Find your enclosure s total surface area by entering its dimensions here.
Electrical enclosure heater calculator.
For heat transfer from the outside calculate the area exposed to the atmosphere except for the top of the control panel.
Approximations may be necessary.
For example if you know the power generated inside the unit assume 10 of the energy is dissipated as heat.
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You can use this calculator to find the wattage 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.
Once total heat is calculated the calculator can be used to determine expected temperature rise based on the control panel size and type of enclosure.
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This calculator has a maximum temperature rise of 140 f or 78 c step 1.
The graph can be read to determine expected temperature rise.
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Determine the heat generated inside the enclosure.
Rely on nvent hoffman s full portfolio of enclosure heater solutions to help maintain stable temperatures for your equipment.