NEC-aware electrical sizing with transparent assumptions.

Bond metallic water piping and gas piping to the electrical grounding system per NEC §250.104. Frequently missed during plumbing work that replaces a section of metal pipe with plastic — the plastic section breaks the bond and energizes the downstream metal under a fault. This is the electrical guide most relevant to the plumbing audience.

Install a Level 2 EV charger (EVSE) on a 240 V branch circuit per NEC Article 625. Covers load calc, the hardwire vs plug-in decision, the 125 % continuous-load sizing rule, and the GFCI / disconnect requirements.

Compare and install the two code-compliant ways to power a residential panel from a portable generator: a listed mechanical interlock kit on the panel, or a separate manual transfer switch. Covers the decision matrix, inlet selection, and the absolute prohibition on suicide cords / back-feeding without a means to lock out the utility.

Add a new 240 V branch circuit from an existing panel for a dryer, range, or Level 2 EV charger. Covers load calculation, conductor sizing, receptacle choice (NEMA 14-30 / 14-50 / 6-50), and inspection sign-off.

Install or replace GFCI and AFCI receptacles. Covers the NEC 2023 coverage table (where each is required), the LINE / LOAD wiring convention, multi-device protection from a single GFCI, and what to do when the test button doesn't work.

Replace a residential service panel — typically swapping a legacy panel (FPE Stab-Lok, Zinsco, or end-of-life 60 A fuse) for a current code-compliant 100 A or 200 A panel, and re-balance branch circuits across the two hot legs.

Install or replace 3-way switches (one light from two locations) or 4-way switches (one light from three or more locations). Covers conductor identification, traveler routing, and the COMMON-terminal rule.