Create your account
Sign up to sync your jobs, material catalog, and panel schedules across devices, and collaborate with your team on shared plans.
Account creation may require email confirmation. You can explore the field tools before signing in.
Welcome to your electrical workbench.
An organized field toolkit for electricians—manage material lists and jobs, work through bending and electrical calculations, and review drawings and code references in one place.
Get set up in three steps
Build your materials once, then organize everything around the job you select.
Build your material catalog
Create a reusable master list or enter materials as you go. Add catalog items to individual jobs without retyping them.
Create and select a job
Make a job for each project, then use the Current job selector at the top to choose where materials, panels and tasks belong.
Work from the field
Track stock, plan panels, mark up shared PDFs and use calculation tools—all tied to the work you're doing.
Everything in one place
Tap any tool to open it directly.
Electrical calculations, sizing charts, and NEC summaries are field references. Verify measurements and the code edition adopted for your project before installation.
Jobs
Create a job for each project; keep its materials, photos, notes, tasks and documents organized.
Panel schedules
Choose a job first, then create, edit, and export its panel schedules. Each panel stays attached to that job.
Panel schedules
Create multiple panels per job, select voltage and colors, and group breaker positions.
Inventory
Select a job, then view or adjust the materials assigned to that job. Add more from your Materials catalog.
Job material inventory
Materials catalog
Build a reusable list of your electrical materials. Tap Add to job to put an item on the job selected below. Your catalog stays intact.
Saved materials
Tap + to add 1 unitHow this works
A catalog item is a reusable material template. On hand in the catalog is optional shop stock, separate from the quantities assigned to a job. Adding a catalog item to a job does not subtract shop stock.
Job tasks
Track field to-dos for the selected project.
Add a task
Task checklist
Prints & markups
Upload electrical drawings, measure from a calibrated scale and share annotated pages with your job team.
Job drawings
Drawings follow the Current job selected above. Only approved members can see shared prints.
Drawing
Move around the drawing by scrolling or swiping. Choose a tool to draw.
Sign in to sync and share your prints. The PDF viewer needs an internet connection to load drawings.
Specs & job photos
Save photos and links to specs, submittals and documents with the active job. Photos are compressed to conserve device storage.
Job photos
Specifications / submittals
Conduit fill calculator
Choose a raceway, add every conductor or cable—including grounds—and calculate raceway fill using Chapter 9 Tables 1, 4 and 5. Works with mixed wire sizes and insulation types.
1 · Choose your conduit
2 · Add your conductors
Count grounds tooFor THHN, XHHW and THW, areas include insulation. Select Bare stranded for a bare equipment ground, or enter a manufacturer-listed outside diameter for a cable assembly. An insulated ground must be entered under its insulation type.
3 · Conduit fill results
Add your wire sizes and quantities to see fill.
NEC Chapter 9 · Tables 1, 4, 5 and 8
Fill percentage is not ampacity derating. Check 310.15(C)(1), raceway suitability, temperature limits, wet-location ratings, pull conditions, and the NEC edition adopted locally. The smallest fitting conduit may not be the best practical pulling size. Cable dimensions must match the actual listed assembly. Table 1 Notes 4 and 9 may apply.
Open the official NFPA 70 reference ↗Conduit bending
Pick the bender brand, style and model, then select the actual conduit and shoe. Save your shoe-chart values for next time.
1 · Choose your bender
2 · Enter your shoe-chart figures
Model listings identify actual bender products, but most chart values are intentionally blank until verified for your exact shoe. Manufacturer manuals should take priority over a generic calculation.
3 · Select a bend
Marking & layout
Electrical calculations
Fast field estimates with labeled inputs and transparent formulas.
Voltage drop estimate
Power / current
Wire & unit conversions
Convert AWG, kcmil, square millimeters and distance without confusing conductor area with ampacity.
AWG / kcmil to metric
Area comparison only, not ampacity. Equivalent solid-wire diameter is not the outside diameter of stranded cable.
Length conversions
Wire sizing charts
Fast lookup for branch circuits, feeders, equipment grounding and grounding-electrode conductors.
Conductor ampacity quick chart
Common 2023 NEC Table 310.16 base ampacity values for copper and aluminum conductors, 30°C ambient, with no more than three current-carrying conductors. The 2026 NEC adds some small-conductor provisions; verify the edition adopted where you work.
Branch / feeder sizing worksheet
Preliminary ampacity sizing based on continuous and noncontinuous load. Uses the selected material above. This is not a complete code-compliance or demand-load calculation.
Equipment grounding conductor (EGC)
Minimum wire-type equipment ground based on the amp rating or setting of the breaker/fuse ahead of the circuit. Reference: NEC Table 250.122. This is NOT the grounding electrode conductor table.
Common EGC quick chart
Grounding electrode conductor (GEC)
Service grounding electrode conductor reference based on the size/area of the largest ungrounded service conductors, not the OCPD rating. Reference: NEC Table 250.66.
NEC article finder
Find the article number and subject quickly, then open the authoritative NFPA code for the actual requirements.
Search NEC topics and article numbers
Article index
Article numbers, related topics, and direct access to practical installation guides.
How NEC lookup works
This searchable index provides original topic summaries and article numbers, not the copyrighted NEC text. The official NFPA page includes code edition selection and an available Free Access viewing option; some NFPA LiNK features or subscriptions may require an account. Full article text cannot be copied or embedded here without the appropriate license.
Activity & saved calculations
Recent changes and saved field math on this device.
App settings
Make Electrical Workbench comfortable to use in the field. These settings are saved on this device.
Appearance
Switch between the dark graphite layout and a brighter light layout. Gold accents stay in both themes.
Startup behavior
Choose which part of the app opens first. Direct links to specific screens still work normally.
App updates
Electrical WorkbenchAccount & data
Your jobs and materials are kept separate from these display preferences. Use the existing account, sync and backup screens to manage them.
Backup & setup
Export your job records before switching phones, browsers or websites.
Export and restore
JSON preserves jobs, catalog, planned materials, tasks, links, photos, shoe profiles and activity history.
Restoring replaces everything currently stored in this app. Save a backup first.
Data & limitations
User management
Review registrations, assign who can work in your team spaces, and keep track of permission changes.
Checking administrator permission…
Workspace access
Select one of your workspaces before assigning users. Accounts can have separate access levels in each workspace.
Workspace assignments load after authentication.
Editor can edit all workspace jobs. Viewer can see but not edit. Job-only Member needs an individual job assignment. Not a member removes workspace access.
Registered accounts
Workspace permissions and application administrator access are separate. Only the application owner can appoint new application administrators.
Permission history
Records who changed account and workspace access, including the target and time.
Administrator notes
Account email confirmation and login history come from Supabase Authentication. Removing a person from one workspace does not delete their login or other workspaces.
For project-specific edit/view rights, use Sync & team → Grant a specific job. Keep administrator access limited to people you trust with the user directory.
Open Supabase Authentication ↗Sync & team
Sign in once to sync jobs and materials across your devices and your team. Electrical Workbench is already configured with its secure Supabase database; offline edits are queued automatically.
Sync status
No workspace selectedSign in to sync across your devices
Account access
✓ Your Supabase cloud database is already connected. No connection settings are required.
Use Log in at the top of the sidebar to sign in or create an account without leaving your current page.
2 · Choose a workspace
Each workspace has its own materials and jobs. Creating one doesn't overwrite local records or automatically import anything.
Bring over your current job data
Once you're in the workspace, use this to copy the old records saved on THIS device into the cloud. Export a JSON backup before starting. The import queues new/changed records without wiping the existing workspace.
3 · Team and permissions
Invite a coworker
Invitations are one-time codes valid for seven days. Share codes privately, not in a public chat.
Grant a specific job
Use for job-only members. Workspace editors/viewers already have access to all jobs.
Team audit trail
Record-level activity showing who changed data and when. Owners and workspace editors can review the trail.
Team members
Offline queue and conflict review
Changes save locally first. The app checks the cloud about every 18 seconds while open and online. If someone edits the same record first, your change stays queued until you choose which version wins.
Shared cloud editing needs an active internet connection for immediate updates. Offline changes queue on this device; keep backups. Changes to the same record from two devices require conflict review. Do not treat schedules as verified electrical design documents.