Hello folks, blame Google for me finding you.
I live at a very remote hot springs that came with two 30Kw diesel gensets producing three-phase 120/240 power.
I've now finished a restoration project on an old 15Kw diesel named Little Enos (because of its half-stature similarity to the big ones like the Smokey and the Bandit character).
I'm about to wire my machine shop to Little Enos by way of a Siemens three-phase service panel.
The generator has four service wires, L1, L2, L3, and L0. The L0 leg is neutral.
I get 120v from L0-L1, L0-L2 and 208V(!) from L0 to L3. (I don't understand that)
240volts are obtained from L1-L2, L1-L3, and L2-L3.
I think I understand a tiny bit about single and three phase 240, but 120v single is a puzzle.....and the issue of grounding has me thinking of Yellow Pages and a $300 service call.
The question is, since the generator is not grounded (or should it be?), do I ground the service panel? If it's not grounded by wire should it be insulated from accidental ground?
My plan is to wire the four generator wires to a weatherproof pin and sleeve Hubbel female. Then plug in 30 feet of 6-4 SOOW cable wired directly to the 100a 3ph service panel hung inside the building. From that box will hang a Medusa of ten foot SOOW cables with waterproof female connectors (thanks ebay) that will plug into smaller distribution boxes for lights, workbench plugs and for the four pieces of three phase machinery, plus and air compressor and coolant pumps, etc. (I'm a one man band, 15Kw is plenty.)
On three prong 120v plugs I would assume either L1 or L2 for power and L0 for neutral, and the ground?
My gut feeling is to treat the generator frame as ground and consider the L0 lead to be attached to it...hmmm. Have to check that....
BUT, I'm nervous about attaching a generator lead to a service panel frame, too! And if lightning strikes Little Enos between the eyes....what happens to ME that's hanging onto a lathe handle?
FWIW, I checked on bringing in power....it's $199,700 higher than a service call.
Turning diesel into mega-bytes and broadcasting by satellite.
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