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Chris, Can you provide a link to the arrester you have? Thanks.

Based on Triple Jim's suggestion above, I bought 2 of these to monitor power output from the generator: http://www.amazon.com/gp/product/B00YY1KOHA?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00 i just need to find an enclosure of some sort to house them.

Yup.

Only issue I had with the building inspector is that he wanted me to connect the generator to the ground rod outside, even though it's grounded to the panel in the basement and the neutral isn't switched. I tried explaining that this didn't qualify as a separately derived system but whatever.

Building inspector was out today and signed off on my installation. I plan on sending a copy to my homeowners insurance company for them to keep on file. God forbid anything happens, but I don't want them denying a claim due to a faulty installation.

So I borrowed a Fluke 199c from a friend to look at the quality of the power coming out of the beast: I forgot to take a photo of the power coming in from the utility pole, but this is much cleaner than that. Gives me a warm fuzzy about powering sensitive electronics from it.

My 803 smokes a little white/blue at startup, but clears right away after it reaches operating temps.

I was following the ones recently sold at Ft Drum, crazy prices.

Both Central AC/Heat pumps, the well pump, refrigerator, pellet stove, home theater system, and downstairs lighting all running and the generator is only at 25%. Going to add a second sub-panel and power up some more loads. The machine is liquid cooled and don't want it wet-stacking.

What kind of hardware did you use to seal between the sensor and the nipple? Thanks

Are there available ports you were able to use, or did you have to tap into the system somewhere? Please provide a little more info if you can. Thanks.

Would it be easier just to add Arduino compatible temperature and pressure sensors somewhere in the system?

An Opamp is what I was thinking of using to not load down the circuit. If you look at http://firebottleradio.com/watts/index.html he is using an opamp circuit to read the input from a couple of current transformers to monitor KW on a generator. That is what I am using as a starting point for my...

Thanks for that help, I'll use your numbers as a starting point and verify them as much as possible.

Unless someone happens to have the data readily available? :?

Ok thanks. Obviously I have some reading to do in the tech manual so that I can work on some circuit design.

So for monitoring things like output volts, frequency, coolant temp, and oil pressure, can I just tap off of the panel meter input without loading down the circuit too much?

I am no electrician so take this advice with a grain of salt. When you're generator is not connected to your house and running in stand alone mode ( i.e.: running your welder in the back 40), you need to drive a ground rod. Ground and neutral need to be bonded together at the generator output...

Good point, I'll look into that.

Thanks. I am working on an Arduino based monitor and already have two 0-100 amp current sensors, just. Have to work on designing the rest of the circuitry. Plan is to have is plugged in to my home network and running a web server so that I can monitor the generator from my iPad.