Tankless Hot Water Heater Wire Size

April 28 2019 at 9 49 pm.

Tankless hot water heater wire size.

The first factor in choosing a tankless water heater is calculating the size of your hot water heater. Just follow the three simple steps below to choose the right model and size you need. The right size is a tankless water heater that can heat enough gallons of water to a specific temperature per minute to keep up with the demand. How to size a tankless water heater.

Choose the right tankless electric water heater for you. It is hard to say which i prefer without more information. 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. What size tankless hot water heater do i need.

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. In fact it is the most important part of choosing a new unit for your home. Some large heaters draw up to 50 amps requiring 6 gauge wire. In the above example we would require a 15 6 amp circuit breaker for our us readers.

The small single faucet units that are used in restaurant rest rooms are that size and they have to have the flow restricted even then to output hot water to the faucet. Size matters when it comes to your tankless water heater. Do you have a preference. Wire a hot water heater with wire that s sized to accommodate the heater s current requirement.

For example an electric tankless heater that is rated at raising the water temperature 55 degrees at 1 5 gpm will supply you with a 120 degree temperature if the incoming water is 65 f or higher. An acquaintance has an older mobile galvanized branch water lines and his water heater. For example you might not be able to run more than one shower at a time without someone getting an arctic blast of cold water. With 7 people in a house though i am sure you need something robust.

If you want to upgrade your water heater size from 40 or 50 gallons storage water heater or replace it you won t necessarily need a big tankless water heater. Having a water heater that is too small will result in it not being able to produce enough hot water for your household demand. Hi darrell sorry for the late reply. While traditional tank water heaters are calculated by your family size a tankless water heater is calculated by the quantity and types of fixtures or appliances it will serve.