Many homes in Connecticut still operate on 100-amp electrical service. Years ago, that was more than enough.

Today? Not always.

With modern appliances, EV chargers, HVAC systems, and home offices, electrical demand has dramatically increased. So how do you know when it’s time to upgrade to 200 amps?

⚡ What Does “100 Amp vs 200 Amp” Mean?

Your electrical service size determines how much electricity your home can safely handle at one time.

• 100 amps = Limited capacity, common in older homes
• 200 amps = Modern standard for most residential homes

Think of it like plumbing. If you try to push too much water through a small pipe, pressure builds. Electrical systems work the same way.

🚩 Signs You May Need a 200 Amp Upgrade

1️⃣ Your Panel Is Full

If there’s no space for additional breakers, expansion becomes difficult or unsafe.

2️⃣ Breakers Trip Frequently

Regular tripping may indicate your system is operating near its maximum load.

3️⃣ You’re Adding Major Appliances

Planning to install:

• EV charger
• Electric range
• Hot tub
• Central air
• Electric water heater
• Basement renovation

These additions significantly increase demand.

4️⃣ Your Home Is 25+ Years Old

Older homes were not designed for today’s electrical usage.

5️⃣ Lights Dim When Appliances Start

If lights flicker when the AC or microwave turns on, your system may be strained.

🔌 Why 200 Amps Is the Modern Standard

A 200-amp service provides:

• More breaker space
• Higher electrical capacity
• Improved safety margins
• Future expansion capability
• Better support for EV and smart home systems

Most new homes today are built with 200-amp service as standard.

🧮 Load Calculations Matter

Before upgrading, electricians perform a load calculation based on guidelines from the National Fire Protection Association under the National Electrical Code.

This determines whether:

• A full service upgrade is required
• A subpanel would be sufficient
• Load balancing adjustments can solve the issue

Not every home automatically needs 200 amps — but many do.

💰 Benefits Beyond Capacity

Upgrading to 200 amps can also:

• Increase home resale value
• Improve buyer confidence
• Reduce insurance concerns
• Support future renovations
• Lower the risk of overloaded circuits

If you plan to stay in your home long-term, it’s often a smart investment.

🛠 What’s Involved in a Service Upgrade?

A typical 100-to-200 amp upgrade may include:

• New meter socket
• New main panel
• Upgraded service cable
• Grounding system updates
• Permit and inspection
• Coordination with the utility company

It’s not just swapping a panel — it’s upgrading the entire service safely and to code.

⚠️ Final Thought

If your electrical system struggles to keep up with your lifestyle, it’s not something to ignore.

An overloaded system may work — until it doesn’t.

Upgrading to 200 amps isn’t just about convenience. It’s about safety, reliability, and future-proofing your home.