ELECTRICAL SYSTEMS DESIGN

Maffett Loftis Engineering takes installation demands, cost concerns, and hazard risks into account to engineer and design electrical systems that meet both practical needs and electrical code standards.



Power

  • Voltage / Amperage requirement calculations
  • Demand power load calculations
  • Main service entrance capacity
  • Step-down transformers
  • Main distribution panels
  • Circuit panels
  • Short Circuit Fault (AIC) Rating
  • Feeder sizing - ampacity, derating, and voltage drop considerations
  • Conductor insulation type
  • Grounding and bonding
  • Mechanical equipment power
  • Garbage disposals, water heaters, and hot water circulation pumps
  • General Outlets
  • Bath / Kitchen GFCI outlets
  • Bedroom ARC outlets
  • Exterior WP GFCI outlets
  • Phone / Data outlets
  • Emergency power generators

Lighting

  • Fixture specification
  • Detailed load calculation
  • General lighting
  • Theatrical lighting - supply power only
  • Foot candle calculations
  • Night fixtures
  • Emergency fixtures
  • Site / parking fixtures
  • Switching
  • Contactors / lighting controls

Code Compliance

  • NEC - National Electric Code
  • NFPA - National Fire Protection Agency
  • IBC - International Building Code
  • UL - Underwriters Laboratory
  • NEMA - National Electrical Manufacturers Association
  • SBCCI - Standard Building Code
  • ADA - Americans with Disabilities Act

Electrical Engineering Studies

More Info
  • Arc Flash Consulting
  • Electrical Data Collection
  • Short Circuit, Selective Coordination, and Arc Flash Analysis
  • Arc Flash Warning Labels
  • Electrical Safety Training
  • OSHA, NEC® and NFPA 70E Training

Trade Coordination

  • Mechanical - HVAC equipment loads
  • Mechanical - HVAC service outlets
  • Mechanical - Lighting with air diffusers
  • Fire Alarm - Smoke detection in ductwork
  • Fire Alarm - Lighting with smoke detectors
  • Fire Sprinkler - Lighting with sprinklers
  • Fire Sprinkler - Flow switches
  • Fire Sprinkler - Monitored valves

Fire Alarm

  • Central Program - Monitoring, addressing, initiation, backup, expansion, etc
  • Code Compliance - NFPA 70 & 101, ADA, UL, and IBC
  • Accessories - Horn/strobe stations, pull stations, smoke detectors
  • Trade Coordination - Mechanical, fire sprinkler, power & lighting, and architectural

Low Voltage

  • Nurse Call
  • Data & IT
  • Audio / Video Systems
  • Security Systems

Expert Witness

  • Case Evaluation
  • Code Expertise
  • Expert Opinion
  • Trial Testifying