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  • How much Power would a 18V "Power Over Ethernet Injector" consume per day in Electrical Units (i.e.

    Jignesh Desai

    Jignesh Desai

    @jignesh-desai-b4BPei
    Updated: Jul 26, 2017
    Views: 1.2K
    How much Power would a 18V "Power Over Ethernet Injector" consume per day in Electrical Units (i.e. kW-h) , if left on for 24 hours ?

    The product's .pdf file for the above product shows the following electrical specifications :

    Ethernet Connectors :- RJ45 Jacks (2)
    Ethernet Data Rate :- 10/100 Mbps Ethernet
    No. of Ethernet Devices that can be powered :- Single
    Data Lines :- Pair 1 : Pins 1/2
    Pair 2 : Pins 3/6
    Cat-5 Power (Poe) Pin Out (Spare Pair) :- +VDC: Pins 4/5
    - VDC: Pins 7/8
    Operating Temperature :- 0 C to 50 C
    Max Ouput Power :- 30W
    Nominal Output Voltage :- 18V (Typical)
    Input - 205-255 VAC 50 Hz
    IEEE 802.3 af Compiant :- Not applicable


    The Adaptor that I am using along with this Injector has the following Details printed on it :

    AC/DC Adaptor
    Input - 100-240V AC 50/60 Hz
    Output 12 Volt = DC 1 Amp


    The Cable that has been provided by the ISP , has the following written on it :- "Duraconnect CAT -5e 4 Pair UTP 25 AWG UV Resistant PVC as per TIA/EIA 568 C.2 And IEC/ISO 11801" .

    This Cable connects the ISP's connection to the "Power Over Ethernet Injector" & from the LAN socket of this injector , another cable (with same thing written) runs to my P.C. & gets connected to it .

    I have attached the .pdf file regarding this Power Over Ethernet Injector that I was able to download from Telenet's website .

    In case I am wrong in assessing which Injector I am using & in case , I am actually using Telenet's 12V Injector , in that case , what would be the Power consumption per day (if left on for 24 hours) ? The specifications of this product are as follows :

    Maximum Output Power - 12W
    Nominal Output Voltage - 12V (Typical)
    Input - 205-255 VAC 50 Hz
    IEEE 802.3af Compliant - Not Applicable



    I am attaching the .pdf file for this product also, along with this email .

    Please , kindly can you show the working ?
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