24v or 48v PoE for WAX615?

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aeaeae5 wrote:
Do I need 24v or 48v PoE for the WAX615? is 24watts enough for max power or do I need 30w?

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Afraid, looks like you are on the wrong boat, sorry saying.

Netgear does (mostly) use IEEE compliant 802.3af, 803.3at, and 802.2bt PoE, not the dirt cheap passive, non-IEEE compliant passive PoE. For the WAX615 you need to calculate at least 21.2 Watts, this translates to a switch (or for the sake a power injector) with complete 802.3at support - otherwise (in case of a 802.3af) the radios will operate on lower bandwidth like 1x1 mode only.

When you have an eye on the Netgear PoE AP Datasheets like WBE7xx, WAX6xx (for example the WAX615 Data Sheet), or WAC5xx, you wont find any voltage and amps data for this very same reason - only IEEE PoE versions, and PoE power consumption. 

A standards compliant Power Source Equipment (PSE) will not supply any power, except of the basic Ethernet links, to the Powered Device (PD). The difference between the maximum power at the PSE and the powered device is cause by the normal cable loss.

Of course, the voltage is standardized, look for example https://en.wikipedia.org/wiki/Power_over_Ethernet 

Said that: No IEEE compliant PD will do the handshake required to get power from a passive non-standard "PoE-like" switch or injector.

This is about what you have to know about the one-and-only real PoE,

Regards,

-Kurt.