# Electrical Panel Load Screening Calculator — United States

> Check a specified single-phase demand scenario without applying an invented code demand schedule. USD planning view; stated limitations apply.

Page: https://askcalculators.com/us/panel-load/
Definition: https://askcalculators.com/us/panel-load/definition.json
JSON Schema: https://askcalculators.com/us/panel-load/schema.json
Version: 20.16.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/us/panel-load/?connectedWatts=18000&demandFactor=75&continuousShare=25&continuousMultiplier=1.25&voltage=240&powerFactor=1&panelRating=100&unitRate=0&laborCost=0&deliveryCost=0&otherCost=0&costMultiplier=1&spreadPercent=15&taxRate=0

## Inputs
- connectedWatts: Total connected load, W; type=number; required; default=18000; min=0; max=1000000000
- demandFactor: Explicit engineered demand factor; type=percent; required; default=75; min=0; max=100
- continuousShare: Continuous share of demand load; type=percent; required; default=25; min=0; max=100
- continuousMultiplier: Specified continuous-load multiplier; type=number; required; default=1.25; min=1; max=2
- voltage: Single-phase line-to-line supply, V; type=number; required; default=240; min=1; max=100000
- powerFactor: Power factor; type=number; required; default=1; min=0.1; max=1
- panelRating: Entered panel current rating, A; type=number; required; default=100; min=1; max=1000000
- unitRate: Material price per quoted panel project; type=money; required; default=0; min=0; max=1000000000000
- laborCost: Total labor allowance; type=money; required; default=0; min=0; max=1000000000000
- deliveryCost: Delivery allowance; type=money; required; default=0; min=0; max=1000000000000
- otherCost: Other fixed costs; type=money; required; default=0; min=0; max=1000000000000
- costMultiplier: Material/labor multiplier; type=number; required; default=1; min=0.1; max=10
- spreadPercent: Low/high sensitivity around the entered total; type=percent; required; default=15; min=0; max=100
- taxRate: Explicit tax allowance; type=percent; required; default=0; min=0; max=100

## Outputs
- designWatts: Adjusted scenario load, W; format=number
- current: Scenario current, A; format=number
- headroom: Arithmetic rating minus scenario current, A; format=number
- materialCost: Material cost; format=currency
- laborCost: Labor allowance; format=currency
- deliveryCost: Delivery allowance; format=currency
- otherCost: Other specified costs; format=currency
- tax: Entered tax allowance; format=currency
- low: Low cost scenario; format=currency
- mid: Middle cost scenario; format=currency; primary
- high: High cost scenario; format=currency

## Formula
scenario current = connected watts × demand factor × (1 + continuous share × (multiplier − 1)) ÷ (voltage × power factor).

Inputs are converted to canonical units before evaluating this stated formula.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.

Notice: Illustrative defaults are not local quotes or verified legal rules. Dated reference components and user-entered assumptions are explicitly distinguished. Professional review is pending.