1

I am installing a radiant heat system alongside a rocket mass heater. I want to compare the cost of operating each. For the radiant heat system, an on-demand electric hot water heater is being used. I want to meter power used by this device as a way to quantify the cost of operating it.

The heater will be hard-wired and operates on split-phase 240v at 19A. What's the best way to meter its actual power usage?

  • Google electric sub-metering – Tyson Nov 21 '16 at 0:16
  • There are many products available. I'm not confident in my ability to select the right one for my project. A little bit of hand-holding would be appreciated. :) – Jean-Paul Calderone Nov 21 '16 at 13:22
0

I went with a 120/240 Volt Pass-Through kWh Meter, 3-wire (2 hots, 1 neutral), 100A, 60Hz, EKM-25IDS.

The meter is hard-wired in front of the hot water heater and provides a digital kWh readout for the hot water heater's power usage.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.