Tankless Water Heater Wire Gauge

For example a 20 amp hot water heater needs 12 gauge wire a 25 amp hot water heater requires 10 gauge wire and a 30 to 40 amp hot water heater requires 8 gauge wire.

Tankless water heater wire gauge.

Wire a hot water heater with wire that s sized to accommodate the heater s current requirement. 3 x 40 amps dp. Some large heaters draw up to 50 amps requiring 6 gauge wire. More about electrical wiring for a water heater.

Electrical wire for electrical repairs and home remodel projects. I bought an ecosmart 18 tankless water heater. There should be terminals on the bottom of the unit which would accept a minimum of 6 gauge wire 240 volt coming from a 60 amp double pole breaker. Details the electrical requirements for the stiebel eltron tankless water heaters including amperage electrical service required wire gauge and breaker sizes that are recommended by the manufacturer etc.

Wires to the tankless water heater reviewing the electrical question. 1 x 40 amps dp. Here is the spec sheet and your unit is a 13kw. This electrical wiring project is about how to connect the wires from the circuit breakers to a ecosmart 18 tankless water heater.

Recommended minimum wire gauge. This way you are sure to protect the wire gauge of the circuit. If the existing cable is 12 2 type tn copper with tw or thw insulation then a 2pole 25amp breaker would be correct. 1 x 30 amps.

2 x 40 amps dp. 1 x 60 amps dp. 4 x 40 amps dp.