JAR said:
I like the shot of the smart gas meter with all zeroes.
Once the Generac kicks on I'm guessing that will change at a rapid pace.
How noisy is it?
Nice install!
Thanks for noticing and for your comments too. :glasses:
I thought that photo told 100 vs 1000 words too. You're right about the meter soon to be spinning too.
The unit is rated at 66 dbs @ 7 meters running at full load (3600 RPMs) and 60 db in the "whisper quite" exercise mode. That is suppose to be the db level of a normal conversation. However, I have to say that even at 60 dbs, it hums quite a bit, but doesn't vibrate at all. That is in part because it's 4' off an 8' high fence that is bouncing the sound off the fence and back onto the concrete pad. The County has an < 85db noise requirement that I believe I'll pass on final inspection, but I am looking into making a couple of baffles to deflect the noise. I've placed some tall bamboo plants behind it to help reflect the sound to start with. The unit is definitely quieter than our other neighbor's gas generator which we can here it from two lots over.
Note: My understanding is that generators this size and up run at 73 dbs or louder. I think it will take a little time for us and possibly our neighbor to get use to it, but they haven't mentioned anything to us yet. This will be sort of payback for the past 12 years of their kids blasting gangster rap music at full bass - shaking our walls and glass. Their kids still live there but are grown up now. They're better neighbors, so we're hoping we can keep it that way. The contractor suggested letting them tap into the built in GFCI plug on the generator. If the noise bothered them, access to energy might change their feelings towards the unit. On your property, the noise would be a non issue as the unit's hum is synchronized / harmonically balanced.
This 20kw unit is rated at 294,000 BTUs and draws 5 to 7 inches of water column (.18-.25 psi). At 1/2 load it pulls 206 cubic ft of natural gas per hour, and at full load 294 cubic ft per hr. I was surprised to learn that running on natural gas only lets the generator max out at 18kw vs liquid propane which puts out the full 20k.
Since our house runs on electric, the gas usage to cost factor to run the generator should prove to be worth the overall expense. I'm told that the meter's base rate is $3 per month for the time I'm not running the gas. Since I have to "exercise the generator" 12 minutes per week at half load / 1800 rpms, it will be of interest to me to see what that translates into $$ and cents.
In any event, we're now free to travel the winters again without the worry of the losing our critters in the event of a power outage; and that is a hugh relief. 0
Note to Self: Unit puts out maximum of 75 amps but only for a few minutes (enough time to power down some appliances such as the dryer or range). Manufacturer recommends running, continuously, a maximum of 60 amps to avoid damaging the generator.