Coming soon — not built yet

How many EV chargers can your building actually support?

ChargeRight is building a code-cited answer for multifamily and commercial electrical services — grounded in NEC Article 625, 750.30(C), and the Table 220.84 multifamily optional method where a building qualifies. Built for the contractors and estimators who bid this work, not for a free amenity check.

One email, when it's live. Nothing else.

The question this is meant to answer

Given a building's existing service size and a target charger count: does the service support it as-is, does an automatic load management system make it work without a service upgrade, or is a service upgrade the honest answer? That's the report ChargeRight is building — a starting point for a bid, not a replacement for engineering.

NEC 625.42

"Rating. The equipment shall have sufficient rating to supply the load served. Electric vehicle charging loads shall be considered to be continuous loads for the purposes of this article. Where an automatic load management system is used, the maximum equipment load on a service and feeder shall be the maximum load permitted by the automatic load management system."

This is the core rule the report is built around: EV charging load is continuous, and an ALMS lets the maximum load on the service or feeder be capped at what the system actually permits — often the difference between needing a service upgrade and not.

Quoted NEC wording is from the 2017 edition unless a later edition is noted. States adopt NEC editions on their own schedules — confirm the edition your jurisdiction enforces.

Table 220.84 doesn't apply to every building, and the report will say so

The multifamily optional method in Table 220.84 is a faster path to a feeder or service load for three or more dwelling units, but only when a building clears its eligibility gate. Overstating this is a common failure mode for tools in this space, so the report will check the gate before ever offering the shortcut.

NEC 220.84(A)

"Feeder or Service Load. It shall be permissible to calculate the load of a feeder or service that supplies three or more dwelling units of a multifamily dwelling in accordance with Table 220.84 instead of Part III of this article if all the following conditions are met: (1) No dwelling unit is supplied by more than one feeder. (2) Each dwelling unit is equipped with electric cooking equipment. (3) Each dwelling unit is equipped with either electric space heating or air conditioning, or both."

All three conditions have to be true, not just one. A gas-heat or gas-range building — common retrofit stock — fails this gate outright and falls back to the full Article 220 Part III calculation instead of the Table 220.84 shortcut. The report will apply whichever method the building actually qualifies for.

Quoted NEC wording is from the 2017 edition unless a later edition is noted. States adopt NEC editions on their own schedules — confirm the edition your jurisdiction enforces.

Who this is for

Electrical contractors bidding multifamily or commercial EV retrofit work
Estimators who need a defensible, code-cited starting point before a site visit
Anyone who has run this math by hand and wants it faster, not different

What this is not

HOA boards or property managers looking for a free amenity check — that's a different product with a different buyer
A stamped, permit-ready engineering deliverable — this is not a PE-sealed study and will not claim to be one
A replacement for confirming the final answer with your AHJ

Why this doesn't exist yet

ChargeRight's live engine calculates load for a single panel. A multifamily or commercial capacity verdict needs multi-panel, multi-unit architecture that doesn't exist yet, plus load-management logic for the 625.42 continuous-load math above. That's real engineering, not a config change, and it's only worth building if contractors and estimators actually want it. That's what this page is for.

Want to know when it's live?

One email, no other list. If enough contractors and estimators want this, it gets built.