What’s New

October 18, 2026

New Telecom Room Layout Planner

Draw rectangular or custom rooms one wall at a time with lengths, any turn angle and a live preview. Place editable racks, wire managers, cable runway and sleeves; snap to equipment, walls and backboard faces. Group equipment, rotate grouped runway, enter feet and inches, and add custom measurements. Name equipment and control access-space, dimension and label visibility. Save editable projects and export branded SVG drawings with readable door dimensions and plywood-colored backboards. Verify manufacturer dimensions and local requirements; planning checks do not establish code compliance.

Open Rack Elevation Designer →

October 11, 2026

Performance fix: lighter fiber-page loading

Fiber hub links now preload destinations only when you hover, focus, or touch them, rather than loading linked tools automatically. Cable-tray styles load with that calculator instead of on unrelated pages. Checked the fiber hub, dBm/mW converter, and splitter-loss calculator under simulated slower mobile conditions. Calculation formulas, limits, rounding, and report values remain unchanged.

Open Rack Elevation Designer →

October 9, 2026

Performance fix: smoother calculators and fiber drawings

Reduced repeated conduit calculations and cable-illustration work, deferred hidden conduit drawings until results or printing, and reused fiber-link analysis while panning and selecting items. Optional fiber setup tools load when needed, and fiber-hub styles no longer load on unrelated pages. Calculation formulas, limits, rounding, and report values remain unchanged.

October 2, 2026

Fiber Link Designer: draw the route and explain the loss

Build point-to-point fiber drawings with buildings, panels, maintenance holes, optical endpoints, mated connections, and fusion or mechanical splices. Link setup applies shared cable settings; double-click a cable to enter distance, with feet or meters selected once for the drawing. Choose sourced optic presets, including selected 40G and 100G models, or enter custom specifications. Link summary explains launch power, component losses, receiver input, reserve and overload in either direction. Preliminary assumptions are marked and never become a verified pass. Save editable projects and export branded PDF reports or SVG drawings. Planning results do not replace application checks, manufacturer specifications or installed-link testing.

Open Rack Elevation Designer →

September 27, 2026

Welcome overview and clearer saddle bending guides

The homepage now offers a dismissible welcome overview with an optional do-not-show-again preference and the 4-inch versus four 2-inch EMT insight. Reopen it under Help & site links. Three- and four-point saddle guides now use neutral panels, detailed generic bender illustrations, visible measured marks, selectable bend steps, and idealized progressive profiles. Verify the actual tool references and finished dimensions; diagrams are not to scale.

Open Rack Elevation Designer →

September 26, 2026

Clearer calculator workspaces and professional PDF reports

Calculator workspaces now use compact headers, accessible project details, consistent Back and Next navigation, and clearer results. Neutral information panels and blue selections keep green focused on passing status. Download professionally formatted PDF reports with improved pagination. The Rack Elevation Designer and Fiber Optic hub also have cleaner layouts with more room for your work.

Open Rack Elevation Designer →

September 25, 2026

Start fresh with New project

The Rack Elevation Designer now includes a New project button beside Open and Save. Save your current project or cancel before starting with one empty 24U RACK-01. Previous racks, equipment, managers, connections and project details are reset; reusable templates are kept. Undo can restore the previous project during the current editing session.

Open Rack Elevation Designer →

September 25, 2026

Clearer rack deletion, automatic numbering and manager connections

Delete a rack directly from its properties with confirmation and Undo. Default rack names renumber sequentially after deletion, while custom site names and equipment labels stay unchanged. The confirmation explains renames and retained shared managers. Selecting a rack opens its matching elevation; hiding a rack from the arrangement is clearly separate from deleting it. Unattached managers are identified with explicit attach or delete controls, and shared managers stay connected to surviving racks without duplication.

Open Rack Elevation Designer →

September 25, 2026

Reliable empty-side rack placement

Fixed an incorrect accessory warning when adding a rack beside an empty rack side. Removing or moving an unshared vertical manager now updates the complete arrangement too. Older detached arrangement items and neighboring racks' managers no longer falsely block placement; existing managers and genuine shared connections remain protected, with Undo and saved-project support preserved.

Open Rack Elevation Designer →

September 25, 2026

Quiet rack draft recovery

Removed the recurring previous-draft banner from the Rack Elevation Designer. A valid saved browser draft now resumes automatically when you return, keeping the workspace clear without discarding your work. Project-file backups and the existing autosave behavior remain available.

Open Rack Elevation Designer →

September 25, 2026

Easier rack connections and click-to-edit properties

Click a rack or vertical cable manager to edit its properties, including manager width and device names. Add a rack to the left or right of another rack and connect it to one existing manager, or add one new shared manager. The connected side is occupied and cannot receive another accessory; existing managers are never combined or automatically removed. Switch between Selected rack for equipment placement and Entire arrangement for the complete lineup. Widths and names stay synchronized, and combined schedules count each physical manager once. Disconnect and Undo preserve control of your layout. Existing saved projects remain supported, with the same fixed-height desktop workspace and mobile panel tabs.

Open Rack Elevation Designer →

September 25, 2026

Multi-rack projects, reusable templates and rack-row drawings

Plan up to 20 independently named racks in one project, reuse rack templates, and give devices optional site-specific names. Arrange racks and shared vertical cable managers into a single row with editable manager widths, including 4, 6, 8, 10 and 12 inches or a custom width. Map existing rack-side managers to a shared manager so schedules count it once. Export the complete row as landscape SVG, PNG or browser Print / Save as PDF with equipment schedules; choose 11×17, A3 or 24×36 paper. Individual-rack exports remain available. Save portable project and template files, with older single-rack projects supported. The editor retains its fixed-height workspace and internally scrolling panels. Rack drawing widths are user-verified placeholders, not manufacturer dimensions; drawings do not certify physical fit or installation compliance.

Open Rack Elevation Designer →

September 25, 2026

Rack Elevation Designer and Network Rack Planner

Create a front elevation for a 1–60U network rack or server cabinet with 21 original generic equipment stencils. Drag and snap patch panels, switches, fiber enclosures, cable managers, shelves, servers and power equipment into place with overlap protection, reserved space and remaining-U tracking. Edit size keeps equipment readable at normal browser zoom; Fit rack provides an overview, and Expand workspace creates more vertical editing room. Save and reopen project files, recover a browser draft, undo changes, and export vector SVG, high-resolution PNG, a CSV equipment schedule or a drawing through the browser’s Print / Save as PDF dialog. Find the designer under Pathways and enclosures in the Calculators menu. Drawings are for space planning: verify actual manufacturer dimensions, mounting, depth, load ratings, cooling and electrical requirements before installation.

Open Rack Elevation Designer →

September 6, 2026

Electrical Box Fill Calculator

Added a scoped 2023 NEC 314.16 workbench for 18 AWG through 6 AWG conductors in one undivided outlet, device, or junction-box space. The five-step no-scroll workflow requires explicit confirmation of usable box volume, counts ordinary conductors and 300.14-length qualifying loops or coils, applies the four-entering-EGC threshold and quarter allowances beyond four, and separately includes ordinary internal clamps, luminaire studs, hickeys, device yokes, and the 2023 terminal-block-assembly allowance. Results show every rule, governing conductor size, allowance count, required volume, remaining volume, and an unrounded pass/fail decision. Versioned fragment share links require the recipient to reconfirm box volume; branded PDF/CSV output, authoritative references, calculation boundary tests, FAQ data, metadata, sitemap coverage, and calculator navigation are included.

August 16, 2026

Fiber Optic Maximum Distance Calculator

Added the fourth released fiber calculator for loss-limited reach planning. The workbench derives equipment power budget from minimum transmitter output and receiver sensitivity, subtracts connections, splices, other passive loss, and engineering reserve, then divides the remaining fiber-loss allowance by the selected attenuation. An optional equipment, application, or project reach limit governs when it is shorter. Results clearly warn that attenuation budget alone does not verify modal bandwidth, chromatic dispersion, optical path penalties, or published protocol reach. Equipment, Fixed loss, and Fiber & reserve use consistent field cards with a readable full-width profile selector, compact live-result treatment, and single-column phone layout. Physical-unit conversion preserves an entered reach limit, exact-zero budgets produce an accurate no-distance explanation, and very large mathematically supported results remain renderable. Link Budget handoffs work in both directions within its supported range and explain when an entered reach limit is needed before handoff. Share restoration, CSV, a branded one-page engineering PDF, focused boundary tests, unique metadata, and structured FAQ data are included.

August 16, 2026

Fiber Optic Splitter Loss Calculator

Added the third released fiber calculator for balanced 1×N splitter stages and cascaded paths. It separates theoretical division loss, documented excess loss, and complete published insertion loss so ideal loss is never counted twice. Optional input power produces an expected equivalent-output level, while stage-by-stage Results, Link Budget handoff, share restoration, CSV, and a branded engineering PDF preserve the complete design basis. The Fiber hub restores the compact multi-column calculator-card layout at 100% desktop zoom while continuing to hide every unfinished calculator.

August 15, 2026

Complete conduit-plan jam-risk handoff

Conduit Fill now transfers an entire completed multi-conduit plan to Conduit Jam Ratio instead of placing the full cable schedule into one conduit. Jam Ratio automatically evaluates every physical run, including unequal cable allocations and mixed conduit sizes, then reports one governing plan result with maximum run fill and the highest published jam-risk classification. Run allocations remain available as supporting verification rather than a quantity the user must choose. Plan-aware share links, CSV and print records, and a complete-plan handoff back to Conduit Fill are included; the existing single-conduit workflow is unchanged.

August 15, 2026

dBm and mW optical power converter

Added the second dedicated fiber calculator as a compact five-step dBm-to-mW and mW-to-dBm workflow. It preserves the exact physical power when direction changes, keeps full precision internally, validates the undefined zero and negative milliwatt boundary, and shows equivalent dBm, milliwatts, watts, and microwatts. Clear guidance distinguishes absolute dBm referenced to 1 mW from a dB ratio. Versioned share links, complete CSV output, a branded engineering PDF, unique search metadata, structured FAQ data, and focused inverse-conversion regression tests are included. The Fiber hub now publishes both completed calculators while tools 3–11 remain hidden until release.

August 15, 2026

Full-page calculator and site layouts

Standardized every calculator as a true one-viewport workbench at 100% browser zoom by including shell padding inside the viewport height, removing remaining desktop margins and width caps, and preserving internal scrolling for long controls and results. All Calculators now expands fluidly as zoom changes. Every destination in Help & site links now uses the same compact calculator-style logo, calculator menu, site-links menu, and sticky full-width header inside a one-viewport page shell. Mobile menus remain inside the screen, all five calculator tabs remain visible, and no calculation logic, defaults, formulas, results, exports, or handoffs changed.

August 15, 2026

Fiber Optic Link Budget Calculator

Added the first dedicated fiber calculator as a compact five-step workbench for defining the fiber run, counting connections, splices, and passive-device loss, entering optional active-equipment specifications, reviewing the governing optical margin, and exporting the plan. The equipment step now maps complete manufacturer ranges: minimum TX governs sensitivity and link margin, while maximum TX separately governs receiver overload. A compact How to use guide, negative-dBm examples, aligned range fields, automatic step scroll reset, and actionable validation make the workflow easier to follow without inventing transceiver defaults. Loss-only projects remain usable in REVIEW. A final calculation audit now rejects zero operating margin and blank required loss/reserve fields while allowing a positive margin that exactly satisfies the selected reserve. Versioned share links, complete CSV output, and a branded one-page engineering report provide the design basis, governing calculations, receiver checks, result interpretation, formulas, and verification notes. The Fiber hub now publishes only completed and verified calculators while retaining unreleased tool definitions for staged development. Focused calculation regressions, unique metadata, FAQ and WebApplication structured data, and direct Fiber hub navigation are included.

August 14, 2026

Fiber optic calculator foundation

Added a dedicated, crawlable Fiber Optic Calculators hub led by Optical Link Budget. The compact viewport workspace uses the same shared header and responsive page width as the calculators, while keyboard-accessible panels keep released calculators, references, and FAQ available without a long page scroll. Only completed and verified fiber calculators are shown publicly; planned tools remain staged for one-at-a-time release. Existing conduit and pathway calculators are intentionally excluded from the Fiber page. The hub also introduces a tested shared model for OM/OS fiber classes, common wavelengths, and clearly labeled FOA / NECA loss-budget planning profiles.

August 10, 2026

Clearer pull-box sizing and mobile workbenches

Communications and fiber pull-box planning no longer presents a silent 8 × 8 × 4 default as though conduit trade sizes calculated it. Cable modes now ask for an intentional proposed inside box, explain that the conduit sizes document openings rather than determine the enclosure, and retain the optional manufacturer bend-envelope check. Power mode continues to calculate NEC 314.28 dimensions from the entered conduit layout. Cable Tray Fill Results now scroll internally on phone-size screens in both Summary and Tray view. All standardized five-step workbenches expose Steps 1–5 simultaneously on phones instead of hiding Results and Export beyond an unmarked horizontal scroll. The shared 4-inch-versus-four-2-inch EMT article teaser is visible in calculator headers on larger screens and intentionally hidden on phones to preserve working space.

August 10, 2026

Power, low-voltage, and fiber pull-box planning

Redesigned the Pull Box Size Calculator so the normal workflow is simply Add conduit, choose where it enters the enclosure, and choose the trade size. Asymmetric layouts no longer require duplicate entries or row setup, and Back is a supported entry surface for conduits passing through the mounting wall. Power mode preserves the NEC 314.28 calculation while making the largest 4 AWG–2000 kcmil Back-entry conductor an optional depth-check enhancement: omitted data keeps the plan exportable as REVIEW, partial data is clearly provisional, and no hidden conductor size is assumed. Communications / low-voltage and Fiber-optic modes begin with the same easy quick-planning REVIEW; a collapsed optional group adds actual cable or bundle diameter plus manufacturer installation and installed bend radii when a conservative bend-envelope check is wanted. Diagrams, conditional CSV/PDF content, and version 4 share links preserve the selected application and optional verification inputs while retaining older power-calculation links.

August 10, 2026

Conduit calculator release-readiness pass

Completed a calculator-by-calculator review of Conduit Fill, Conduit Size, Conduit Cable Capacity, Conduit Jam Ratio, Offset and Rolling Offset, 3-Point Saddle, 4-Point Saddle, and 90° Stub-Up. The pass corrected complete project-aware share restoration, physical unit conversion, invalid and boundary recovery, governing recommendations and handoffs, result-first ordering, full CSV records, mobile tab/menu overflow, and PDF page splitting. Saddle stock checks now reach the farthest mark from START and withhold instructions for impossible negative marks; Stub-Up preserves validated bender-preset context and checks available stock against the finished dimension; Conduit Size reports the actual recommended design; Capacity safely handles oversized custom cable; and Jam Ratio keeps conduit fill as the governing quantity decision while preserving the separate diameter-risk classification. Every final PDF was rendered and visually inspected. The How to Use page now teaches the shared five-step workflow before asking visitors to choose a calculator.

August 9, 2026

Focused electrical sizing workflows

Redesigned Wire Ampacity, Equipment Grounding Conductor, Voltage Drop, and Branch Circuit Wire Size as full-page five-step workbenches. Each calculator now separates setup decisions into task-specific steps, keeps the live decision visible on desktop, provides a dedicated Results view, and moves PDF, CSV, and share controls into Step 5. A release-readiness pass added dynamic step headings, roving keyboard focus, visible invalid Results states, guarded PDF/CSV actions, project-aware share restoration, fuller calculation CSVs, and expanded boundary regression coverage. Branch Circuit keeps Load, Installation, and Protection correctly grouped in AC and DC modes; Voltage Drop safely handles invalid feeder/branch inputs and leads Results with the governing coordination decision; Equipment Grounding requires explicit protective-device confirmation on coordinated handoffs and transfers separate phase and ground rows to Conduit Size. Electrical PDF reports include compact input and calculated-decision summaries followed by the applicable formulas, comparisons, and verification notes; the coordinated Branch Circuit report fits on one page.

August 9, 2026

Focused Cable Tray Fill workflow

Redesigned Cable Tray Fill as a five-step full-page workbench for choosing a tray, entering cable groups, setting the fill method and installation allowance, reviewing capacity and the calculated tray cross-section, and exporting the plan. Results use a compact decision panel beside a large tray view on desktop and dedicated Summary/Tray view subtabs on mobile. A release-readiness pass added imperial and metric display, explicit PASS/REVISE decisions, governing area and side-by-side formulas, missing-area or missing-width reporting, an available-tray action, safe project-aware share restoration, fuller dual-unit CSV records, guarded invalid exports, and two-page reports with intact decision boxes. PDF, CSV, and share controls live in Step 5.

August 9, 2026

Focused Pull Box Size workflow

Redesigned Pull Box Size as a five-step full-page workbench for choosing units, entering paired conduit runs, checking proposed usable-inside dimensions, reviewing governing straight/angle/U-pull requirements, and exporting the report or diagram. A release-readiness pass added unit-correct proposed-box entry, consistent invalid recovery and guarded exports, an early apply-calculated-dimensions action, safe project-aware share restoration, complete governing and paired-spacing CSV records, zoom-resistant tabs, and a compact report with Results before an intact diagram page. Step 5 contains PDF, CSV, SVG, PNG, and share controls.

August 9, 2026

Guided 90° Conduit Stub-Up workflow

Redesigned the Stub-Up calculator as a five-step full-page workbench for selecting conduit, entering finished height, confirming exact bender take-up, reviewing the arrow-mark formula and field sequence, and exporting a worksheet. Beginner instructions identify the STUB END, arrow reference, hook and handle orientation, 90-degree target, springback check, and finished-height verification while preserving the calculated diagram and optional verified presets.

August 9, 2026

Streamlined 3-Point and 4-Point Saddle workflows

Redesigned both conduit saddle calculators as five-step workbenches for choosing the conduit, entering obstruction geometry, checking available field space, reviewing calculated marks and formulas, and exporting a worksheet. Separate beginner-friendly field sequences identify START, explain the physical mark order versus bending order, name the center rim/notch or arrow reference, show bend direction and conduit rotation, and preserve the calculated saddle diagrams.

August 9, 2026

Results and recommendations now come first

Reordered the detailed Results tabs in the migrated conduit calculators so the primary answer and actions such as Use recommended size or Use this conduit plan appear before large conduit and bending illustrations. The calculated SVG and proportional cross-section visuals remain available immediately below the decision content and continue to appear in reports.

August 9, 2026

Streamlined Offset and Rolling Offset workflow

Redesigned the combined conduit offset calculator as a five-step, viewport-height workbench for choosing standard or rolling mode, entering geometry, checking available field space, reviewing the calculated diagram and marking sequence, and exporting a worksheet. The field overlay now gives beginners a direct seven-step sequence from choosing the starting end through marking, bending, rotating, and verifying the finished conduit, while retaining calculated spacing, rolling-plane rotation, formulas, and tool-specific limitations. Printed instruction cards now stay intact across PDF page boundaries.

August 9, 2026

Focused Conduit Jam Ratio workflow

Redesigned Conduit Jam Ratio as a five-step, viewport-height workbench for selecting the conduit, choosing one repeated round cable, checking quantity and published jamming-risk bands, reviewing the proportional pull cross-section and detailed calculations, and exporting the report. The workflow keeps diameter-based jamming risk separate from quantity-based conduit fill, while PDF and CSV exports include project context, formula, fill limits, risk classification, and field-verification guidance.

August 8, 2026

Faster Conduit Cable Capacity workflow

Redesigned Conduit Cable Capacity as a five-step, viewport-height workbench for selecting a conduit, choosing one repeated cable, setting the fill criterion, reviewing maximum whole-cable capacity, and exporting the report. The detailed result retains the proportional bundle and same-material size comparison, while PDF and CSV exports now include project context and maximum-load formulas.

August 8, 2026

Purpose-built Conduit Fill and Conduit Size workspaces

Redesigned both calculators as fluid, viewport-height, five-step workbenches. Conduit Fill starts with a selected conduit; Conduit Size starts with the cable load and treats raceway type and maximum size as project limits before presenting a recommendation. Live sizing results identify the quantity and size of every recommended conduit group. A dedicated Export step provides PDF and CSV reports with detailed engineering results and formulas, compact unbroken conduit drawings, and planned-fill metrics. Proportional cross-sections use an illustrative loosely settled bundle and a separate fill gauge, while compact navigation preserves crawlable site links.

August 5, 2026

Automatic ground wire allowance for conduit fill

Added an electrical-only option in Conduit Fill and Conduit Size to calculate one supported wire-type equipment grounding conductor from the confirmed protective-device and phase-conductor inputs, require an exact published product diameter, and include its physical area in fill and conduit-size recommendations. Telecommunications and data projects are unchanged.

August 5, 2026

Interactive conduit-bending instructions

Added collapsible, input-responsive marking and bending sequences for standard offsets, rolling offsets, three-point saddles, and four-point saddles. The overlays identify the starting end, numbered bend order, bender reference symbol, handle and bend direction, rolling-plane rotation, calculated spacing and shrink, and model-specific verification limits while preserving the calculated field diagrams.

August 5, 2026

Proportional conduit cross-section previews

Added interactive SVG cross-sections to Conduit Fill, Conduit Size, Conduit Cable Capacity, and Conduit Jam Ratio. The previews draw conduit and cable diameters proportionally, distinguish mixed cable groups, show multi-conduit distribution, report exact or representative symbol counts, and clearly separate illustrative packing from the governing calculations.

August 2, 2026

Branch Circuit Wire Size Calculator

Added a guided common-circuit workflow that coordinates the existing ampacity, voltage-drop, and equipment-grounding engines, checks a user-confirmed protective device, produces branded PDF/CSV reports and share links, and transfers the final circuit conductors plus EGC to Conduit Size for exact product selection.

August 1, 2026

Clearer calculator names and search terminology

Standardized calculator names around familiar trade and search language, including Wire Ampacity, Conduit Cable Capacity, Conduit Jam Ratio, Offset and Rolling Offset, 3-Point and 4-Point Saddle Bend, and 90° Conduit Stub-Up. Existing URLs remain unchanged.

August 1, 2026

Equipment Grounding Conductor Calculator

Added a scoped 2023 NEC reference workflow for wire-type EGC sizing through 600 A, proportional circular-mil adjustment when phase conductors are increased, branded PDF/CSV reports, shareable project links, and separate phase-plus-EGC handoffs to Conduit Fill and Conduit Size.

August 1, 2026

Wire Ampacity Calculator

Added a transparent 2023 NEC reference workflow for Table 310.16 ampacity, Celsius/Fahrenheit ambient-temperature input, current-carrying-conductor adjustment, terminal limitations, continuous and noncontinuous load comparison, automatic minimum-size and nearby-size comparison with local selected-size details, small-conductor planning limits, branded CSV/PDF output, shareable links, and Voltage Drop handoff.

August 1, 2026

Expanded and organized electrical conductor library

Expanded the electrical-power library to 128 verified products from Southwire, Encore Wire, and Cerrowire, including separately published solid 14, 12, and 10 AWG copper THHN/THWN-2 options. Electrical-only filters now narrow material, insulation, solid or stranded construction, manufacturer, and conductor size.

August 1, 2026

Electrical power conductor library

Added the shared electrical-power category with the initial 59 verified Southwire copper SIMpull THHN/THWN-2 and copper or aluminum XHHW-2/RW90 conductor options from 14 AWG through 1000 kcmil where published. The library supports Conduit Fill, Conduit Size, Conduit Cable Capacity, Conduit Jam Ratio, custom handoffs, and conductor-size handoff to Voltage Drop.

August 1, 2026

Calculator-to-calculator handoffs

Added optional workflow links that transfer compatible conduit, cable, quantity, and fill inputs between Conduit Fill, Conduit Size, Conduit Cable Capacity, and Conduit Jam Ratio without removing or combining the individual calculators.

July 31, 2026

Expanded conduit bending suite

Added three-bend saddle, four-bend saddle, and 90-degree stub-up calculators with unified inputs, responsive diagrams, field marks, available-length checks, manufacturer-neutral custom values, verified optional presets, reports, documentation, structured data, and sitemap coverage.

July 31, 2026

Conduit Offset and Rolling Offset Calculator

Added standard and rolling-offset geometry with imperial and metric inputs, bend multipliers, ideal centerline travel, horizontal run, theoretical shrink, rolling rotation, responsive diagrams, branded reports, CSV export, shareable links, formulas, and field-verification guidance.

July 30, 2026

Quantity-sensitive Conduit Jam Ratio results

Added conduit-fill validation and maximum identical-cable capacity to the Conduit Jam Ratio Calculator. Cable quantity now drives a governing Does not fit result while the report separately explains why the diameter-based jam ratio itself remains unchanged.

July 30, 2026

Scalable calculator navigation

Grouped the calculator menu by purpose, added a prominent All Calculators route and a height-limited mobile-friendly menu, replaced the growing flat footer with organized information groups, and added contextual related-calculator links.

July 30, 2026

Unified custom cable selection

Added a visible Custom / user-entered choice to every cable-manufacturer selector while retaining Custom round cable in every product selector. Either choice now opens the same custom name and outside-diameter workflow.

July 30, 2026

Conduit Jam Ratio Calculator

Added identical-cable jamming-risk screening with shared conduit and cable libraries, custom cable diameter entry, a proportional conduit cross-section, published risk ranges, branded reports, CSV export, and shareable links.

July 29, 2026

Cable Tray Fill Calculator

Added area-fill and single-layer cable tray planning, optional installation allowances, multiple cable groups, generic dimensions, and manufacturer presets for Eaton B-Line, Legrand Cablofil, nVent HOFFMAN, Hubbell, and Snake Tray. Includes tray-width recommendations, proportional diagrams, branded reports, CSV export, and shareable links.

July 29, 2026

Advanced Voltage Drop Calculator

Added DC two-wire, single-phase AC, and balanced three-phase calculations; feeder-plus-branch segments; amperes, watts, kilowatts, VA, and kVA load entry; conductor comparison; parallel-path and temperature modeling; project report fields; branded reports; CSV export; and shareable links.

July 29, 2026

Branded reports and pull-box diagram exports

Added logo-branded printable reports across all calculators, CSV attribution, pull-box SVG and PNG downloads, dimension lines, standard-enclosure guidance, and shareable pull-box calculation links.

July 28, 2026

Pull Box Size Calculator

Added a four-side conduit-entry calculator for multiple conduit runs, straight, angle, and U pulls; proposed inside length, width, and depth review; governing formulas; and an installation-style conduit layout preview.

July 25, 2026

New conduit-capacity engineering article

Added a mathematical comparison explaining why one 4-inch EMT has more internal and 40%-fill area than four 2-inch EMT conduits.

July 25, 2026

Phase 3 engineering resources

Added NEC and BICSI context pages, dataset-generated conduit fill area tables, a resources hub, and the first engineering article.

July 25, 2026

SEO and site-information foundation

Added About, Contact, and FAQ pages; social-sharing metadata; WebSite and FAQ structured data; and improved internal navigation.

July 25, 2026

Protected support and feature requests

Added a support form with optional reply email, Formspree delivery, and Cloudflare Turnstile protection.

July 24, 2026

Expanded conduit and cable planning

Added multiple conduit families, telecommunications cable products, editable multi-conduit plans, compact cable rows, bend planning, and professional PDF/CSV reports.