Questions tagged [power-backup]

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1answer
67 views

Electrical Back-up Solution

I have a 350 Watt appliance that I need to run pretty much continuously. An electrical outage of a few seconds isn't a problem but more than a minute or two becomes an issue. So I need a back-up ...
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2answers
203 views

How can I supply 240v power to my home with 120v generators?

I want to hook up two 3kw inverter generators together to power my house in case of power loss. They only have 120V not 240V. How can I make this work while supplying power to all circuits 120V & ...
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1answer
87 views

Standalone circuit for emergency power

I'm looking to setup an option for long-term power outages. Our house was built in the 70s and the circuit layout is nowhere near logical enough to be able to say "these 3 circuits need emergency ...
11
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1answer
812 views

Can a Backup Generator SubPanel Neutral be tied to the Main Panels Neutral bus, if both panels are energized at the same time from different sources?

Im new here, and Ive learned alot from many of these posts, although I have not found my exact issue yet, so I decided to upload this. I have a question regarding my installation, if its safe, and if ...
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3answers
61 views

Secondary Generator Wiring

I have a Generac Guardian 22kw hardwired in via an RTS switch. When the power goes out (and it does so fairly often) the generator kicks on automatically and there is barely a flicker in the lights. ...
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1answer
78 views

Feeding single circuit from two different subpanels (with interlock)

I have a main panel and a critical loads sub-panel fed by a PV inverter + battery backup. I need to avoid overloading the normal capacity in the critical loads panel (50A), and I'm already at a ...
2
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1answer
2k views

Battery backup system for tankless gas water heater (outdoor install)

I have a Takagi T-K3-SP tankless gas water heater, which is installed outdoors. It still needs electricity though, so when I lose power at home, there's no hot water. The manual states it uses 86W ...
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1answer
121 views

How to deal with a Diesel generator (PDU6500E)?

Shortly after hurricane Sandy I installed a generator (Powerland PDU6500E), which kept me and the rest of the county without a major power outage since. With winter approaching yet again, I went to ...
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2answers
88 views

Automatically turn off power to home appliances power supply switches to backup generator

Scenario at my home: In my home, refrigerator, washing machine etc and other heavy duty appliances(16A current) and lights and fans are connected to the same power line. It was a mistake done during ...
1
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1answer
926 views

feeding both sides of load center from 120vac backup source

In a situation of temporary backup power (short-term grid outages), is it ok to feed both "sides" of a standard split-phase main load center from a single 120vac backup source (e.g. an inverter driven ...
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2answers
563 views

How do I relocate a generator inlet box?

From the images above, I have a 30 amp generator inlet that connects to a transfer switch. I’d like to relocate that inlet box to the outside of the house so that I don’t have to run my L14-30 cable ...
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1answer
71 views

What do I need to switch power automatically from utility to solar offgrid inverter with no downtime at all during the transfer?

I want to switch power somewhere where power outage happens frequently from utility to inverter and back and forth kind of like a UPS without giving up on my inverter and what I already have.
17
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4answers
5k views

Getting UPS Power from One Room to Another

I’d like to run power from a Uninterruptible Power Supply (UPS) in ROOM A to where a work computer is used in ROOM B. I was thinking of installing an outlet box in ROOM A near where the UPS is plugged ...
2
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1answer
328 views

Should I Ground a Generator Powering an UPS?

My inverter generator's manual states that "If this generator will be used only with cord and plug-connected equipment, National Electric Code does not require that the unit be grounded." I am not ...
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1answer
73 views

How to use two UPS one online and the other as backup?

I have two UPS 10kva 220 volt used for controlling system. I need one ups online and the other one as backup. If the Grid supply out the main ups pick up the load and if the main ups fail to do that ...
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1answer
5k views

Turning off Power to Thermostat to Replace It

I'm replacing my old thermostat due to issues with it somehow not staying at my set temperature. It's a Simple Comfort 2001, and I'm replacing it with a newer model, a Simple Clean 2001L. Both of them ...
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3answers
242 views

20 kW generator overkill for a home?

I see 20kW backup generators advertised for homes, but this seems like total overkill, or maybe my math is wrong? According to my energy bill I use about 400 kW hours of electricity per month. So, ...
2
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2answers
652 views

"power buffer" in front of generator for peak power shaving?

I need to do some work off-grid, and I only have a 1000W generator to drive my power tools, which easily draws twice that (and probably more when starting up) when cutting steel. Instead of getting a ...
1
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2answers
444 views

Will a consumer UPS clean up power from a conventional genetator

I have a DeWalt DXGNR7000 generator with a bonded neutral. I’m okay with house wiring, the fine folks here on Stack helped me out with that. However, I know that these types of gensets create 60hz ...
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1answer
346 views

What is in the 4-pin DC cable?

I received a used DVR, which expects a power supply like this -- note the 4-pin connector. I want to feed the DVR and the cameras from a battery-backed system like this so that the whole setup ...
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3answers
2k views

What do i need to stop my computer from rebooting in electricity fluctuations [closed]

AC 240V location. My computer at home keeps restarting at the time of fluctuations and i loose all my work, this happens minimum once every day and some days more than 2 times. I have 1100va ...
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2answers
2k views

Can I use a heavy gauge extension cord from the wall to a UPS?

I have a 900VA/480Watt UPS/surge unit, and it doesn’t quite reach the wall where I need to plug it in. I'm using it to power an iMac. The unit has a 3x16 AWG cord. Is there any harm or difference, in ...
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5answers
1k views

Use small UPS to power steam boiler

I have a steam boiler (natural gas fired) and I'm wondering if I can safely use a small UPS to backfeed power to the boiler, in case of a power outage. I'm not sure how much total run time I'd get - ...
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1answer
39 views

Distribution of lengths of power outages

I am looking for a distribution graph of power outages. I am assuming the graph would show that the lengths are positively skewed. From this I would be able to determine how long to have my ...
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1answer
846 views

Can I connect the UPS neutral to my mains neutral permanently?

I am trying to wireup a UPS (old one bought for my PC once) to power one of my ceiling lamps so it works as an emergency light. (Stupid idea? Yeah? :P) But since the ceiling lamp wiring is already ...
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2answers
575 views

Open Compute Server needs 220v to run. Can I use voltage convertor to run it?

So I bought an open compute kind of server and it runs on 220 volts and 700 watts power supply. So I decided to purchase a voltage converter(Transformer) My question is is this stable and will I ...
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3answers
24k views

How to determine (not estimate) starting amperage of a motor?

I want to buy an inverter-generator to run my Trane heating system in case of a power outage. The Trane is on a 20 amp circuit. The sticker says it needs a minimum of a 15.2 amp circuit. My question ...
0
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1answer
1k views

Discharge back-up sump above ground?

With a TON of rain in my area recently (Northern Ohio), my basement flooded (around 2" of water). The sump pump came with the house, and I never gave it a second thought (I should have). Now that I'...
1
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1answer
216 views

How do I select the right generator?

I'm looking for advice on what kind of generator I should get for my mobile home. We have had 3 pretty bad storms (2 hurricanes, 1 blizzard) and am looking to give my home backup power. Now I have ...
4
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2answers
290 views

Could I use a UPS to power my humidifier on an underrated breaker with a little trickery

I recently bought a house with really nice hardwood floors, but the builder didn't put any thought into installing a humidifier system. I'm now looking into my options and steam humidifiers seem to ...
4
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2answers
289 views

What Good and Affordable Alternative Power Source Would You Recommend?

I am woking on a startup (read: using my computer always). 80% of the time, I generate my own electricity with a petrol/gas generator. On new years day, the Nigerian government increased the price of ...
2
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1answer
908 views

Solar powered charger for laptop

How do I build a solar powered charger for a laptop with dc rating 19v, 3.42A? I'd also prefer to use some other batteries to store the electricity? How can I accomplish this?
3
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2answers
178 views

Solar panel: Current-related question

I found a solar panel rated 9v, 70mA. I want to use it to create a power backup for a 9v, 1A router. Is this possible?