New Jersey vs Pennsylvania Electrical Code
Side-by-side comparison
| Factor | New Jersey | Pennsylvania |
|---|---|---|
| NEC edition | NEC 2020 | NEC 2020 |
| Compliance score | 82/100 (Moderate) | 67/100 (Permissive) |
| Electrician license | Required | Required |
| License name | Electrical Contractor License | Electrical License (varies by jurisdiction) |
| Permits required | Yes | Yes |
| State amendments | Yes | No |
| Homeowner exempt | Yes | Yes |
Key differences
- New Jersey has state-specific amendments to the NEC, indicating active code review and oversight.
Licensing requirements
New Jersey
New Jersey requires a Electrical Contractor License through the New Jersey Board of Examiners of Electrical Contractors. Homeowners are exempt for work on their own primary residence.
Pennsylvania
Pennsylvania requires a Electrical License (varies by jurisdiction) through the Local jurisdictions (no statewide license). Homeowners are exempt for work on their own primary residence.
Wire sizing is identical. NEC Table 310.16 ampacity values have not changed since NEC 2017. Whether you are wiring in New Jersey or Pennsylvania, a 20A circuit uses 12 AWG copper and a 30A circuit uses 10 AWG copper. The differences between states are in code enforcement, not in the wire sizing itself.
GFCI requirement differences
Both states enforce NEC 2020, so GFCI requirements are identical. See our kitchen GFCI guide and bathroom GFCI guide for detailed room-by-room requirements.
Frequently asked questions
Which state has stricter electrical codes, New Jersey or Pennsylvania?
New Jersey has stricter enforcement with a score of 82/100 vs 67/100. The score reflects NEC edition recency, licensing requirements, permit enforcement, and state amendments.
Is my electrician license from New Jersey valid in Pennsylvania?
Electrician licenses are generally not transferable between states. If you hold a license in New Jersey, you will typically need to apply separately in Pennsylvania. Some states offer reciprocity agreements, but these vary. Contact the licensing authority in Pennsylvania directly for requirements.
Is the wire size different in New Jersey vs Pennsylvania?
No. Wire sizing per NEC Table 310.16 is identical regardless of which NEC edition a state enforces. A 20A circuit requires 12 AWG copper in both New Jersey and Pennsylvania. The ampacity values have not changed since NEC 2017.
Do both New Jersey and Pennsylvania require electrical permits?
Both states require electrical permits for most work. Common permit-required projects in both states include new circuits, panel upgrades, service changes, and EV charger installations.
NEC 2023 references verified April 2026