If you need additional space in the panel for the circuit breaker then a quad circuit breaker may be allowed as specified by the make and model of the panel.
Tankless water heater wires installation.
This will also make it easy to apply pipe insulation.
Clean the pipes and connectors before soldering to remove.
I bought an ecosmart 18 tankless water heater.
Community answer you will probably need 220 volt service as with an electric dryer with at least 60 amps.
This electrical wiring project is about how to connect the wires from the circuit breakers to a ecosmart 18 tankless water heater.
Wires to the tankless water heater reviewing the electrical question.
Subscribe to this old house.
What size wiring is recommended when installing a tankless hot water heater.
Use bell hangers to hold pipe securely in place against the wall.
Wire connections for a ecosmart 18 tankless water heater.
This video is an instructional video that gives you insight how to install tankless.