Closing ThoughtsĬonsider a 10 AWG wire and 30 amp circuit breaker for your 5,000 watt heater installation. ft.Īctual performance depends on the heater design, installation, and insulation of the space. How Much Space a 5,000 Watt Heater heats?Ī 5,000 watt electric heater with its estimated heat output of 17,000 BTU/hr should be able to easily heat up an area of about 500 sq. That said, always refer to the heater’s wiring instructions or contact a licensed electrician. Use a 30 amp circuit breaker to protect this wiring. What Wire Size for a 5,000 watt Garage heater?Ī 5,000 watt garage heater using two live wire connections (no neutral) will likely use 10/2 AWG wire to supply electricity safely to it when connected to a 208-240V AC supply. In comparative terms, the costs of running this heater alone at full power amount to four times (400%) the monthly electric utility bill of an average home in the US according to the 2021 EIA data. According to the Energy Information Administration (EIA), the average American household consumes about 886 kWh over 30 days. It is expensive when compared to the utility bill of an average American household. The estimated associated energy bill assumes a tariff of USD 0.12 = 3,600 x 0.12 = USD 432. The monthly electricity consumption of the heater (assuming working continuously at full power) is 3,600 kWh. How Much it Costs to Run for a Month (30 days)? This assumes an electricity tariff of 0.12 USD per kWh.ĭaily electricity consumption of 120 kWh x electricity tariff of USD 0.12 = USD 14.4. Over a 24 hours period, the 5,000 watt heater costs about USD 14 to run. In practice, it may cycle on or off and the actual electricity consumption may be lower. This assumes that the heater is working continuously at maximum heat output. Related Questions How Much Electricity (kWh) the Heater Uses?Ī 5,000 watt heater uses an estimated 120 units of electricity (120 kWh) a day from 5,000 watts x 24 hours. Use a circuit breaker of at least 30 amps to protect the electric circuit wiring for a 5,000 watt heater connected to single phase a 208 – 240V AC supply. What Circuit Breaker Size (amps) for a 5,000 watt Heater? Make sure that the heater is connected to a dedicated electric circuit with a special purpose-built plug to handle the large current draw. In case it requires 2 hot/live wire connections at 110V then a 10/2 NM wire can work.Īlways consult your electric heater’s owner manual. Use a wire size of at least 10 AWG or larger diameter to safely handle the estimated current draw of about 22 amps by the 5000 watt heater at 208-240V.Īlso, check if your heater requires a neutral wire. Make sure to refer to the electric heater owner manual for wiring instructions. ![]() Note: Always consult a licensed electrician. ![]() This post offers suggestions on what wire gauge and breaker size (amps) to use for a 5,000 watt heater. You’ll need to decide on the right size of wire gauge and circuit breaker to use the heater safely and reliably. Well, getting the heater is only the first step. Are you planning to install a 5,000 watt heater in your garage or workshop for warmth during the cold winter months?
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