Emilie Meyer
Choosing the correct meter pan is important to ensure the safety of your property and to avoid the risk of fire. A meter pan, also known as an electric meter box, houses the electric meter socket where the electric meter is plugged in. When choosing a meter pan, it is important to consider the ampacity, or the ability of the meter pan to handle a certain number of amps. Different meter pans have different installation requirements, and it is important to follow local and national electrical codes when installing one. In addition, when selecting a meter pan, it is crucial to consider the specific requirements and goals, such as whether it is for tenant submetering, submetering a commercial building, or power monitoring for energy management. Other factors to consider include the number of loads to be measured, the type of service, and the working range. For water meters, it is important to consider the flow rate, installation requirements, location, and cost factors such as installation, maintenance, and longevity costs.
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What You'll Learn
Understand the specific requirements and goals of your meter pan
Understanding your specific requirements and goals is key to choosing the right meter pan. Firstly, it is important to know the metrological working range of the meter pan. This is defined by the ratio of working flow to minimum flow, which determines the meter's sensitivity to low flow rates. For example, a meter with a high "R" ratio will be more sensitive to low flow rates.
Secondly, meter pans have different installation requirements. The location of the meter pan will determine the technology used, and whether it is installed indoors or outdoors will also affect the type of enclosure required. For instance, a NEMA 1-rated electrical enclosure may be needed to protect the meter from harsh weather conditions. Additionally, the number of loads you need to measure will determine the number of current transformers (CTs) required.
Thirdly, consider the data capabilities and performance you expect from your meter pan. For example, you may require a meter pan with data logging capabilities, or one that can be pre-configured before installation.
Finally, it is important to ensure that your meter pan complies with local and national electrical codes and regulations. This may include specific guidelines, codes, and specifications that must be adhered to during installation.
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Consider the ampacity of the meter pan
When choosing a meter pan, it is important to consider the ampacity of the meter pan. Ampacity refers to the maximum amount of electric current a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
A typical form 2S meter is capable of metering at up to 200 amps but can fit into meter pans with lower ampacity. It is crucial to ensure that the lugs on the pan can handle the desired ampacity to prevent any fire hazards. For example, if you require a 200-amp service, you need to confirm that every component, including the meter pan, can handle that ampacity.
The ampacity of a meter can be determined by checking the tag. For instance, a meter with a tag of CL 20 can measure up to 20 amps, while a meter with a tag of CL 200 can measure up to 200 amps.
In some cases, the utility company may own the meter and have records of its specifications. However, if the customer owns the meter and related equipment, they may need to consult an electrician or refer to the meter's tag to determine its ampacity.
It is important to note that meter pans, also known as electric meter boxes, involve electrical work that requires training and experience. As such, some states mandate that only authorised electricians can install or modify meter pans.
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Check local guidelines, codes, and specifications for installation
When installing an electric meter box, also known as an electrical meter pan, it is important to check local guidelines, codes, and specifications. This is a task that requires electrical training and experience, and in some states, only an authorized electrician is permitted to perform the installation. Local governments will have specific guidelines that must be followed, and it is important to adhere to existing local and national electrical codes.
For example, PSEG Long Island has its own set of guidelines and specifications for electrical contractors working with its electric distribution system, outlined in its Red Book. Similarly, other utility companies will have their own standards and requirements for meter pan installation.
It is also important to be aware of the ampacity of the meter pan and whether the lugs can handle the required amount of amps. For instance, a typical form 2S meter can meter up to 200 amps but fits into meter pans with lower ampacities. Knowing the ampacity of the meter pan is crucial to ensuring safety and preventing fires.
Additionally, there may be specific requirements for the wiring and configuration of the meter pan. For instance, the wiring may need to be connected to specific terminal lugs in a particular order, and the cables may need to be cut and stripped to a certain length. It is important to consult local guidelines and seek professional advice to ensure that the installation is performed correctly and safely.
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Assess the installation requirements of the meter pan
To choose the correct meter pan, it is important to assess the installation requirements. This involves considering various factors such as the specific needs and goals of the project, the type of meter pan, and the expertise required for installation.
Firstly, understanding your specific requirements and goals is essential. For example, if you are installing a water meter, consider the flow rate you intend to measure, the accuracy and reliability you require, and the associated costs, including installation and maintenance. Different water meters have different installation requirements, so it is important to assess factors such as the location of the meter and the technology needed.
Secondly, the type of meter pan and its installation process should be evaluated. For instance, an electric meter box, also known as an electrical meter pan, requires mounting the box, wiring the cables, and adhering to local and national electrical codes. This task necessitates electrical expertise and experience, which is why certain jurisdictions mandate that only authorised electricians perform it.
Additionally, the ampacity of the meter pan is crucial, especially when considering a form 2S meter. The ampacity refers to the maximum amount of electric current a conductor can carry continuously without melting or deforming. Ensuring that the lugs on the pan can handle the required amperage is vital for safety reasons.
Moreover, when selecting a power meter, it is important to consider the number of loads you need to measure and the service type. This will determine the number of current transformers (CTs) required. Power meters also offer various features, such as data logging capabilities, advanced network communication protocols, and configurable pulse inputs and outputs.
In conclusion, assessing the installation requirements involves understanding your specific needs, choosing the appropriate meter pan type, considering the expertise needed for installation, and evaluating the technical specifications to ensure a safe and functional setup.
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Evaluate the cost of the meter pan, including installation and maintenance
The cost of a meter pan, including installation and maintenance, can vary depending on several factors. Firstly, the meter size, location, installation complexity, and code requirements play a role in determining the overall cost. For instance, the price of a new outside electrical meter box ranges from $50 to $750, depending on the amperage. If you intend to add a separate electricity meter, the cost can be between $1,400 and $4,700. This cost variation is influenced by the job's size, complexity, and whether the power company splits the existing supply line or needs to run a new line.
Installation costs can vary based on whether you hire an electrician or perform the task yourself. While some states require an authorized electrician to install a meter pan, others may allow homeowners to do it themselves. If you opt for a professional installation, the cost can range from $850 to $2,500. It is recommended to obtain at least three in-person estimates, check reviews, and hire a licensed, bonded, and insured company with a good track record.
Additionally, consider the cost of permits and inspections. Electrical permits can range from $50 to $350, depending on the location, and a full electrical inspection can cost between $100 and $200. These steps are crucial to ensuring compliance with local regulations and avoiding potential fines.
Maintenance and replacement costs should also be factored in. For example, replacing a meter box cover costs around $20 to $40 for the cover alone, while including labor can increase the cost to $120 to $370. Replacing a meter lug can range from $5 to $40 for the part alone, with installation costing around $100 to $240. In some cases, older meter boxes may require a complete replacement, which can be more expensive.
Finally, additional labor requests and system upgrades can impact the overall cost. Installing a subpanel typically ranges from $400 to $1,750, while a service entrance cable installation can cost around $1,000 to $15,000 for overhead lines and up to $5,000 or more for underground lines. If you're considering a major upgrade, such as switching from a fuse box to a breaker system, the cost can be between $1,500 and $4,500, with potential additional rewiring costs of $2,000 to $9,000.
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Frequently asked questions
An electric meter box is sometimes referred to as an electrical meter pan by electricians. The electric meter box houses the electric meter socket where the electric meter is plugged in.
The ampacity of the meter pan is important. You need to know whether the lugs on the pan can handle the required amps.
You should check with your local government regarding guidelines, codes, and specifications that must be followed when installing an electric meter box.
Water meters and power meters are also common. Water meters have a metrological working range defined by the ratio of working flow to minimum flow. Power meters have different enclosure types and current capacities.
