To power devices using UPS

[HowTo]

Morning to you all

I have a question, when buying a UPS.
Do you take the primary wattage or secondary wattage to work out wattage required for a UPS.

I need to keep power during a power outage.
Wi-Fi camera. Input 100-240V 0.7 Watt Secondary 18Watt 12VDC 1.5A
Router. In 100-240V 0.15A
Power over Ethernet 100-240V 0,06A

The last two no secondary ratings.

Based on this what UPS to buy. I want 6 HRS backup time.

 

[Speedster]

Morning to you all

I have a question, when buying a UPS.
Do you take the primary wattage or secondary wattage to work out wattage required for a UPS.

I need to keep power during a power outage.
Wi-Fi camera. Input 100-240V 0.7 Watt Secondary 18Watt 12VDC 1.5A
Router. In 100-240V 0.15A
Power over Ethernet 100-240V 0,06A

The last two no secondary ratings.

Based on this what UPS to buy. I want 6 HRS backup time.

I'd look at one of the DC ups for your use case, one with PoE. A quick guestimate puts your usage at about 30W, so for 8 hours you'd need 240Wh. At 3.6V (most DC ups) that is 66Ah. The top end Ratel or UltraLAN should suffice.

 

[B-1]

Morning to you all

I have a question, when buying a UPS.
Do you take the primary wattage or secondary wattage to work out wattage required for a UPS.

I need to keep power during a power outage.
Wi-Fi camera. Input 100-240V 0.7 Watt Secondary 18Watt 12VDC 1.5A
Router. In 100-240V 0.15A
Power over Ethernet 100-240V 0,06A

The last two no secondary ratings.

Based on this what UPS to buy. I want 6 HRS backup time.

You take the input voltage so the 100-240v one unless you drop the power supply and feed it at the device dc rating.

But you are mixing units there. Watt is a function of amps multiplied by volts.

 

[HowTo]

I'd look at one of the DC ups for your use case, one with PoE. A quick guestimate puts your usage at about 30W, so for 8 hours you'd need 240Wh. At 3.6V (most DC ups) that is 66Ah. The top end Ratel or UltraLAN should suffice.

Dont need PoE

 

[HowTo]

You take the input voltage so the 100-240v one unless you drop the power supply and feed it at the device dc rating.

But you are mixing units there. Watt is a function of amps multiplied by volts.

Don't forget 0.8 cos