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    Low VoltageIntermediate

    How to Run and Power a PoE Camera

    Time
    60–120 min
    Steps
    6
    Pre-check
    4 items
    Skill
    Intermediate

    Scope

    Plan and pull a single Ethernet drop to an IP camera, terminate both ends, budget the PoE class against your switch or injector, and bring the camera online — staying within the 100-meter channel limit.

    Safety

    Read before starting

    PoE delivers up to ~57 V DC; it will not shock you through intact insulation but can arc and pit contacts if you hot-plug a damaged cable. Always terminate and wire-test a drop BEFORE patching it into a PoE port. Use a ladder safely for ceiling/eave camera mounts and locate wiring away from line-voltage runs.

    Pre-Check

    4 items · complete before you start
    0 / 25 complete

    Steps

    01

    Plan the Drop and PoE Budget

    • Map the route from the switch/injector to the camera location and measure the length
    • Sum the PoE draw of all cameras against the switch’s total PoE budget, not just its per-port rating
    • A switch may rate each port at 30 W yet have a total budget that can’t power every port at once — check the aggregate watts
    • Leave headroom: budget ~10–15% over the camera’s rated draw for cable loss over distance
    PoE Power Budget· Low Voltage
    Tips
    • PoE delivers power at the PSE; voltage drop over a long run means the camera receives less than the source watts. Long runs to high-draw cameras are where budgets get tight.
    02

    Pull the Cable

    • Run the cable along the planned path, keeping bends gentle (no kinks; respect the cable’s minimum bend radius)
    • Maintain separation from parallel line-voltage runs to limit interference
    • Leave a service loop of slack at both the camera and the switch end
    • Do not exceed the rated pulling tension — yanking a cable around a bind stretches and untwists the pairs
    ⚠ Warnings
    • Penetrations through fire-rated walls or plenum ceilings require the correct cable rating and firestopping — confirm local code before drilling.
    03

    Terminate Both Ends

    • Terminate the camera end to a keystone jack or field-terminated plug, and the head end to a patch panel or jack
    • Use the same standard (T568A or B) on both ends
    • Keep untwist under 0.5 inch to preserve performance for the data pairs that also carry PoE
    Tips
    • See the Terminate a Cat 6 Keystone Jack guide for punch-down detail.
    ✅Continue Gate:Are both ends terminated to the same standard with minimal untwist?
    04

    Wire-Test Before Applying Power

    • Run a wire-map test end to end to confirm all four pairs are intact with no opens, shorts, or split pairs
    • PoE (especially 4-pair 802.3bt) uses all four pairs — an open on a “spare” pair can break power delivery
    • Only after a clean wire map, patch the drop into the PoE port or injector
    ✅Continue Gate:Did the wire map pass on all four pairs before you applied PoE?
    05

    Mount the Camera and Connect

    • Mount the camera bracket securely to the surface; route the cable through the gasketed entry on outdoor housings
    • Connect the camera’s RJ45; on outdoor installs use a weatherproof boot/gland on the connector
    • Dress the service loop so no tension pulls on the connector
    06

    Power Up and Verify

    • Patch the drop into the PoE port/injector — the camera’s LED should indicate power within seconds
    • Confirm the switch reports the negotiated PoE class and draw on that port
    • Bring the camera online (NVR discovery or the manufacturer’s tool) and confirm a live video stream
    • For PTZ/heated cameras, exercise pan/tilt or heater and watch that the port wattage stays within budget
    ✅Continue Gate:Is the camera powered, discovered, and streaming, with port draw inside the PoE budget?

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