I need to run 4 security cameras in a place that has no electricity. How long will a UPS last?

Query by yeahbaby: I want to run four security cameras in a place that has no electrical energy. How prolonged will a UPS previous?
I need to have to run 4 safety cameras in a place that has no electrical power. How extended will a UPS previous?
I want to run four Cameras into a DVR for a few of hrs.

The cameras are rated at 12v

Strength Usage: 500 mWatt
Current Consumption: 500 mA

The UPS I am searching at has the subsequent ratings for strength:

Energy Description
Load Ability:
350VA/180W
Input Voltage:
110V AC
Input Voltage Assortment:
120V AC Single-phase
Output Voltage:
120V AC Single-phase Nominal
Frequency:
60Hz
Current:
15A Line mode
Waveform Type:
Pulse-width Modulated Sine Wave
Surge Energy Rating:
380J
Filtering:
EMI/RFI


How extended could I run individuals four cameras for?


Very best remedy:

Remedy by billrussell42
Depends on how large a UPS you purchase.

You load calculations seem off, one/2 watt is very lower. Plus twelve volts x 500mA is six watts, not 1/two watt. And you forgot the VCR, individuals are fifty-one hundred watts.

The description on the UPS left off how prolonged the saved energy will run. It appears most UPS producers are leaving that spec out these days, but it really is the most important one particular.

I'd guess your load is about one hundred watts, so for two hrs that is 200 watt-hrs. Search for a UPS that is rated for that. If they really don't spec it at all, I'd attempt a different vendor. To get much more time, occasionally you have to get a much more powerful unit, this kind of as a 500 watt unit.


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