Your work
Every schedule, field log and saved calculation on your account, newest first and one click from its tool — with the gloves and grounding tests coming due.
OpenMembers
The free calculators answer one question at a time. Members tools take a whole schedule. An account is free.
Your work
What you have saved, in one place.
Circuits & Conductors
Load calculations and sizing the wire — Article 220, drop, ampacity, terminations, grounding, transformers, motors, fault current. 8 Members tools
Circuit & Feeder Schedule
The whole panel schedule sized at once — feeders, services, branch circuits, motors, EV chargers, and VFDs in one workbook, each on the rule that governs it, with the device, the EGC or GEC, and the drop.
OpenBatch Conductor Sizing
A feeder and branch-circuit schedule at once — Excel or CSV template in, sized workbook out — with your saved schedules underneath.
OpenArticle 220 Load Schedule
Every unit and building of a project in one workbook — standard and optional methods side by side, the lower governing, service device, 220.61 neutral, 310.12 conductor, project totals.
OpenData Center Scenarios
Several designs of the same hall side by side — IT load, PUE, redundancy, unit size, ΔT — each run through the whole power-and-cooling chain.
OpenFault Current Schedule
Available fault current at every panel from one spreadsheet — sources and feeders keyed to their parent, the impedance cascading down the tree with the motor contribution.
OpenRack Register
Every rack in the room — U, weight, kW, BTU/h, amps per PDU, plugs against the limits, rolled up by row and for the room.
OpenLighting Schedule
Every room — fixtures by the lumen method, watts, W/ft², maintained footcandles, circuits, and the building total.
OpenMulti-Hall Data Center Model
Every hall on the campus — the power and cooling chain per hall, UPS and generator blocks at the redundancy, rolled up by building, cumulatively by phase, and for the campus.
OpenRaceways, Boxes & Pulls
Fill, bends, boxes, tray, and getting the cable in. 1 Members tool
Raceway Run Schedule
Every run checked at once — fill against the Chapter 9 limits, the smallest raceway that works, and the bend total between pull points.
OpenProcurement & Prefab
Cut lists, reels, buy quantities, and lead times. 2 Members tools
Procurement Order Sheet
Cut lists for every item optimised against the stock length — pieces, sticks, waste, order quantity with allowance, extended cost.
OpenLead-Time Tracker
Every long-lead item on the backward pass from its install date — submit-by, release, ship, on-site — against today, with the float.
OpenCivil & Site
Concrete for duct banks, pads, bases, formwork, thrust blocks, rebar, trenches, and the holes they go in. 3 Members tools
Pour Schedule
The concrete for the whole site by pour day — duct-bank sections, pads, and bases, yards to order and trucks per day.
OpenCut/Fill Balance Report
The whole site's earthwork — bank cut, compacted fill, topsoil kept separate, loose haul and trucks, area subtotals, the site import/export, and the grade change that balances it.
OpenTrench & Earthwork Schedule
Every trench run — sloped top width by soil type, cut, spoil, bedding, backfill, trucks, and the 5 ft protective-system flag, with a site total.
OpenLogistics
Lifts, rigging paths, truck loads, and the paper that goes on the truck. 2 Members tools
Lift Register
Every pick on the job — gross load against the chart at the radius, sling tension per leg against its WLL, wind on the load, and which lifts are critical.
OpenSaved packing lists
Packing lists and bills of lading saved on your account from the free page — reuse last week’s list for this week’s truck.
Packing List & BOLSafety
NFPA 70E boundaries and PPE, incident rates, noise dose, fall clearance, heat stress, NIOSH lifting, glove and grounding logs, and methods of procedure. 3 Members tools
Noise Exposure Register
The shift's noise by crew and task — each task's share of the dose, the crew's total and TWA, who is over the action level or the PEL.
OpenSafety Stats Trend
TRIR, DART, LTIR, and severity by period with cumulative rates — and the year's OSHA 300A: a summary page to sign and post, and the ITA upload file.
OpenMOP library
Every MOP you write on the free MOP Builder saved to your account with its prerequisites, PPE, hazards, steps, back-out, and verification — load, revise, save as a new version.
MOP BuilderField Logs & Records
Torque verification, insulation resistance, and the panel directory — the paper the inspector reads. 2 Members tools
Closeout Packet
Pick the saved torque, megger, glove, grounding, and directory logs for a project and print them as one packet with a signature block and the next test dates.
OpenField logs that persist
Signed in, the Torque, Insulation Resistance, and Circuit Directory pages gain a “Your saved logs” panel — save a panel's terminations or readings, come back, update.
Torque Megger DirectoryReference & Jobsite
The jobsite calculator, unit and fastener conversions, AC to DC, NEMA plugs and enclosures, and wire colour codes. 1 Members tool
Your saved calculations — on every calculator
Signed in, every free calculator gains a “Your saved calculations” panel: name a calculation, save it to your account, load it back with every field and list line restored. Ninety-nine calculators, one habit.
Try it on Voltage Drop All calculatorsYour account
Work or personal email, a password checked against known breaches and never stored in the clear, and a device list you control. Paid tools appear here as they ship — members see them first.
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