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Terminal wire size, stud hole, AWG/mm2, and insulation reference calculator. # Electri Terminal Calculator - User Guide ## Overview Electri Terminal Calculator is a Chrome extension for quick terminal selection reference. It helps engineers, buyers, sales support teams, and electrical component users convert and check common terminal-related dimensions directly in the browser. The extension includes: - AWG to mm2 reference lookup - mm2 to AWG and color-code matching - Maximum current reference from the bundled selection table - Stud size and terminal hole-size lookup - Terminal type code lookup - Insulation code lookup - Right-click selected text parsing - One-click copy for engineering reference notes This tool is designed as a fast engineering reference. It does not replace the final product specification sheet, customer application requirements, certification requirements, or engineering approval process. ## Who This Extension Is For Electri Terminal Calculator is useful for: - Electrical engineers checking wire and terminal compatibility - Wire harness engineers matching cable sizes and terminal holes - Purchasing teams reviewing customer requirements - Sales engineers preparing quick replies for RFQs - Industrial component users comparing AWG, mm2, stud size, and hole size values - International customers who need to switch between US and metric notation ## Main Features ### 1. Wire Size Calculator Use the Wire tab to look up AWG and mm2 reference values. Supported examples: - `AWG 10` - `10 AWG` - `8 mm2` - `1/0` - `2.63 mm2` The result may include: - AWG value - Wire size range in mm2 - Terminal color code - Maximum current reference - Notes about the matched range Example: Input: `AWG 10` Result: - AWG: 10 - Wire range: 2.63-6.64 mm2 - Color code: Yellow - Max current: 48 A ### 2. Stud and Hole Size Calculator Use the Stud tab to match stud size and terminal hole size. Supported examples: - `#10` - `M6` - `6 mm` - `1/4"` - `10.5 mm hole` The result may include: - Stud size in inch notation - Stud size in mm - Recommended terminal hole size in mm - Terminal hole size in inch notation Example: Input: `M6` Result: - Stud size: 1/4" - Stud metric: 6.0 mm - Hole metric: 6.4 mm - Hole inch: .252 inch Important note: Stud size means the fastener diameter. Hole size means the terminal tongue opening. Always confirm the final hole size against the product drawing and assembly tolerance. ### 3. Terminal Type Lookup Use the Type tab to search terminal family names or model codes. Supported examples: - `ring` - `spade` - `FD` - `butt` The result may include: - Terminal type - Code - Insulation code reference - Wire size reference - Size reference - Tongue width reference Example: Input: `ring` Result: - Ring Terminals - Code: R - Insulation reference: NYD - Wire reference: 1.25 - Tongue reference: 3.7 ### 4. Insulation Code Lookup Use the Insulation tab to search insulation code, material, or crimp structure. Supported examples: - `NY` - `NYD` - `D` - `vinyl` - `nylon` The result may include: - Insulation code - Crimp type - Material - Temperature rating - Usage note Example: Input: `NY` Result: - Code: NY - Crimp type: Nylon Insulated - Single Crimp - Material: Nylon - Temperature rating: 105 C ### 5. Right-Click Text Parsing You can select terminal-related text on a webpage and send it to the extension. How to use: 1. Highlight text on any webpage. 2. Right-click the selected text. 3. Choose `Calculate with Electri Terminal`. 4. The extension will parse recognized wire, stud, terminal, or insulation values. Example selected text: `M6 ring terminal for 10 AWG cable` Possible results: - AWG 10 wire reference - M6 / 1/4" stud reference - Ring terminal type reference The extension only processes text that you actively select. ### 6. One-Click Copy Each result card includes a Copy button. Use it to copy a clean engineering reference sentence for emails, RFQs, BOM notes, or internal comments. Example copied text: `Reference selection: AWG 10, 2.63-6.64 mm2, Yellow color code, max current 48 A. Confirm terminal form, insulation code, and product specification before final selection.` ## How To Install From The Chrome Web Store After the extension is published on the Chrome Web Store: 1. Open the Electri Terminal Calculator listing in the Chrome Web Store. 2. Click `Add to Chrome`. 3. Review the permission prompt. 4. Click `Add extension`. 5. After installation, click the puzzle icon in the Chrome toolbar. 6. Find `Electri Terminal Calculator`. 7. Click the pin icon if you want the extension to stay visible in the toolbar. 8. Click the extension icon to open the calculator. ## How To Install For Local Testing Use these steps only if you are testing the unpacked extension before Chrome Web Store publication. 1. Open Chrome. 2. Go to `chrome://extensions`. 3. Turn on `Developer mode`. 4. Click `Load unpacked`. 5. Select the extension folder. 6. Confirm that `Electri Terminal Calculator` appears in the extension list. 7. Click the extension icon to open the popup. If you change extension files during testing, return to `chrome://extensions` and click the reload button for the extension. ## How To Use The Extension ### Step 1: Open The Extension Click the Electri Terminal Calculator icon in the Chrome toolbar. The popup opens with four tabs: - Wire - Stud - Type - Insulation ### Step 2: Choose A Mode Choose the tab that matches your task: - Use Wire for AWG, mm2, color code, and current reference. - Use Stud for screw, bolt, stud, and hole size reference. - Use Type for terminal family and code lookup. - Use Insulation for insulation material and crimp structure lookup. ### Step 3: Enter A Value Type a value into the input field. You can also click one of the example chips shown under the input. Examples: - `AWG 10` - `8 mm2` - `#10` - `M6` - `ring` - `NYD` ### Step 4: Review The Result The extension will show one or more matching reference cards. If more than one result appears, review each candidate and select the one that matches your application. ### Step 5: Copy The Result Click `Copy` on a result card to copy a reference sentence. Paste it into your email, RFQ response, BOM note, or engineering discussion. ### Step 6: Confirm Final Selection Use the extension as a reference tool. Final selection should always be confirmed against: - Product specification sheet - Product drawing - Wire type and stranding - Application current - Insulation requirement - Assembly tolerance - Certification or customer standard ## Data Source The bundled reference data follows the Electri Terminal selection guide: https://electriterminal.com/selection-guide The extension includes local reference tables so the main calculator can work quickly without loading the guide page every time. ## Supported Reference Tables ### Wire Range Reference The Wire calculator uses stable selection-guide intervals up to 60.57 mm2. Large-conductor tail ranges above the stable table are not treated as final automatic matches. If a value is outside the bundled stable range, the extension displays an out-of-range notice and recommends checking the product specification sheet. ### Stud and Hole Reference The Stud calculator uses a lookup table for common stud and terminal hole sizes. It prioritizes the bundled reference table over pure formula conversion because terminal hole sizes include practical clearance. ### Terminal Type Reference The Type lookup provides quick access to common terminal families and model codes such as: - Ring Terminals / R - Spade Terminals / S - Hook Terminals / H - Blade Terminals / DB - Pin Terminals / PT - Female Disconnects / FD - Butt Connectors / B - Cord End Terminals / E ### Insulation Reference The Insulation lookup includes common insulation and crimp structures such as: - NY: Nylon Insulated - Single Crimp - D: Vinyl Insulated - Double Crimp - V: Vinyl Insulated - Single Crimp - NB: Non-Insulated with Brazed Seam - NYD: Nylon Insulated - Double Crimp ## Permissions Explained Electri Terminal Calculator uses a small set of Chrome extension permissions. ### activeTab Used only when the user actively interacts with the extension or selected text. The extension does not continuously read browser tabs. ### contextMenus Used to add the right-click menu item: `Calculate with Electri Terminal` This lets users send selected webpage text to the calculator. ### storage Used to remember local extension state, such as the most recent query, selected mode, or pending selected text from the context menu. ### clipboardWrite Used for the Copy button so users can copy calculation results. ## Privacy Electri Terminal Calculator is designed as a local reference tool. - It does not require account login. - It does not upload user input to a server. - It does not collect browsing history. - It does not read entire webpages by default. - It only processes selected text when the user chooses the right-click menu action. - Calculator data is bundled with the extension for quick local use. If future versions add optional analytics or remote data updates, those changes should be disclosed clearly before release. ## Limitations This extension provides engineering reference values, not final product approval. Users should not rely on the extension as the sole source for final product selection. Always check the relevant product specification sheet, product drawing, application current, insulation requirements, wire construction, crimp tooling, and customer standards. Known scope limits: - It does not provide final SKU recommendations. - It does not check stock, price, or lead time. - It does not verify certification compatibility. - It does not replace datasheets or engineering approval. - It does not automatically validate complete assembly conditions. ## Troubleshooting ### The extension icon is not visible 1. Click the puzzle icon in the Chrome toolbar. 2. Find `Electri Terminal Calculator`. 3. Click the pin icon. ### The popup does not show a result Try a clearer input format: - Use `AWG 10` instead of only `10` if you mean AWG. - Use `8 mm2` if you mean metric wire size. - Use `M6`, `#10`, or `10.5 mm hole` for stud and hole lookup. - Use `NYD`, `ring`, or `FD` for type and insulation lookup. ### More than one result appears Some references overlap by design. For example, a boundary wire-size value may match more than one range. Review the result notes and confirm final selection against the product specification sheet. ### Right-click parsing does not show the expected result Make sure the selected text includes a recognizable value, such as: - `AWG 10` - `10 AWG` - `M6` - `#10` - `ring terminal` - `NYD` If the text is complex, open the extension and enter the value directly. ### The Copy button does not work Check that Chrome has allowed the extension to write to the clipboard. If needed, reload the extension or restart Chrome. ## Frequently Asked Questions ### Is this a final product selector? No. It is a quick engineering reference calculator. Final selection should be confirmed against product specifications and application requirements. ### Does it work offline? The main calculator uses bundled data and can work without loading the Electri Terminal website. Links to the guide, search page, and RFQ page require internet access. ### Can I use only wire size to choose a terminal? No. Wire size is only one factor. You should also confirm terminal form, insulation type, stud or hole size, current rating, crimp tooling, and final product specifications. ### What is the difference between stud size and hole size? Stud size is the fastener diameter. Hole size is the opening on the terminal tongue. The hole is usually slightly larger than the stud to allow assembly clearance. ### Why are some large conductor sizes not matched automatically? The bundled stable wire range table is limited to the reviewed selection-guide intervals. Large-conductor tail ranges should be confirmed manually against the product specification sheet. ### Does the extension collect my selected text? No. The extension processes selected text locally when the user chooses the right-click action. It does not upload the selected text to a server. ## Store Listing Text The following text can be used or adapted for the Chrome Web Store listing. ### Short Description Terminal wire size, AWG/mm2, stud hole, terminal type, and insulation reference calculator for Chrome. ### Detailed Description Electri Terminal Calculator helps engineers, buyers, and sales support teams quickly check terminal selection reference values inside Chrome. Use it to look up AWG/mm2 wire ranges, terminal color codes, max current references, stud and hole sizes, terminal type codes, and insulation codes. You can also select text on a webpage, right-click, and send recognized values to the calculator. Key features: - AWG and mm2 wire-size reference - Color-code and max current lookup - Stud size and terminal hole-size lookup - Terminal family and model code lookup - Insulation material and crimp type lookup - Right-click selected text parsing - One-click copy for RFQs, emails, and BOM notes - Local bundled reference data This extension is intended as an engineering reference tool. Final terminal selection should always be confirmed against the product specification sheet, product drawing, customer requirement, application current, insulation requirement, and assembly tolerance. ### Support Text For support or product questions, visit: https://electriterminal.com/contact For the full selection guide, visit: https://electriterminal.com/selection-guide ## 中文说明 Electri Terminal Calculator 是一款用于端子选型参考的 Chrome 插件。用户可以在浏览器中快速查询 AWG/mm2、端子颜色线径范围、最大电流参考、螺柱尺寸、端子孔径、端子类型代码和绝缘代码。 ### 安装方式 从 Chrome 插件商店安装： 1. 打开 Electri Terminal Calculator 的 Chrome Web Store 页面。 2. 点击 `Add to Chrome`。 3. 查看权限提示。 4. 点击 `Add extension`。 5. 安装完成后，点击浏览器工具栏中的拼图图标。 6. 找到 Electri Terminal Calculator。 7. 点击固定图标，把插件固定到工具栏。 8. 点击插件图标即可打开计算器。 本地测试安装： 1. 打开 Chrome。 2. 访问 `chrome://extensions`。 3. 开启 `Developer mode`。 4. 点击 `Load unpacked`。 5. 选择插件文件夹。 6. 在工具栏打开插件进行测试。 ### 使用方式 插件包含四个模式： - Wire：查询 AWG、mm2、颜色代码和电流参考。 - Stud：查询螺柱尺寸和端子孔径。 - Type：查询端子类型和代码。 - Insulation：查询绝缘代码、材料和压接结构。 常见输入示例： - `AWG 10` - `10 AWG` - `8 mm2` - `M6` - `#10` - `10.5 mm hole` - `ring` - `NYD` 每个结果卡片都有 `Copy` 按钮，用户可以复制标准化的工程参考说明，用于邮件、报价、BOM 备注或内部沟通。 ### 右键菜单 用户可以在任意网页中选中文本，然后右键点击 `Calculate with Electri Terminal`。插件会尝试识别选中文本中的线径、螺柱、端子类型或绝缘代码。 示例： `M6 ring terminal for 10 AWG cable` 可能识别出： - AWG 10 线径参考 - M6 / 1/4" 螺柱参考 - Ring Terminal 端子类型参考 ### 权限说明 - `activeTab`：仅在用户主动操作插件或选中文本时使用。 - `contextMenus`：用于添加右键菜单。 - `storage`：用于保存最近查询、当前模式或待解析的选中文本。 - `clipboardWrite`：用于复制结果。 ### 隐私说明 插件不需要登录，不上传用户输入，不收集浏览历史，不默认读取整个网页。只有当用户主动选择网页文本并点击右键菜单时，插件才会在本地处理该文本。 ### 重要提醒 本插件仅用于工程参考，不替代最终规格书。最终选型必须结合产品规格书、产品图纸、线材类型、应用电流、绝缘要求、压接工具、装配公差和客户标准进行确认。