Breaker And Wire Size For 4500 Watt Water Heater

This means that 10 copper wire will also be used.

Breaker and wire size for 4500 watt water heater.

Hj az since the breaker s function is to protect the wire and most water heaters are wired with 10 wire the 30 amp breaker is the standard in most cases. 4500 watt vs 5500 watt. A standard 3000 watt heater will use a two pole 20 amp breaker connected to. If it s 4500 then the 20 amp will work but it won t be code compliant.

4500 watt vs 5500 watt. In a us household the current draw for a 1500 watt water heater is 12 5 amps. The higher the wattage the larger the wire size. A water heater of this type is required to be considered a continuous load meaning that the branch circuit needs to be calculated at 125 of the heater s rated ampacity.

A 1500 watt heater on a 120 volt circuit thus needs a breaker of 15 6 amps. The wire size is dependent upon the wattage size of your water heater. 80 of breaker max single phase breaker size wire size based on copper thhn wire increase one size when using aluminum conductors at 115 volts at 230 volts 15 amp 14 1 380 2 760 20 amp 12 1 840 3 680. So a 4500 watt heater circuit must be sized up to either a 25 amp or 30 amp circuit.

Now lets consider this water heater circuit installation. 4500 240 18 75 amps will work on a 20 amp ocpd but. Multiply the current rating of the water heater with 125. Now in order to choose an electric breaker multiply the current draw of the water heater with 125 per cent in order to determine the size of the breaker you will need.

60 amp is correct for such use. Palm329 va ditto hj panel breakers are sized for the wire.