Which type of transformer is most commonly used in underground residential distribution installations?

The type of transformer most commonly used in underground residential distribution installations is the pad mounted transformer. These transformers are designed for outdoor use and are typically placed on concrete pads above ground, allowing for easy access for maintenance and servicing. Pad mounted transformers are ideal for residential areas because they can handle the electrical load required for underground distribution systems, and they offer a safe and efficient way to step down voltage for local use.

Their robust construction makes them suitable for various weather conditions, which is essential for installations in residential areas. Furthermore, pad mounted transformers are secured and protected from tampering or damage, making them a practical choice for neighborhoods where safety and reliability are critical factors in power distribution.

In contrast, other types of transformers such as wall mounted, submersible, or portable transformers may not offer the same level of efficiency, safety, or ease of maintenance for underground residential distribution systems, making them less suitable options for this specific application.