Service Upgrades
Electrical Capacity Built for Modern Demand
Service Upgrades in Marlborough for properties running out of electrical capacity or adding high-demand equipment
Metro West Mini Splits handles service upgrades for residential and commercial properties in Marlborough and Southborough when existing electrical systems no longer support current demands. You need this work when circuits trip frequently under normal loads, when adding central air conditioning or EV chargers, or when inspection reveals undersized service equipment. Properties built before 1990 often operate on 100-amp service, which struggles with the combined load of modern HVAC systems, kitchen appliances, and electric vehicle charging.
A service upgrade increases the amperage capacity feeding your property by replacing the service entrance conductors, main disconnect, and metering equipment. This work involves coordination with the utility company to disconnect and reconnect power, replacement of the weatherhead and service mast if needed, and installation of a new main panel rated for higher capacity. The upgrade addresses the gap between what your current service delivers and what your actual electrical consumption requires.
Schedule a load calculation assessment to determine the service size your property requires based on existing and planned electrical demands.
What Proper Service Upgrades Require
The process begins with calculating your total electrical load, including all existing circuits and any equipment you plan to add. This calculation determines whether you need 150-amp, 200-amp, or larger service. The existing service entrance cable is replaced with appropriately sized conductors, typically aluminum for overhead service or copper for underground feeds, and the utility company schedules a disconnect to safely complete the work.
Once the upgrade is finished, you notice that multiple high-draw appliances operate simultaneously without tripping breakers, new equipment installations proceed without capacity concerns, and the main panel no longer runs hot under typical loads. Metro West Mini Splits ensures the new service meets current National Electrical Code requirements and receives proper inspection approval before reconnection.
The upgrade includes the service entrance conductors, meter socket, main disconnect, and grounding system, but does not include interior circuit modifications or subpanel installations unless specified. Properties with aluminum branch wiring or outdated panel designs may require additional work beyond the service upgrade itself to meet current safety standards.
Questions Before Starting Your Project
Service upgrades typically raise questions about scope, timing, and what the work involves for both residential and commercial properties in the Marlborough and Southborough area.
How long does a service upgrade take to complete?
Most residential service upgrades require one full day of work once the utility company schedules the disconnect, though complex installations or panel relocations extend the timeline to two days.
What determines the service size I need?
The calculation includes square footage, heating and cooling loads, kitchen appliances, EV chargers, and any motors or equipment that draw significant power, with most modern homes requiring at least 200-amp service.
Does the utility company charge for their part of the work?
The utility typically charges a fee for disconnecting and reconnecting service, and they may require upgrades to their equipment if your existing meter socket or service drop does not meet current standards.
Will I need a permit and inspection?
All service upgrades in Marlborough and Southborough require electrical permits and must pass inspection before the utility reconnects power, which adds approximately one week to the project timeline for scheduling.
What happens to my existing main panel?
The old panel is usually removed and replaced entirely, though in some cases it can be repurposed as a subpanel if the bus bars and breaker spaces remain functional and meet code requirements.
Metro West Mini Splits manages permit applications, utility coordination, and inspection scheduling as part of the service upgrade process. Contact us to arrange a site evaluation and load calculation for your Marlborough or Southborough property.
