Safety, Installation, and Operations Manual
©2021 TSC PowerHome All rights reserved. Contents subject to change without notice. TSC-MAN-0002 Rev 01, 04-2021
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High Performance Solar
6.0 Electrical Installation
6.1 Electrical Property
Rated electrical characteristics such as Pmax is /- 3% and Voc /-2% and Isc /- 4% of
tolerance values at Standard Test Conditions. Standard Test Conditions: 1000W/m² Irradiance, 25°C Cell
Temperature and 1.5 Air Mass.
Under normal conditions, the photovoltaic Modules may experience conditions that produce more current and/or
voltage than reported at Standard Test Conditions. Accordingly, the values of short circuit current, Isc, and open
circuit voltage, Voc, marked on Modules should be multiplied by a factor of 1.25 when determining component
voltage ratings, conductor capacities, fusing sizes, and size of controls connected to the Module output.
Voltages are additive when Modules are connected directly in series, and Modules currents are additive when
Modules are connected directly in parallel, as illustrated in Figure 6.
Modules with different electrical characteristics must not be connected directly in series.
The maximum number of Modules that can be connected in a series string must be calculated in accordance with
applicable regulations in such a way that the specified maximum system voltage (The maximum system voltage
of TSC Solar Modules is DC 1000V according to the safety appraisal of the IEC61730) of the Modules and all other
electrical DC components will not be exceeded in open-circuit operation at the lowest temperature expected at the
PV system location.
Figure 6 Electrical diagrams of series and parallel wiring
