What are the electrical requirements for an electric tankless water heater?
What are the electrical requirements for an electric tankless water heater?
One whole-house tankless water heater has four 7,000-watt elements, for a total electrical load of 28,000 watts. This load re- quires wire and a circuit breaker that will handle at least 120 amps, at a cost many times that of electrical service to a conventional tank water heater.
What kind of wire do I need for a tankless water heater?
You must utilize either a 120- or 240-volt circuit, wholly devoted to the heater. Both voltages require 8-gauge wire, and the section exposed to the area under the sink must be armored cable. If the manufacturer's instructions call for a larger cable, the National Electrical Code says you must comply.
Do tankless water heaters need dedicated circuit?
The electrical requirements for Takagi tankless water heaters are 120 V AC 60 Hz and draw less than 2 Amps. The outlet needs to be on a dedicated circuit and should not exceed 70% capacity in terms of power consumption or else the breaker will trip.Aug 4, 2021
Why do tankless water heaters need 3 breakers?
The reason being is that in most homes the existing electrical system will not support a tankless water heater that is the right size for the home. ... That type of heater up until now would require the addition of 3 circuit breakers to the interior panel and pulling three new circuits.Feb 14, 2020
What size circuit does a tankless water heater need?
Most tankless gas water heaters require a 15 ampere or 20-ampere 120-volt circuit to power the electric pilot light and the control board. The National Electrical Code requires instantaneous water heaters to have circuits not exceeding 120 amperes and protected at not more than 150 amperes.Aug 4, 2021
Does a tankless water heater require a GFCI outlet?
In a garage, every 120, 15 and 20 Amp receptacle outlet needs to be GFCI protected, so if you have a tankless water heater in the garage, it should be protected as well.
Does a tankless water heater need its own breaker?
A tankless water heater will require a dedicated circuit as specified by the installation manual of the unit that has been selected. 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.
Is a GFCI outlet required for tankless water heater?
In a garage, every 120, 15 and 20 Amp receptacle outlet needs to be GFCI protected, so if you have a tankless water heater in the garage, it should be protected as well.
What wire does an electric water heater require?
Electric hot water heaters typically require a dedicated 30-amp, 240-volt breaker. The wire supplying power from the breaker panel to your water heater will usually be a 10/2 Romex cable (Blk wire- hot, Marked White wire - hot, Bare copper wire - ground).