The contrast between high-density and spaced-out cable pulling is driven by cable management overhead versus physical distance effort. High-Density Environments (Large Projects / Data Centers) Typical Rate: 0.4 - 0.6 Man-Hours per Meter (MH/m) Characteristics: • Short physical pulls but extreme sorting and management labor • High conduit/tray fill ratios (40-50%+) increase friction and pulling tension • Labor consumed by tagging, organizing, maintaining airflow/separation • Premium on space—often requiring very small form factor connectors Spaced-Out Pulling (Small Projects / Pumping Stations) Typical Rate: 0.15 - 0.25 MH/m Characteristics: • Long linear runs with few cables • Primary labor driver is physical distance and setup time • Single 200m pull much faster per meter than ten 20m pulls in congested rack • Productivity heavily dependent on having tugger/winch vs. manual pulling

The ratio of termination hours to cable pull hours is dramatically different between project types due to technical friction and regulatory overhead. Comparison: LARGE OIL & GAS PROJECTS • Typical Ratio: 0.3:1 to 1.5:1 (termination to laying) • Gland Type: Mix of Standard Industrial Glands and High-complexity Barrier Glands (Ex d) • Point Density: High (large number of multi-core) • Inspection: 100% CompEx/Third-Party certified • Prep Time: Over 30 min per cable end SMALL SIMPLE PROJECTS • Typical Ratio: 0.1:1 to 0.2:1 • Gland Type: Standard Industrial • Point Density: Low (direct runs) • Inspection: Standard sign-off • Prep Time: 15-20 min per cable end Key Reasons for Low Ratio in Small Projects: Simplified Hardware • No explosion-proof containment requirements • Skip time-consuming epoxy sealing and cure times • Standard industrial terminations vs. barrier glands Pulling Dominance • Remote sites: Physical distance is primary labor driver • Example: 6 hours (30 MH) pulling 500m cable, 30 minutes (0.5 MH) terminating • Creates ratio of ~0.016 Pre-terminated Systems • Increasing use of plug-and-play connectors (M12, M23) • Shifts termination from field to factory • Reduces on-site termination labor to near zero Lower Compliance Overhead • Large O&G: Rigorous loop checking and SIS validation for every termination • Small projects: Basic continuity and insulation resistance tests only Labor Structure • Large projects: Separate specialized termination crews (more staging overhead) • Small projects: Pulling crew terminates themselves (less formal staging)

Yes—smaller, simpler electrical projects routinely achieve productivity significantly better than USGC baseline. Like piping, this efficiency gain comes from two distinct factors that often work together but should be understood separately. Factor 1: Physical Simplicity of Electrical Layouts (Independent of Contractor Size) Simple electrical layouts with single-level cable routing and spaced equipment fundamentally reduce installation complexity, regardless of who's doing the work. Key Physical Advantages: Single-Level Cable Tray Systems: • Direct cable laying from ground level or simple platforms • No multi-tier tray stacks requiring ladders or scaffolding • Pull cables horizontally without vertical lifts between levels • Clear visibility of entire cable run • Typical productivity: 0.60 to 0.75× USGC (25-40% faster) Spaced Equipment Layouts: • Adequate clearance between motor control centers, panels, and field devices • Easy access for cable routing and termination • Room to stage cable reels adjacent to work • No congested marshalling cabinets with hundreds of terminations • Simple point-to-point runs vs. complex multi-drop circuits Direct Installation Benefits: • Simple cable pulls: Lay cable directly in open trays without threading through congested areas • No complex cable management or separation requirements • Minimal bending radius constraints • Fewer support brackets and hangers needed • Straightforward terminations at accessible heights Simple Termination Points: • Equipment at ground level or easily accessible platforms • Standard industrial enclosures (not explosion-proof) • Clear access to terminal blocks and connection points • No high-density marshalling requiring cable sorting Comparison to Complex Projects: SIMPLE ELECTRICAL PROJECT • Tray Configuration: Single level, ground accessible • Cable Installation: Direct laying in open trays • Termination Access: Equipment at grade, clear access • Cable Management: Minimal sorting, direct routes • Productivity Factor: 0.60-0.75× USGC • Efficiency Difference: 40% FASTER COMPLEX MULTI-LEVEL PROJECT • Tray Configuration: 3-4 levels stacked, congested • Cable Installation: Thread through congestion, vertical lifts • Termination Access: High-density cabinets, elevated gear • Cable Management: Extensive tagging, separation rules • Productivity Factor: 1.25-1.50× USGC • Efficiency Difference: 50% SLOWER This physical simplicity advantage applies regardless of contractor size. A large electrical contractor working on a simple pumping station with single-level trays achieves the same installation efficiency as a small contractor—the work itself is just physically easier and faster. Factor 2: Smaller Electrical Contractor Organizational Efficiency Beyond physical simplicity, smaller electrical contractors often operate more efficiently due to lower overhead and streamlined operations. This is a separate productivity advantage that compounds with simple layouts. Why Smaller Electrical Contractors Can Be More Efficient: Minimal Overhead: • No project engineers or multiple layers of supervision • Master electrician often works directly with crew • Minimal administrative burden (timesheets, safety meetings, reporting) • No corporate compliance overhead • Direct communication between field and decision-makers Crew Efficiency: • Small crews (2-6 electricians) with established working relationships • Less time spent on coordination meetings and paperwork • Quick mobilization (van-based vs. trailer setups) • Local crews familiar with suppliers and inspection processes Financial Motivation: • Direct financial stake in completing work efficiently • Local reputation drives repeat business • Pride in workmanship on visible community projects • Incentive to maintain good relationships with local inspectors Operational Flexibility: • Can modify approach based on field conditions without approvals • Respond immediately to material availability (substitute approved equivalents) • Adjust crew size day-to-day based on actual needs • Less rigid adherence to corporate procedures when field conditions warrant Procurement Efficiency: • Direct relationships with local supply houses • Can pick up materials same-day vs. waiting for corporate purchasing • Better pricing on small quantities from established relationships • Ability to return unused materials easily Typical Productivity: 0.85 to 0.95× USGC (5-15% faster than baseline) Note: This advantage is separate from physical simplicity. It represents pure organizational efficiency. Combined Effect: When both factors align—physically simple electrical work executed by efficient smaller contractors—the productivity gains multiply: Combined Productivity: • 0.55 to 0.7× USGC (30-45% faster than baseline) When USGC Baseline Is Still Appropriate for Electrical Work Use standard USGC (factor of 1.0) even on smaller electrical projects when: • Unknown contractor without local track record • Hazardous area classifications (Zone 1/Div 1 or Zone 0) • Medium or high voltage work requiring specialized certifications • Complex control systems or instrumentation loops • First-time crew or new team composition • Brownfield work in operating facilities • High-density data center or DCS room installations

Onshore Refineries (2026 Benchmarks): CONTROL/INSTRUMENT CABLES • Laying: 0.20-0.35 MH/m • Termination: 0.8-1.5 MH/end • Ratio (Term:Lay): 1:1.5 to 1:2.5 LV POWER (SMALL) • Laying: 0.15-0.25 MH/m • Termination: 0.5-1.0 MH/end • Ratio (Term:Lay): 1:3 to 1:4 MV/HV POWER • Laying: 0.50-0.85 MH/m • Termination: 4.0-8.0 MH/end • Ratio (Term:Lay): 1:1 to 1:1.5 Note: Ratios based on average run lengths of 50-100 meters. Shorter runs increase the termination-to-laying ratio. Key Productivity Drivers: Installation Method • Conduit: 20-30% more labor than open cable trays (friction, threading difficulty) Refinery Complexity • "Live" or brownfield areas: 15-40% labor penalty • Permit requirements, restricted access, safety stand-downs High-Voltage Specialization • MV/HV (11kV, 33kV): Requires certified jointers, specialized testing • Termination phase nearly equals laying phase in total effort Elevation Factors • 10% productivity decrease per 2 meters above 3 meters height • Working from scaffolding or lifts

Hazardous Area Classifications significantly alter both laying and termination labor through increased safety overhead and technical complexity. Hazardous Area Labor Multipliers: NON-HAZARDOUS • Laying Multiplier: 1.00 • Termination Multiplier: 1.00 • Impact: Standard areas ZONE 2 / DIV 2 • Laying Multiplier: 1.15-1.25 • Termination Multiplier: 1.20-1.35 • Impact: Permit time, good labor practice ZONE 1 / DIV 1 • Laying Multiplier: 1.35-1.50 • Termination Multiplier: 1.50-1.75 • Impact: Ex d or IS fittings required ZONE 0 • Laying Multiplier: 1.60-2.00 • Termination Multiplier: 2.00-2.50 • Impact: Highly restrictive, IS barriers, gas monitoring Impact on Termination-to-Laying Ratio: Standard (Non-Hazardous): 1:3 ratio (1 hour termination per 3 hours laying) Zone 1/Div 1: 1:1.5 to 1:2 ratio Why? Barrier glands and certified seals can double termination hours while laying becomes only moderately harder. Mandatory Requirements: Sealing & Glanding • Zone 1/Div 1: Certified barrier glands required if cable not gas-tight • Adds 30-45 minutes per cable end Intrinsic Safety (IS) • Zone 0: Requires galvanic isolators or zener barriers in control room • Adds "hidden" termination hours Inspection • 100% of hazardous area terminations inspected by CompEx-certified technician • Adds dedicated inspection hour category Environmental & Safety Penalties: PPE Requirements • Zone 1: Full FR clothing, respirators, multi-gas monitors • Reduces overall tool-time by 15-20% Permit-to-Work • Active refinery units: Hot work/hazardous area permits • Can consume up to 1.5 hours per day of 10-hour shift Technical Differences: Cable Glands • Ex d: Flameproof/barrier glands with epoxy sealing (30-60 min cure time) • Ex i: Standard simplified glands Enclosures • Ex d: Heavy "bomb-proof" enclosures requiring mechanical support • Ex i: Lightweight devices Live Maintenance • Ex d: Requires full power isolation and hot-work permit • Ex i: Can perform live maintenance without shutdown (major operational advantage) Best Applications • Ex d: High-power equipment (motors, heaters, heavy actuators) where energy can't be limited • Ex i: Low-power sensors, communication tools, portable devices