Electric Heater Wire Size

Baseboard heaters come in many sizes to match the heating needs of the room.

Electric heater wire size.

Wire is sized by the american wire gauge awg system. Dividing by 250 the normal wattage per linear foot equals 6 84 feet of baseboard heater required. These 3 heaters would require 12 2 wire and a 20 amp 2 pole breaker if they were to all be placed on the same circuit. Rounding up this means that 7 feet or 84 inches of heater is needed.

2 1000w 1 1500w 240v heaters 3500 watts total. When placing multiple heaters on a circuit do not exceed the wattage listed for the corresponding wire and circuit breaker size. Wire gauge refers the physical size of the wire rated with a numerical designation that runs opposite to the diameter of the conductors in other words the smaller the wire gauge number the larger the wire diameter. The rating or heating capacity of a baseboard heater is commonly measured in wattage which is governed by the length of the heater.

A common rule of thumb is to provide 10 watts of heat for every square foot of space in the room though this may vary somewhat depending on the configuration of. Choosing a heater size. How to choose the right wattage size for an electric baseboard heater. 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.

As a rule of thumb assume a room requires 10 watts of electric heating per square foot of room. Common sizes include 14 12 10 8 6 and 2 gauge wire. In other words a 10 x 10 room 100 square feet will require 1000 watts of electric baseboard heating.