Electric Heater Wire Size

Some large heaters draw up to 50 amps requiring 6 gauge wire.

Electric heater wire size.

Standard heaters are not available in this length so in this case a single 8 foot or two 4 foot heaters would be the likely choice. 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. Rounding up this means that 7 feet or 84 inches of heater is needed. When placing multiple heaters on a circuit do not exceed the wattage listed for the corresponding wire and circuit breaker size.

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. Wire is sized by the american wire gauge awg system. Common sizes include 14 12 10 8 6 and 2 gauge wire. The rating or heating capacity of a baseboard heater is commonly measured in wattage which is governed by the length of the heater.

2 1000w 1 1500w 240v heaters 3500 watts total. Dividing by 250 the normal wattage per linear foot equals 6 84 feet of baseboard heater required. Baseboard heaters come in many sizes to match the heating needs of the room. In other words a 10 x 10 room 100 square feet will require 1000 watts of electric baseboard heating.

Wire a hot water heater with wire that s sized to accommodate the heater s current requirement. 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. Choosing a heater size.