Tankless Water Heater Amperage Draw

A point of service unit can be simply plugged in to an outlet but one providing all hot water to the house could require three 40amp double breakers 240v and three lines of heavy gauge cable from box to heater e g ecosmart 27.

Tankless water heater amperage draw.

A standard electric tankless water heater needs at least 120amps to run and the total capacity for an average home is 200amps. Its on a 30amp breaker 06 01 2011 07 17 pm 2. 1 x 60 amps dp. Unfortunately the average electric tankless water heater needs at least 120 amps to operate and the average household s total capacity is 200 amps.

2 electric tankless water heater that useally a automatic 400 amp service but we do have class 320 service basically it is a resdetnail 400 amp service but check with your poco about 400 amp service and i know in my poco in wisconsin anything over 400 amp service will go with three phase supply otherwise approved by engineer to allow larger single phase service. Plus you never have to worry about running out of hot water with a rinnai tankless water heater because it keeps heating as long as it is needed. Multiply the current rating of the water heater with 125. 4 x 40 amps dp.

I think scott commenter above is confused or uninformed about the electrical requirements of whole house electric tankless water heaters. The eco 18 model required two 40 amp breakers for installation and it had a 75 amp draw. According to the electrician we consulted the house in question was already approaching maximum 200 amp electrical capacity before adding the new tankless unit. With tankless water heaters only using fuel when you re tapping the hot water it makes sense that you will consume less fuel and energy.

This means you will have to upgrade your electrical system to accommodate for the larger load demand which could cost you up to 1 500. In a us household the current draw for a 1500 watt water heater is 12 5 amps. Maximum amperage 240v recommended household electric service recommended minimum wire gauge. The 199 900 btu natural gas tankless water heater is designed to supply continuous hot water for up to 3 bathrooms at the same time.

Rinnai tankless water heaters last up to twice as long have twice the warranty and save energy as they only heat water when it is needed. View profile view forum posts visit homepage view forum threads professional member join date nov 2004 location nj posts 1 318 post likes. 2 x 40 amps dp. 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.

How many amps does a water heater draw i have a 220 volt water heater with i believe a 1500 watt elements how many amps does it draw. 1 x 40 amps dp.