Power Delivery search for best practise and calculation issue

[fredw92]

Hi there!
Im using NetBox in the Community Edition v4.4.7.
Currently im working on the power inventory and struggle a lot.
What is the best practise for building the power delivery in netbox? As of many forums they use
Power Panel -> Power Feed -> PowerPorts|PDU|Outlet -> PowerPort|Devices

Ive built it like this and connected the cables, when looking at the PSU from my device i can click all the way to the power feed, thats nice and logical. What doesnt work is the calculation. When i add the parameters to the PSU (e.g. 700W Max / 500W Allocated) it doesnt automaticly show up in the rack energy tab, only when adding the parameters to the PDU, which would mean i have to manually add the watteges of my devices to the PDU, which i cant believe is the way to do it.

Could someone help me?

Other thing: Logicly my power devices are more like this:
Power Panel -> Power Feed -> Rittal PSM Power Rail (3 Phases, multiple module slots)-> Multiple different PDUs plugged into that -> Devices. Ive read that people dont add the PSMs into netbox. Is that true? Could there be a way to add them into for documentation?
They are part of the rack and are important for the power phases.

Thanks in advance!

[peterbaumert]

Sadly i think there is no "real" answer. The whole Power parts needs to be entirely reworked if you want to model power distribution properly.

We have e.g Central UPS -> many fuse and distri points -> room fuses/distri -> 3phase pdus -> devices

And k never could model it properly you always have to have some compromises :(

[CTV-2023]

I had this kind of issue when modeling our datacenters PDU. Make sure your PDU outlets are assigned to your PDU power port (I have one phase here, so quite easy, for 3 phase I don't know how this should be done)

[fredw92]

Thanks for reply! So thats what i have too. When i go to Power Outlets on the PDU, i see they are linked to the Power Port of the PDU and this Power Port is connected to the Power Feed of the Rack itself. It has a cable, correct endpoints and Enabled status.

[CTV-2023]

My power feed

Connected to a PDU power port. On this port, no allocation.

Allocation is done on the module (template)

And seed on the device once the module is installed

[fredw92]

Thanks in Advance, that helped me a bit. On the PDU i had a Maximum Draw set. Ive deleted that one and now all of a sudden i see the Power Allocation on the Power Feed of the Rack and i only seeded on the device itself. Perfect.

Now i still have the issue, that our rack has 1 power feed cable per side, which goes into a rittal psm which has 4 pdus inside. Ive learnt that adding a psm is nonesense and i should only go with the pdus. But now the issue is that my 1 power feed cable can only connect to 1 pdu. Any idea how i can solve this?