Final answer:
The symbols C350 and B500 seem to refer to current ratings for circuit breakers, but without further context about these specific codes, accurate calculations for short circuit and overload protection cannot be provided. Safety limits suggest using 80% of a circuit breaker's rated capacity for continuous use. For these specific devices, consult manufacturer specifications or a professional electrician.
Step-by-step explanation:
The symbols C350 and B500 refer to current ratings for circuit breakers. However, the specific problem does not appear to correspond to a standard formula for calculating short circuit protection current and overload protection current, as additional contextual information about the circuit breaker codes is needed, which isn't provided in standard references or common electrical guidelines.
The provided reference information suggests that safety regulations limit continuous use to 80% of the breaker current capacity, which would be relevant for calculating the overload protection current for an appropriately referenced circuit breaker. For example, if you had a 15-amp rated circuit breaker, considering the 80% safety regulation, the continuous use should not exceed 12 amps. Similarly, a 20-amp rated circuit breaker should not have a continuous current exceeding 16 amps.
However, since the current ratings mentioned (C350, B500) are not typical for residential or general circuit breaker use cases and are not defined in the provided reference material, a precise calculation for these specific devices without further information is not feasible. For accurate short circuit and overload protection calculations, one would need to refer to manufacturer specifications or a detailed standard that explains the coding used for these particular devices.
Please consult the manufacturer's specifications or reach out to a licensed electrician for further details on circuit breaker codes like C350 and B500. Without this additional information, we cannot provide a precise calculation for the short circuit protection current and overload protection current for each device.