What causes the power of the heat strip to be less when connected to a 115V circuit?

When a heat strip is connected to a 115V circuit, the power it generates is influenced primarily by the applied voltage in relation to its rated voltage. In this case, if the applied voltage is less than the equipment voltage rating, the power output of the heat strip will decrease accordingly.

The power generated by a resistive heating element, such as a heat strip, can be calculated using the formula P = V²/R, where P is power, V is voltage, and R is resistance. If the voltage (V) supplied to the heat strip is lower than what it is rated for, then the square of that voltage, which determines the power, will also be lower. This results in reduced power output, as the device is not being provided with sufficient voltage to operate at its full capability.

This principle highlights the importance of ensuring that electrical devices are connected to the correct voltage supply to function effectively. Devices designed to operate at a specific voltage may only provide optimal performance at that level, and any deviation can lead to reduced efficiency or power generation.