North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Looking for power metering equipment...
Speaking on Deep Background, the Press Secretary whispered: > > > > Concur with you need wattage not amperage. There is a 'relatively' cheap > method of doing this however local electrical codes may put a damper on > this type of project. > > You put a current transformer on each branch circuit. A 'typical' current > transformer will generate 1Millivolt per Milliampere. You then install a > A/D board in a PC and write a simple application to query each channel of > the A/D. or purchase a commercially available SMNP datalogger. > I assume Alex is looking for a boxed solution. If not concur it's Not Rocket Science [TM-Click&Clack] to build a system. You can do the voltage sensing safely. {My too-early AM thinking is that there will be too little phase shift in an unloaded Voltage Transformer to worry about.} You'd need a VT per panel leg, but a CT per branch circuit. -- A host is a host from coast to [email protected] & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433
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