Advantages

• Can be designed for a wide range of voltage and current.
• High ampere year output available from a single ground bed.
• Large areas can be protected by a single installation.
• Variable voltage and current output
• Applicable in High-Resistivity Environments.
• Effective in protecting uncoated and poorly coated structures.

Disadvantage

• Can cause Cathodic interference Problems.
• Subject to power failure
• Require periodic inspection and maintenance.
• Requires External power.
• Monthly power costs.
• Overprotection can cause coating damage.