EV Charger Load Management Worksheet Chart

Use this worksheet after the calculator result to document configured EVSE current, load-management method, existing service capacity, charging schedule, demand limit, and review path.

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Quick reference table

An EV charger load management worksheet is different from an EV wire-size chart. It records whether charging is limited by service capacity, listed energy-management equipment, load sharing, operating schedule, tariff assumptions, and owner charging needs before circuit sizing is finalized.

EV load management record

EV load management record
Worksheet item	Record	Review use
EVSE setting	Rated output, configured output, hardwired or receptacle method	Feeds circuit and demand screen
Service capacity	Existing service rating, load calculation result, spare capacity	Shows whether load management is required
Control method	Listed energy-management system, load sharing, schedule, manual setting	Defines what actually limits demand
Charging need	Daily kWh, charging window, number of vehicles, owner priority	Prevents undersized practical charging
Approval path	Utility, permit, manufacturer, AHJ, commissioning note	Keeps control assumptions reviewable

Load management decision lanes

Load management decision lanes
Decision lane	Document before design	Why it matters
Single charger limit	Maximum EVSE output and locked setting	Wire and breaker review must match the configured limit
Multiple charger sharing	Number of EVSE units and sharing logic	Total demand may differ from nameplate sum
Service constrained project	Service load result and available capacity	Panel space is not proof of service capacity
Schedule constrained project	Charging hours, tariff window, priority load	Demand charge or owner needs can control the plan

Formula basis

Managed charging screen = EVSE current setting constrained by service capacity, control method, schedule, and documented load-sharing rules.

Configured EVSE current is the maximum charger output used for planning.
Service capacity is the available capacity after the service or dwelling load review.
Load sharing is the listed control method that limits one or more chargers or other loads.
Charging schedule documents whether peak, off-peak, overnight, or fleet windows control demand.

Worked examples

Residential service-constrained EVSERecord a 48 A EVSE limited by a listed load-management controller, the service load result, configured output, commissioning note, and AHJ follow-up.

Two-charger load sharingDocument two Level 2 chargers, shared maximum current, schedule, owner charging priority, circuit assumptions, and service-capacity review before finalizing branch circuits.

Assumptions. Balanced load and line-to-line voltage assumptions behind this chart.

This worksheet documents load-management assumptions and does not select final conductor size by itself.
Load-management equipment should be listed and installed according to manufacturer instructions and adopted code requirements.
Utility programs, tariffs, permit requirements, and owner charging needs can change the acceptable charging strategy.

Code and standard notes. Planning limits that should be checked before final equipment selection.

Use this chart as a calculation record; verify adopted NEC EVSE and load-management requirements, EVSE listing, control-equipment instructions, service-load calculation, utility rules, local amendments, AHJ expectations, and qualified-person review before final installation.

How to use this chart

1Start with service capacityRecord the service load calculation result, panel rating, spare capacity, and whether the EVSE can operate without controls.

2Document the control methodWrite the listed energy-management equipment, load-sharing rule, configured output, schedule, and commissioning lockout method.

3Connect to circuit reviewUse the worksheet before opening wire-size, breaker, voltage-drop, and service-capacity checks for the EV branch circuit.

Worksheet checklist. Record source basis, review gaps, and assumptions before using the chart result.

Capture charger demandRecord EVSE nameplate current, configured output, voltage, charger count, daily kWh need, and charging window.
Capture service basisDocument service size, panel rating, existing major loads, load calculation result, and available capacity.
Capture approval controlsList control equipment, utility or tariff note, manufacturer instructions, AHJ review, and commissioning verification.

Common mistakes to avoid. Review these before turning chart current into an equipment decision.

Treating load management as a substitute for conductor, breaker, terminal, and service-load review.
Recording an adjustable EVSE setting without noting how the setting is locked, commissioned, or controlled.
Adding multiple chargers by summing convenience assumptions instead of documenting the actual sharing logic and owner charging need.

Frequently asked questions

These answers explain how to use the chart without turning a quick reference into a final design decision.

Is load management the same as wire sizing?

No. Load management limits demand or schedules charging. Wire sizing still needs conductor, breaker, terminal, voltage-drop, equipment, and service review.

Can a charger schedule replace a listed control?

A schedule can be a planning assumption, but final acceptance depends on the control method, equipment listing, adopted NEC edition, utility rules, and AHJ review.