The problems I have with diesels are as follow:
The fuel goes stale. You can treat it but it still has problems with age.
Most of us want a large tank, but with just short weekly exercise cycles that
fuel might be in the tank for years.
The fuel poses a hazardous clean up risk. Both with refueling and with a fuel
line break. Huge problem if you are in a national forest or really any public
land.
Fuels can gel and make the generator not start in zero and below zero
conditions. Also diesels are just notoriously hard to start when cold.
All liquid cooled generators I have ever seen have block heaters, but Murphy
says that block heaters and engine start batteries will always fail prior to
actually needing the generator. I think I have had more trouble with the
trickle chargers for the engine start batts than anything else. That is why I
remote the battery inside to a heated area and put a better charger on it than
comes with the generator.
But you can refuel them yourself.
There are tri fuel generator carburetors that will take gasoline, natural gas
and propane. To me that is the ultimate in redundant backups.
From: Nate Burke
Sent: Friday, January 31, 2020 8:14 AM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] Generator advice..
What brand Diesel generator are you using? Are they permanent or portable?
On 1/31/2020 2:51 AM, Mike Meluskey wrote:
In the islands we get lots of power outages.
Our go-to generator for a site like you described is a 12.5kw diesel
generator.
Diesel is much easier to re-fuel after a disaster (ie. Cat5 Hurricane).
I became an expert at re-fueling, oil changes, priming, clogged fuel filters,
etc. after Hurricane Maria.
People with propane/natural gas generators could not get them re-filled
easily during our 2 - 3 months with no Utility power. Generac’s did not hold up
well, lots of fried circuit boards.
Again, this was on a small island in the Caribbean. Generac natural gas
generators might be a good fit for your environment.
On 30 Jan 2020, at 18:59, Nate Burke wrote:
We've seen that too, running an (industrial) 120v garage door opener,
pulled one leg out of phase/voltage enough with the starting current that the
control board shutdown the generator (15kw diesel). It ran a 5ton 240v AC
unit cycling on and off just fine.
On 1/30/2020 4:49 PM, Adam Moffett wrote:
Using 240V AC may help with that.
We had trouble where the generator had way more load on one hot leg than
the other. It ran rough and stalled often.
On 1/30/2020 5:14 PM, Chuck McCown wrote:
The only reason you might have trouble is the air conditioning starting
load. I have seen them cause a generator to stall and die before.
Sent from my iPhone
On Jan 30, 2020, at 2:16 PM, Josh Baird mailto:[email protected]
wrote:
We're shopping for a generator for one of our larger POP's. The
electrical contractor is recommending this:
https://www.generac.com/all-products/generators/home-backup-generators/guardian-series/22kw-7043-whole-house-switch-wifi-enabled
This would be supporting 4 30A circuits (powering 4 APC UPS) that are
currently drawing about 30A between them (powering network gear and servers).
There is also one of the on-wall indoor/outdoor air conditioners in this room -
unsure what it's drawing.
The contractor also seems to think that this generator, with a second
transfer switch can power the remainder of the small building which includes
some lighting, a refrigerator and some small electronics like PC's, etc.
Can someone who actually knows something about generators and this
kind of stuff give me some advice here? Will this generator support our load
and not fall over?
Thanks!
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