| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. CONDUIT INSTALLATION | |||
| A1 | Conduit is properly secured at intervals not exceeding 1.5 m for horizontal runs Acceptance: Support spacing ≤ 1.5 m, no sagging observed | Cl. 7.2.1 — Conduit support spacing | OK NC NA HOLD |
| A2 | Conduit bends have minimum bend radius of 6 times conduit diameter Acceptance: All bends: radius ≥ 6D, no flattening or cracking | Cl. 7.2.2 — Bend radius | OK NC NA HOLD |
| A3 | Conduit is grounded/bonded at both ends and intermediate boxes Acceptance: Earth resistance ≤ 1 Ω measured between boxes | Cl. 8.3.1 — Earth continuity | OK NC NA HOLD |
| A4 | Conduit routing avoids sharp edges; cable glands or sleeves fitted where required Acceptance: All cable entry points protected, no sharp edges, glands fitted | Cl. 7.1.3 — Mechanical protection | OK NC NA HOLD |
| A5 | Conduit fill ratio does not exceed 40% of conduit cross-sectional area Acceptance: Cable bundle diameter ≤ 0.4 × conduit ID | Cl. 7.2.3 — Conduit fill | OK NC NA HOLD |
| A6 | Conduit boxes are accessible and properly sized for number of cables Acceptance: Box volume adequate, all cables accessible, no cramping | Cl. 7.3.1 — Box sizing | OK NC NA HOLD |
| B. CABLE SELECTION & MARKING | |||
| B1 | Cables are IS-marked (ISI mark or equivalent) for voltage and temperature rating Acceptance: ISI mark visible, voltage ≥ rated circuit voltage, temperature rating ≥ ambient + 10°C | Cl. 6.1.1 — Cable certification | OK NC NA HOLD |
| B2 | Cable size is appropriate for load current and is not corroded or damaged Acceptance: Cable area per design, insulation intact, no burn marks or moisture | Cl. 6.3.1 — Cable sizing | OK NC NA HOLD |
| B3 | Each cable is properly labeled at source and distribution points (circuit ID) Acceptance: Labels legible, match circuit drawings, permanent marking used | Cl. 8.1.2 — Cable identification | OK NC NA HOLD |
| B4 | Cable color-coding follows standard (Brown/Red: Phase, Black: Neutral, Green: Earth) Acceptance: All phase, neutral, earth wires correctly identified by color | Cl. 6.2.1 — Color identification | OK NC NA HOLD |
| B5 | Cable insulation resistance tested before energization Acceptance: Megger reading ≥ 1 MΩ, recorded and documented | Cl. 11.1 — Pre-commissioning test | OK NC NA HOLD |
| C. CABLE ROUTING & SPACING | |||
| C1 | Power cables are segregated from control/signal cables by minimum 300 mm Acceptance: Separation distance ≥ 300 mm measured center-to-center | Cl. 7.4.1 — EMI prevention | OK NC NA HOLD |
| C2 | Cables routed away from water sources, high-temperature pipes (min. 300 mm clearance) Acceptance: Minimum 300 mm clearance from pipes/heat sources, above water level in trenches | Cl. 7.1.1 — Environmental protection | OK NC NA HOLD |
| C3 | Cable trays are properly supported and not overloaded Acceptance: Support spacing ≤ 1.5 m, cable bundle weight within tray capacity | Cl. 7.5.2 — Cable tray design | OK NC NA HOLD |
| C4 | Cables are not pinched or under mechanical stress at connection points Acceptance: No visible stress marks, cables lay flat and relaxed at terminations | Cl. 8.2.2 — Termination method | OK NC NA HOLD |
| C5 | Cables in wet areas (bathrooms, kitchens) are routed at height ≥ 1.3 m from floor Acceptance: Minimum height 1.3 m from floor in wet areas, conduit properly sealed | Cl. 7.6.2 — Wet location protection | OK NC NA HOLD |
| C6 | Cable entries at panels/boxes have proper grommet or bushing to prevent abrasion Acceptance: Grommets in place, no exposed edges, cable jacket intact | Cl. 8.2.1 — Cable protection | OK NC NA HOLD |
| C7 | Loose or excess cable is coiled and secured; no kinks or twisted sections Acceptance: Coil radius ≥ 6 × cable diameter, no kinks, secured with cable ties every 0.5 m | Cl. 7.2.4 — Cable storage | OK NC NA HOLD |
| C8 | Conduit/tray routing does not interfere with structural elements or other services Acceptance: No clashing with HVAC, plumbing, or structural members confirmed against drawings | Cl. 7.1.2 — Co-location rules | OK NC NA HOLD |