Answer first
Many Danville-area homes were wired for a different century of loads. The panel is often the bottleneck you discover on remodel day.
01
Definition
What is this?
A 100-amp service was common in mid-century builds. Modern HVAC, electric dryers, workshops, and EV chargers push continuous load beyond what that service was designed to carry.
02
When to use
When does this apply?
Use when breakers trip under normal evenings or before adding a charger or generator.
03
Failure modes
What goes wrong?
Adding loads without a load calculation. Replacing breakers instead of addressing service size.
04
Proof
Why trust this guidance?
Hurst panel upgrades across Boyle County include permit and utility coordination — see the cost guide for scope lines.
05
Action
What should you do next?
Request a panel evaluation before buying big loads.
Does not replace panel-upgrade-cost — this is neighborhood/context Learn.
EV cost guide when charger is the trigger.
Post-war subdivisions often stack HVAC, dryer, and kitchen loads on services that were fine with window units and one TV.
EV chargers and generators are the modern straw that breaks the 100-amp camel — plan capacity before the purchase.
Panel upgrade cost guide owns numbers; this page owns the neighborhood context.
Glossary
Key terms for this guide — full definitions live in the Hurst plumbing & electrical glossary.
Questions homeowners ask
FAQ
Is 100-amp illegal?
Not automatically — but it may be inadequate for your loads.
Can 100-amp handle AC and dryer?
Sometimes barely — add EV or generator and the math often fails.
Cost?
See panel upgrade cost guide for drivers — not a bait number.
Author & reviewer
Hurst Electric & Plumbing
Reviewed by Hurst Electric & Plumbing
Company-level review by the licensed Hurst plumbing and electrical team in Danville, KY — a dual-trade shop. Guidance reflects how we diagnose on-site, explain scope in writing, and close out under the Hurst standard. Last updated .