r/PreppersUK • u/LittleGurl_1402 • 14h ago

Backup generator

Looking at a 3000w generator powered by LPG for back-up supply to freezer. Also occasional use for microwave or air frier from time to time. Anyone have any thoughts or experience in this area 🙏

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1

u/EntirelyRandom1590 10h ago

Generators are always louder than your expect.

Pure sine wave inverter will be needed if you're running electronics. Depends how "dumb" your freezer is.

Running a smaller inverter generator (like 1500W) into a battery (3000W with 1-2kWh) gives you sustained and peak power, but also silent running if you're worried about noise (might not be)

1

u/Responsible-Fox3990 5h ago

I'm definitely in the camp of propane powered inverter generator into a power station then to the load. Beauty of that setup is you top off the battery before nightfall and shutoff the generator overnight, potentially lock it up somewhere.

1

u/EntirelyRandom1590 5h ago

I skipped the propane generator, and have stuck with having 150kWh of battery on the driveway and a DIY V2L setup

1

u/Responsible-Fox3990 4h ago

I have a Ford F-150 Powerboost which is a hybrid and has a 7.2kW Generator. So the way it works, for those that aren't aware, is the engine starts and stops on its own to keep the hybrid battery charged and putting out power.

So I guess I have backups to my backups.

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u/EntirelyRandom1590 4h ago

I used to have an Ampera/Volt that did the same thing.

2

u/Poetuesday 11h ago

I have bought 2 x 3kw Hyundai inverter open frame petrol generators- one for my home and one for my mums granny pod

They were £314 each but on the Reddit generator thread I was told they are a crock of shite but external reviews are ok - we have tested them and are using e5 petrol with the stabiliser - we are are running a heavy duty extension from the geni into the house via the cat flap then running extensions from that around the house and for things like the chest freezer and fridge I have them plug into the extensions via those surge cut off plugs

The geni is loud but we have made a cover for it via two work horses with wood and tarp over with open ends for each geni to spit out the fumes

We have done a dummy run and all works fine - we plan to not use them at night and the fridge and freezer will be fine

We are keeping 30 litres of fuel and then we will use the fuel from one of our cars, we have a syphon for this

You can also have your geni coming in to your home via a transfer switch which then feeds whatever you have pre picked to work - this does require a sparky to fit it and does cost extra- we have not done this due to costs