Issue:
Looking for the value of infrared emission of tin-plated copper bus for Type NF & NQ Panelboards.

Product Line:
NQ NF Panelboards

Environment:
Panelboards

Resolution:
Schneider Electric has not tested the emissivity of Square D NQ and NF Panelboard Bus Bars.  However, the emissivity of electroplated copper is known.

The emissivity coefficient - ε - indicates the radiation of heat from a 'grey body' according to the Stefan-Boltzmann Law, compared with the radiation of heat from an ideal 'black body' with the emissivity coefficient ε = 1.
The emissivity coefficient, - ε -, of electroplated copper is 0.03

Note that the emissivity coefficients for some products vary with the temperature. As a guideline, the emissivities below are based on temperature 300 K (80.33 F).

Released for: Schneider Electric United Arab Emirates