According to 802.3-2012, Clause 33, what is the maximum power that can be provided through an Ethernet cable?

In the context of Ethernet standards, particularly according to the IEEE 802.3-2012 specification, Power over Ethernet (PoE) technology allows for electrical power transmission along with data over standardized cabling, typically category 5e or 6 cables. The maximum power that can be delivered through an Ethernet cable as specified in Clause 33 of the 802.3-2012 standard is indeed 30 watts.

This standard, specifically designed for PoE, outlines that devices complying with this standard can deliver a maximum of 30 watts of power to connected devices, which allows for efficient setup and operation of devices such as IP cameras, wireless access points, and VoIP phones without the need for separate power supplies. This power level is sufficient for many low to moderate power devices, which is why it is the commonly implemented standard in most installations.

Overall, 30 watts represents a significant advancement in providing sufficient power over Ethernet cables while ensuring compatibility and support for a wide range of devices, making it the correct choice in this context.