3 ms·
"To do this, a switch needs to physically disconnect the utility meter from the main loads panel ... this is the hard part. It doesn't need to be. You can jus
by rsync 3y ago
"To do this, a switch needs to physically disconnect the utility meter from the main loads panel ... this is the hard part.
It doesn't need to be.
You can just use a physical interlock and toggle between utility breaker and (any input you want) breaker.
You can do this on an integrated meter panel.
This is a dead-simple configuration that you can comprehend - and verify - with your own eyes.
The lock-out switch is NEC compliant, utility approved, etc.:
https://www.amazon.com/Generator-Interlock-Compatible-Homeline-SD200SA/dp/B0BZCHNM3Y/ https://www.amazon.com/Generator-Interlock-Compatible-Homeli...
Yes, you do lose all power for a second or two but ... so much simpler and comprehensible than an ATX solution.
- mindslight 3y agoFor a generator, yes. Is it currently possible to do this with a battery setup, for which its normal state is to feed power to the grid with anti-islanding? Either you'd need two power connections to the panel - one for the every day anti-islanded backfeed, and then a second with the physical lockout to a different inverter output that operates without the grid. Or the lockout on the main breaker would need to control a logic-level switch that told the inverter to disable anti-islanding, for power flowing through a separate non-locked-out breaker. This would seem like a better solution, but the inverter/battery manufacturer would have to design for it and get NRTL approval.