Why do well pumps, air-conditioners, welders and other electrical motor driven appliances require special consideration when sizing a generator?
A. Appliances and equipment with electric motors, especially compressors and well pumps, have a much higher start up amperage called Locked Rotor Amps (LRA), than the running amps shown on most nameplates. As a general rule of thumb is a minimum of at least twice the amperage to start a device as to run it. However, some devices can require up to 6 or 7 times the amperage to start as to run. If you have water wells, large air-conditioners, sump-pumps, or other heavy duty motor applications you need to find out what the locked rotor amps of the largest piece of equipment is. GeneratorJoe can assist you with all of your motor starting calculations and we can supply you with generator systems designed to provide the best performance and size for heavy duty motor starting applications.
A. In general, appliances with electric motors have a much higher start up amperage (LRA) requirement than operating amperage (FLA). A general rule of thumb is a minimum of at least twice the amperage to start a device as to run it. However, some devices can require up to 6 or 7 times the amperage to start as to run. It is for this reason that any residence or business with water wells, large air-conditioners, sump-pumps, or other heavy duty motor applications should consult with a knowledgeable source when sizing a generator system. ADG can assist you with all of your motor starting calculations and we can supply you with generator systems designed to provide the best performance and size for heavy-duty motor starting applications. Q. How are decibel levels calculated on generators? A. Most generator builders calculate dBA levels at full load operation. This is the honest way to report the noise level. The USA standard is based on the sound level at 21-feet and the European standard i
