@KeithWilliamson
Very sensible testing at night time; that removes a whole lot of uncertainty. I could not correctly read that image which you sent; possibly a dot too small to photograph ? No wonder you need to ask around. Someone who knows that meter type should be able to answer any queries, and that isn't me. Your test loads listed all sound to me like as you say, unity power factor; good choice. Something which could go wrong is that in the warm weather we are having, your room might get too warm and some fan heaters have an officious thermostat. One way around that is to run your fan heater through a plug-in-energy-monitor for single three-pin socket, which ought to show about the same kWh use as does the pictured kWh meter. Plug in energy monitors are easier to use too; one button 'function' cycles through
elapsed kWh, rms Volts, rms Amps, min Watts, max Watts, present Watts.
Very sensible testing at night time; that removes a whole lot of uncertainty. I could not correctly read that image which you sent; possibly a dot too small to photograph ? No wonder you need to ask around. Someone who knows that meter type should be able to answer any queries, and that isn't me. Your test loads listed all sound to me like as you say, unity power factor; good choice. Something which could go wrong is that in the warm weather we are having, your room might get too warm and some fan heaters have an officious thermostat. One way around that is to run your fan heater through a plug-in-energy-monitor for single three-pin socket, which ought to show about the same kWh use as does the pictured kWh meter. Plug in energy monitors are easier to use too; one button 'function' cycles through
elapsed kWh, rms Volts, rms Amps, min Watts, max Watts, present Watts.
