Multiple electricity meters installed in a household distribution box

Installing multiple electricity meters in a household is legal and feasible, provided you follow local regulations and obtain approval from your electricity provider.

Legality and Permissions

Having more than one electricity meter in a single household is generally allowed and can be beneficial for load distribution and billing purposes. Each meter can track electricity usage separately, which is useful in multi-tenant homes or for sub-metering different areas of a large property. However, the installation requires permission from your local electricity provider, and the rules may vary depending on your location and the type of property (residential, commercial, or multi-use) .

Technical Setup

Multiple meters are typically installed in the main distribution board or a dedicated meter panel. The setup can involve:

• Separate incoming circuits for each meter, often connected to different phases in a three-phase supply if available .
• Miniature Circuit Breakers (MCBs) or Residual Current Devices (RCDs) downstream of each meter to protect individual circuits .
• Sub-distribution boards may be used to distribute electricity from each meter to specific areas or appliances within the household . In some countries, the main supply may already support multiple meters, and additional meters can be connected to unused phases without major electrical modifications .

Advantages

• Load balancing: Electricity consumption is spread across multiple meters, which can reduce costs if slab-based tariffs are applied .
• Individual billing: Each tenant or household section can be billed separately.
• Safety and maintenance: Isolating circuits per meter allows easier maintenance and reduces the risk of overloading a single meter.

Installation Considerations

• Always use a qualified electrician to ensure compliance with wiring standards and safety regulations .
• Obtain a Meter Point Administration Number (MPAN) for each new meter, which uniquely identifies the supply point for billing and monitoring .
• Ensure that the incoming supply capacity is sufficient to handle the combined load of all meters without exceeding the main supply rating . In summary, multiple electricity meters in a household distribution box are both legal and practical, but proper planning, approval from the electricity provider, and professional installation are essential to ensure safety, compliance, and efficient load management.