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Control Panel Heat Loss Calculator

Six heat sources, natural dissipation from enclosure area, cooling need and fan/air-con decision. 8 inputs, 5 outputs with grouped results.

Inputs

Heat sources (W)

From the efficiency tool.

At operating load.

Controls dissipation.

Energized coils.

Lighting, heaters off-state, misc.

Enclosure

Free-standing exposed area.

Inside minus ambient.

Mounting

Wall mounting sheds less heat.

Result

Active cooling need
Waiting for calculation.
Natural dissipation
Waiting for calculation.
Total heat load
Waiting for calculation.
Ventilation hint (CFM)
Waiting for calculation.
Needs fan/AC (1=yes)
Waiting for calculation.
Screening calculation only. Verify against NEC articles cited on the page and the equipment nameplate; the authority having jurisdiction governs.

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Resistor Power Dissipation

Dissipation from any two of V/I/R, 2x rating guide, temperature rise estimate and annual waste. 6 inputs, 5 outputs with grouped results.

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Workspace

Keep the assumptions with the result.

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