What is a common issue when extending electrical circuits in older homes?

When extending electrical circuits in older homes, a common issue that arises is insufficient load capacity. Older homes were originally designed with wiring and electrical systems that support much lower power demands than what is typical today. As newer, more power-hungry appliances and devices are introduced into these homes, the existing circuits may not be able to handle the additional load. This can lead to circuit breakers tripping, fuses blowing, or even more hazardous situations such as overheating and potential electrical fires.

The original wiring may have a lower ampacity than is required for modern equipment, creating safety concerns and the necessity for careful consideration when making any extensions or alterations to the existing electrical system. Thus, ensuring that the load capacity is adequate becomes paramount when extending electrical circuits in these older structures.