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Lightning Auto-start?

peapvp

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Perhaps, we need to take a step back here. While you CAN hook up a military generator set to power your house, It was not designed to do so. Military Power Generation is designed to power military equipment in the field. In the field requires a Neutral Bond. This is fact.

From Peter:
These particular MEP Generators were specifically designed to have this bond. Removing this bond creates a unsafe and unstable condition within these Generators, as the Neutral here is tied to the Genset Frame together with the negative post of the 24VDC Battery Supply.


When you hook up a Military generator to a house, things change. I am an electrician. But here in Germany. Cant tell you what should or should not happen when a Generator is hooked up to a house/building in America. Everyone quotes all kinds of laws and rules that apply in America. But I am also certain, those rules can be different from state to state. So maybe you all need to go back to basics. Quote the Federal laws and rules, and maybe think about the fact that you are asking a generator designed to run in the field, and are now trying to make it compatible to "City Power", if you will.
thank you Guy,

as for any interested member:

the governing rule is:
NEC 250.30 Grounding Separately Derived Alternating-Current Systems

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For any MEP and AMMPS use the 4 pole ATS Connection!

For single phase 240/120VAC System use a 3 Pole ATS and switch N on the 3rd pole!

your Generator should have come with a ground rod - use it!

wiring from Genset has to be rated for length, temperature and at 115% of the name plate rating of Genset for the output power configuration
 
Last edited:

DieselAddict

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that’s correct if you use 2 pole ATS
You can use a isolation transformer or a 3 pole ATS and switch N on the 3rd pole
Then you can leave the Genset bond intact and be happy
Need to clarify that the neutral-ground bond can be on the generator ONLY if the generator load is NOT supplied by the main panel on/in the structure where the neutral and ground are bonded.

You can NOT by code have the bonding jumper in the generator in place if you are powering through your normal electrical panel. It is clear per NEC that only ONE bonding location can exist in a system.
 

peapvp

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Need to clarify that the neutral-ground bond can be on the generator ONLY if the generator load is NOT supplied by the main panel on/in the structure where the neutral and ground are bonded.

You can NOT by code have the bonding jumper in the generator in place if you are powering through your normal electrical panel. It is clear per NEC that only ONE bonding location can exist in a system.
The bonding of the electrical panel would have to be moved into a separate fused disconnect after the meter in this case.
Then you can switch either neutral through the ATS and only one bonding is connected at any time.
Just as the diagrams explain it.

if the local code requires a bonding of neutral and ground under any circumstances in the breaker panel, then you have only one option left and that would be a isolation transformer
 
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