Thursday, October 13, 2011

Generator is working

Last night, after getting home from work, I set to connecting our generator to the Xantrex inverter/charger. The Xantrex unit includes 2 automatic transfer switches to safely energize/de-energize power from the grid and/or a generator. If you remember, we had Eric's guys dig trenches for the gas line and the power cable from the generator. I had purchased and then buried the cable last weekend so we could get our driveway back (it was criss-crossed with the open trenches), but had not connected it at the generator or pushed it through the basement wall to the mechanical room. I have yet to find a connector that will act as a strain relief and weatherproofer for the generator end as it has surface mount lugs for attachment with just a swing-up cover for protection. If anyone has some suggestion as to what to use here, please let us know. The inverter panel end was a no-brainer, and we simply purchased the appropriate connector. The Midnite Solar connection panel makes it easy to connect/disconnect all your electrical wiring and panels to the inverter, coming pre-wired with buss bars for the various inputs and outputs.
I turned off the "power" to the inverter (shut off the battery disconnect switch) rendering the panel safe to work in. Connecting the ground, neutral and two load wires (don't forget, we're talking 240V single phase power from the generator) went quickly, and likewise at the generator. After a warm-up we turned on the output at the generator, checked the output voltage, went inside and checked the voltage on the generator input and then threw the breaker, energizing the system.
The inverter took a little while as it checked the power from the generator to confirm that it was a viable and safe power source, then switched the inverter off, powered the electrical panel from the generator power and finally, started to charge the  batteries - very cool! I have yet to connect the Xantrex Automatic Generator Controller to the generator, so we do not yet have the benefit of a "smart" generator - we have to go and manually start the generator each time we need to use it. Eventually, the system will sense when the batteries need to be recharged and will automatically start the generator and switch into charge mode. No need to go outside in my pyjamas on those cold winter mornings!

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