TL;DR
SER cable is service-entrance cable, style R: a round assembly of two or three insulated aluminum or copper conductors plus a bare neutral or ground, jacketed for above-ground feeder use. Electricians run it from the meter to the main panel and for heavy feeders to subpanels, ranges, and EV-charger subpanels, with 2/0 aluminum common for 150-amp runs.
What it means
SER cable is service-entrance cable, style R: a round assembly of two or three insulated aluminum or copper conductors plus a bare neutral or ground, jacketed for above-ground feeder use. Electricians run it from the meter to the main panel and for heavy feeders to subpanels, ranges, and EV-charger subpanels, with 2/0 aluminum common for 150-amp runs. The NEC limits its ampacity when buried in attic insulation, a detail that matters in service upgrades.
Where it sits in the glossary
SER cable is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
License: CC-BY-4.0 — quote freely with attribution to ProFix Editorial Team / ProFix Directory.