Electrical Enclosure Heater Sizing

Enclosures less than 100 ft2 surface area conservative values for heat loss are as shown in the table below.

Electrical enclosure heater sizing.

Once you make your calculations you can decide on the best choice for a type of heater and how many btus british thermal unit the standard heat measurement you need. Larger enclosures often require fan heaters to distribute the heat throughout the enclosure. This calculator has a maximum temperature rise of 140 f or 78 c step 1. For localized heat in a large enclosure place them near batteries and other parts that don t work well in the cold.

Rely on nvent hoffman s full portfolio of enclosure heater solutions to help maintain stable temperatures for your equipment. Under 2 long these tiny heaters fit in tight spaces such as security camera enclosures. You can use this calculator to find the wattage you need. An enclosure heater from grainger helps to protect mechanical electrical and electronic equipment from freezing condensation and corrosion.

Start with the surface area measure the height width and depth of your enclosure. Find your enclosure s total surface area by entering its dimensions here. Tubular low profile finned strip silicone rubber panel radiant and fan driven enclosure heaters feature thermostatic controls designed to maintain stable enclosure temperatures. 9 42 data subject to change without notice 763 4222211 fax 763 422 2600 2003 hoffman enclosures inc.

Choose from a wide range of capacities power inputs mounting options sizes and type ratings. Five steps to determine heating requirements calculations to determine the required heater size include the following five steps. Exterior dimensions of enclosure insulation thickness and type required temperature minimum ambient temperature internal heat source i e. How to calculate heater size.

Cabinet enclosure heater sizing. To heat an area like an outbuilding or new building you must calculate what size heater you need. The wattage of the heater you need is determined by the total surface area of your enclosure and the temperature rise you need to produce. Electrical current draw of panel components heat loss voltage.

Generally heaters over 150 watts will include an axial fan to move the heat throughout the enclosure. Saginaw control and engineering. An improperly sized cabinet enclosure heater can damage your electrical components and cost you in repairs.