Jim do you read the posts ahead of yours?Originally posted by jimwalker:
POCO do have what i believe is plus or minus 10 volts.
Am thinking this allowed as low as 110 to high as 130 .I might be off on those numbers so check with local poco.
Plus 5% of 120 is 126, if you are seeing 130 you should call the POCO.Originally posted by charlie:
10% seems high to me, are you sure or is this "common knowledge"? We are held to plus or minus 5% of nominal with a few exceptions but never as much as 10%.
Service Voltage allowable ranges.Voltage Range
The American National Standard ANSI C84.1(1) establishes nominal voltage ratings and tolerances for 60-hertz (alternating current, AC) electric power systems above 100 volts and through 230, 000 volts. Voltage operating ranges are recommended for two voltage categories:
1) The service voltage, typically the point of connection between utility and customer.
2) The utilization voltage, typically the termination point to equipment.
The utilization voltage range takes into account a voltage drop within the end user?s distribution circuits.
ANSI C84.1 expects equipment to operate at service voltages between 95% to 105% with a utilization voltage range of 87% to 106% (120V to 600V)
Refer to ANSI C84.1 for additional operating voltage ranges.
What is a voltage fluctuation?
A voltage fluctuation occurs when there is a dip or spike in the electrical flow to your home. The state of Florida requires that utilities normally operate within a range of +/- 8 volts (112 - 128) from standard voltage (120), but FPL prefers to keep this range within +/-6 volts (114 - 126). Fluctuations of more than 6 volts may cause your lights to dim or brighten.