the 120 volts will also be high.
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If all that fails to correct the problem, you can install a 1 to 1 transformer with multiple taps prior to your main service panel. This will allow you to slightly reduce your voltage. This is not a job for an amateur. If properly sized and installed, the transformer will probably outlast any other piece of equipment. If improperly sized and installed, it can be a hazard and possibly deadly. -- Sparkfighter
Wiki User
∙ 12y ago
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First check voltage at the main and make sure you have 220 volts coming in. Check the voltage at both peak and off peak hours. If you find low voltage at the main lugs contact you local utility provider.
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