Breaker wire size chart12/1/2023 ![]() More on that shortly.Ī water heater with a 4500-watt heating element requires a 10-gauge wire size with a 30 amp (240-volt) circuit breaker. ![]() The size of the breaker is determined by the heating elements’ wattage rating, not the size of the tank. While this is technically correctly sized, it leaves little room for overcurrent and does not meet the NEC 125% load guideline. Occasionally, I’ll see a 20-amp circuit breaker on a 4500-watt water heater. Different water heaters require different wire and breaker sizes. According to the NEC Code, you should always size your dedicated circuit breaker at 125% of the load. The National Electrical Code outlines guidelines that govern the sizing of circuit breakers and wiring for electrical safety. Electric Water Heater Breaker Size Chart Electric Tank Water Heater Size Breaker Size 10 Gallon Water Heater 20 Amp or 30 Amp 20 Gallon Water Heater 20 Amp or 30 Amp 30 Gallon Water Heater 30 Amp Breaker 40 Gallon Water Heater 30 Amp Breaker 50 Gallon Water Heater 30 Amp Breaker 60 Gallon Water Heater 30 Amp Breaker 70 Gallon Water Heater 30 Amp Breaker 80 Gallon Water Heater 30 Amp Breaker 90 Gallon Water Heater 30 Amp or 40 Amp Breaker 100 Gallon Water Heater 30 Amp or 40 Amp Breaker A 30-amp circuit breaker can power all 4500-watt water heaters regardless of gallon size. The 30 amp breaker only powers the water heater and no other appliances. ![]() Residential water heaters require a 240-volt dedicated 30-amp circuit and a 10 AWG wire size. It also helps prevent excess strain on the electrical circuit, which can cause fires or damage your home. Proper wire and circuit breaker size ensure that your new water heater will run safely and efficiently. The water heater breaker size is an important factor to consider when installing a new water heater. ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |