Junction box (Ex e)

Increased-safety field junction box in 316 stainless or GRP on a galvanised UPN floor stand. Hollow body with mounting plate, DIN-rail terminals, trunking and cable cores (shown with open); gasketed lid with captive screws and hinges, Ex marking and warning label, breather drain, external earth stud and tag plate. A bottom gland plate carries a row of cable glands with shrouds; the cables drop and run out along a deck-level ladder tray. Size sets the enclosure and the stand (one or two legs).

Installation

Copies electrical/junction-box.tsx and the shared lib/ into src/components/deck-twin/. Needs three, @react-three/fiber and @react-three/drei. See installation for the manual route.

Usage

import { Canvas } from '@react-three/fiber'
import { OrbitControls } from '@react-three/drei'
import { Stage } from './components/deck-twin/lib/stage'
import { JunctionBox } from './components/deck-twin/electrical/junction-box'

export default function Scene() {
  return (
    <Canvas shadows camera={{ position: [8, 5, 9], fov: 35 }}>
      <Stage>
        <JunctionBox />
      </Stage>
      <OrbitControls makeDefault />
    </Canvas>
  )
}

Props

P&ID

Small square or rectangle labelled JB plus its number, with field cables entering from the bottom and a multicore leaving towards the control room.

tag JBtag JBEtag JBIInstrument / electrical layout convention

Appears on instrument location plans, cable block diagrams and electrical layouts, not on P&IDs. An LCS is a similar small box at a motor with push-buttons.

Junction box datasheet (IEC 60079-7 / IEC 60529) fields and the props they set

Sizesize

Enclosure materialenclosure

Number of cable glandsglands

Tag numbertag

Typical suppliers

R. STAHL. The geometry is generic and sized from public standards. It is not vendor CAD.

For agents

Machine-readable entry with props, ranges, defaults and ports:

Or fetch /r/junction-box.json, or copy a ready-made instruction:

Add the Deck Twin "Junction box (Ex e)" component to this project. Run `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add junction-box` (it copies the file and the shared lib into src/components/deck-twin/), then `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz info junction-box` for its props, ranges and ports. Render <JunctionBox /> inside a React Three Fiber <Canvas shadows>, wrapped in <Stage> from src/components/deck-twin/lib/stage. Set props from my data (metres, NPS in inches, ASME class) and leave the rest at defaults. Install three, @react-three/fiber, @react-three/drei and @types/three if they're missing. Full guide: https://decktwin.com/skill/SKILL.md