Determining Wire Size for 200 Amp Breaker: A Comprehensive Guide

When it comes to determining the wire size for a 200 amp breaker, there are several factors to consider. The depth of burial, local electrical codes, distance, and type of application all play a crucial role in selecting the appropriate wire size.

According to general recommendations, it's best to bury the cable at least 24 inches deep in conduit. However, this can vary depending on local electrical codes, which should be consulted for specific requirements.

For a 200 amp service to a 100 amp subpanel, a wire size like 2/0 AWG or 3/0 AWG may be necessary. This determination is based on the distance and local codes. For example, if the distance between the two panels is relatively short, a smaller wire size may suffice.

A 3-core cable typically refers to a cable with three conductors, which can be used for single-phase or 3-phase systems depending on the application. However, some systems might not require a neutral wire if the load is balanced.

A 480V 3-phase system typically consists of three live (phase) wires and a neutral wire. The size of the cable required for such a system depends on factors like distance and local regulations. For example, a 22kW 3-phase charger may need cables like 6 AWG or 8 AWG.

When it comes to calculating the full load amps for a 3-phase system, the formula is as follows: Full Load Amps = (Power × 1000) / (1.732 × Voltage × Power Factor). It's recommended to consult local codes and an electrician for precise sizing.

In conclusion, selecting the appropriate wire size for a 200 amp breaker requires careful consideration of several factors. By consulting local electrical codes, determining the distance between panels, and considering the type of application, you can ensure that your wiring meets all necessary safety standards.

200 amp breaker wire size