02-18-2018, 04:54 AM
How it works: supply variations in a mixed-feed AC system cause the 60Hz sine to drift slightly; this drift can be measured to determine source/sink imbalance. Or something like that.
Does it work: yes ... but modern HELCO digital meters can (supposedly) detect any backfeed into the grid. Old-style mechanical meters will simply run backwards, resulting in a lower bill.
Practical application: put this on the same phase as the fridge, the compressor will eat the difference and help to buffer it from being discovered by HELCO.
Does it work: yes ... but modern HELCO digital meters can (supposedly) detect any backfeed into the grid. Old-style mechanical meters will simply run backwards, resulting in a lower bill.
Practical application: put this on the same phase as the fridge, the compressor will eat the difference and help to buffer it from being discovered by HELCO.