ai.sparkquote由 sparkquote.ai 发布官方发布者v1.0.1更新于 Oct 25, 2026
NEC 2023 electrical calculators: wire size, ampacity, voltage drop, conduit fill, box fill, load.
远程 MCP 服务器，提供 NEC 2023 电气计算：导线选型、载流量、电压降、线管与接线盒填充、住宅负荷、配电盘排布和投标报价。
Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。
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{
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"sparkquote-nec-calculators": {
"type": "http",
"url": "https://sparkquote.ai/mcp"
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}
}Wire size calculator
Minimum conductor size for a circuit: NEC Table 310.16 ampacity at the termination temperature rating, the 240.4(D) small-conductor limits, voltage drop over the run, and the Table 250.122 equipment grounding conductor, increased in proportion under 250.122(B) when voltage drop upsizes the conductors.
amps必填feet必填temp必填limit必填phase必填volts必填material必填Voltage drop calculator
Voltage drop for a given conductor size, current and one-way length, single- or three-phase, from NEC Chapter 9 Table 8 circular mils (VD = 2·K·I·L / CM, or √3 for three-phase).
awg必填amps必填feet必填phase必填volts必填material必填Watts to amps calculator
Current drawn by a load in watts at a voltage and power factor, single- or three-phase, plus the 125% continuous-load value.
pf必填phase必填volts必填watts必填Conduit fill calculator
Percent fill and maximum number of THHN/THWN-2 conductors of one size in EMT or PVC Schedule 40, from NEC Chapter 9 Tables 1, 4 and 5.
awg必填size必填type必填count必填Box fill calculator
Minimum outlet box volume from NEC 314.16(B): conductor, device (2 each), clamp and grounding allowances times the Table 314.16(B) volume for the largest conductor.
awg必填clamps必填devices必填grounds必填conductors必填Residential load calculator (NEC 220.82)
Dwelling service load by the NEC 220.82 optional method: 3 VA/ft² lighting, small-appliance and laundry circuits, fixed appliances, demand factor, heating or cooling, and the minimum standard service size. Leave an appliance out to count it as 0 VA.
evhvacsqft必填dryerotherrangesmall必填heaterlaundry必填disposaldishwasherOhm's law calculator
Ohm's law and power: give exactly two of voltage, current, resistance and power; the other two are calculated.
iprvPanel schedule generator
Lays circuits out on a 120/240 V single-phase or 208Y/120 V three-phase panel and totals the load per phase with the imbalance.
spaces必填system必填circuits必填Electrical bid calculator
Electrical bid price from materials, markup, labor hours and rate, job costs, overhead and a target net margin (price = break-even / (1 − margin)).
rate必填hours必填directmargin必填markupoverhead必填materials必填NEC Table 310.16 ampacity lookup
Allowable ampacity of one insulated conductor from NEC Table 310.16 (not more than three current-carrying conductors in a raceway or cable, 30°C ambient), before any adjustment or correction factors and before the 240.4(D) small-conductor limits.
size必填temp必填material必填已满足适用检查项的 83%
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