Poe power utilization arrangement and method

A power over Ethernet power utilization arrangement comprising:

• a current path arranged to carry a current;
• a return path of the carried current;
• a voltage detector arranged to detect a first function of a voltage between said current path and said return path during a first time period and during a second time period, said second time period different than said first time period;
• a current sensor arranged to sense a second function of a magnitude of the carried current during said second time period;
• and
• a control circuitry,
• wherein said control circuitry is arranged to:
• receive from said voltage detector an indication of said detected first time period voltage function;
• receive from said voltage detector an indication of said detected second time period voltage function;
• receive from said current sensor an indication of said detected second time period current magnitude function;
• responsive to said received first time period voltage function, second time period voltage function and second time period current magnitude function, determine a third function of a resistance seen by said current path;
• and
• output an indication of said determined resistance function.