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Transformer is a separately derived source and the neutral x0 must be bonded to ground. I believe the nec also requires a ground rod as well. I dont think the generator contactor counts as a disconnecting means as described in the nec definitions
Haha. My across the street neighbors are on a different circuit and they aren't shy about showing it. It's all fair though because when the whole neighborhood is out my house is lit up like a frigging Christmas tree.
heres an off the shelf item
https://www.amazon.com/briidea-Return-Utility-Generator-Indicator/dp/B09DCWNBHW/ref=sr_1_2?crid=1NOHUF523SAZC&keywords=utility+power+ind&qid=1669936143&sprefix=utility+power+ind%2Caps%2C85&sr=8-2
otherwise, a relay on the generator input and one on the line side...
Winding primary/winding seccondary=voltage primary/ voltage secondary= current secondary/current primary
A 3 phase transformer is just 3 single phase transformers in the same case. If you lower the primary voltage the secondary voltage will drop by the winding ratio. Some transformers are...
split between 2 panels, the risk of imbalance damage is minimal, the shared leg has a risk of overload. If fuel efficiency isn't a huge concern you can always use a heater to help balance. For example, Panel 1 is wired to AB panel 2 is wired to BC and the heater dummy load is wired to CA
balanced is more efficient, you can cause head damage by running 2 legs at their maximum and nothing on the 3rd leg. The short and skinny, Balance as close as you can but dont go nuts over a few amps.
If you are isolating the main breaker for each panel with an interlock there should be no problem. What can get you into some trouble is if the grounding and bonding is not done correctly, especially if for some reason you run 1 panel on generator and the other on utility.
You also need to...
We have some big DC equipment at work, 24 and 48 vdc. Fun part is all the battery chargers are 24 vdc. The battery disconnects and jumpers are all anderson connectors and when you pull the disconnects the jumpers (think a plate with several connectors) the mating connector on the charger can...
short circuit will trip cb2
undervolt, underfrequency, reverse power, overload, permissive parallel will trip cb2 but are bypassable with battle short
low fuel, water temp, oil pressure, overvolt will kill the engine which also trips cb2
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