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Our Story
J-Master s electrical corp. has been in business since 2010 ,
We are Electrical contractor with over 30 years of Experience in the field ,
Our main goal is to be of service to Community and provided a high Quality service at affordable rates
We take prided in our attention to detail and dedication to Delivering Top notch services
while ensuring safety and satisfaction to our Valued customers .
What We Do
Regions & Counties Serviced
- California-Los Angeles and Vicinity
California 1
- Los Angeles
Our CSI Codes
25 05 26 - Grounding and Bonding for Integrated Automation
26 01 10 - Operation and Maintenance of Medium-Voltage Electrical Distribution
26 01 20 - Operation and Maintenance of Low-Voltage Electrical Distribution
26 01 26 - Maintenance Testing of Electrical Systems
26 01 30 - Operation and Maintenance of Facility Electrical Power Generating and Storing Equipment
26 01 40 - Operation and Maintenance of Electrical and Cathodic Protection Systems
26 01 50 - Operation and Maintenance of Lighting
26 01 50.51 - Luminaire Relamping
26 01 50.81 - Luminaire Replacement
26 05 13 - Medium-Voltage Cables
26 05 13.13 - Medium-Voltage Open Conductors
26 05 13.16 - Medium-Voltage, Single- and Multi-Conductor Cables
26 05 19 - Low-Voltage Electrical Power Conductors and Cables
26 05 19.13 - Undercarpet Electrical Power Cables
26 05 23 - Control-Voltage Electrical Power Cables
26 05 26 - Grounding and Bonding for Electrical Systems
26 05 29 - Hangers and Supports for Electrical Systems
26 05 33 - Raceway and Boxes for Electrical Systems
26 05 36 - Cable Trays for Electrical Systems
26 05 39 - Underfloor Raceways for Electrical Systems
26 05 43 - Underground Ducts and Raceways for Electrical Systems
26 05 46 - Utility Poles for Electrical Systems
26 05 48 - Vibration and Seismic Controls for Electrical Systems
26 05 53 - Identification for Electrical Systems
26 05 73 - Overcurrent Protective Device Coordination Study
26 06 10 - Schedules for Medium-Voltage Electrical Distribution
26 06 20 - Schedules for Low-Voltage Electrical Distribution
26 06 20.13 - Electrical Switchboard Schedule
26 06 20.16 - Electrical Panelboard Schedule
26 06 20.19 - Electrical Motor-Control Center Schedule
26 06 20.23 - Electrical Circuit Schedule
26 06 20.26 - Wiring Device Schedule
26 06 30 - Schedules for Facility Electrical Power Generating and Storing Equipment
26 06 40 - Schedules for Electrical and Cathodic Protection Systems
26 06 50 - Schedules for Lighting
26 06 50.13 - Lighting Panelboard Schedule
26 06 50.16 - Lighting Fixture Schedule
26 08 00.00.01 - Commissioning of Electrical Systems
26 09 13 - Electrical Power Monitoring and Control
26 09 23 - Lighting Control Devices
26 09 26 - Lighting Control Panelboards
26 09 33 - Central Dimming Controls
26 09 33.13 - Multichannel Remote-Controlled Dimmers
26 09 33.16 - Remote-Controlled Dimming Stations
26 09 36 - Modular Dimming Controls
26 09 36.13 - Manual Modular Dimming Controls
26 09 36.16 - Integrated Multipreset Modular Dimming Controls
26 09 43 - Network Lighting Controls
26 09 43.13 - Digital-Network Lighting Controls
26 09 43.16 - Addressable Fixture Lighting Control
26 09 61 - Theatrical Lighting Controls
26 10 00.00.01 - Medium-Voltage Electrical Distribution
26 11 13 - Primary Unit Substations
26 11 16 - Secondary Unit Substations
26 12 13 - Liquid-Filled, Medium-Voltage Transformers
26 12 16 - Dry-Type, Medium-Voltage Transformers
26 12 19 - Pad-Mounted, Liquid-Filled, Medium-Voltage Transformers
26 13 13 - Medium-Voltage Circuit Breaker Switchgear
26 13 16 - Medium-Voltage Fusible Interrupter Switchgear
26 13 19 - Medium-Voltage Vacuum Interrupter Switchgear
26 18 13 - Medium-Voltage Cutouts
26 18 16 - Medium-Voltage Fuses
26 18 19 - Medium-Voltage Lightning Arresters
26 18 23 - Medium-Voltage Surge Arresters
26 18 26 - Medium-Voltage Reclosers
26 18 29 - Medium-Voltage Enclosed Bus
26 18 33 - Medium-Voltage Enclosed Fuse Cutouts
26 18 36 - Medium-Voltage Enclosed Fuses
26 18 39 - Medium-Voltage Motor Controllers
26 20 00.00.01 - Low-Voltage Electrical Distribution
26 21 00.00.01 - Low-Voltage Overhead Electrical Power Systems
26 22 13 - Low-Voltage Distribution Transformers
26 22 16 - Low-Voltage Buck-Boost Transformers
26 22 19 - Control and Signal Transformers
26 23 13 - Paralleling Low-Voltage Switchgear
26 24 13 - Switchboards
26 24 16 - Panelboards
26 24 19 - Motor-Control Centers
26 25 00.00.01 - Enclosed Bus Assemblies
26 26 00.00.01 - Power Distribution Units
26 27 13 - Electricity Metering
26 27 16 - Electrical Cabinets and Enclosures
26 27 19 - Multi-Outlet Assemblies
26 27 23 - Indoor Service Poles
26 27 26 - Wiring Devices
26 27 73 - Door Chimes
26 28 13 - Fuses
26 28 16 - Enclosed Switches and Circuit Breakers
26 29 13 - Enclosed Controllers
26 29 13.13 - Across-the-Line Motor Controllers
26 29 13.16 - Reduced-Voltage Motor Controllers
26 29 23 - Variable-Frequency Motor Controllers
26 30 00.00.01 - Facility Electrical Power Generating and Storing Equipment
26 31 00.00.01 - Photovoltaic Collectors
26 32 13 - Engine Generators
26 32 13.13 - Diesel-Engine-Driven Generator Sets
26 32 13.16 - Gas-Engine-Driven Generator Sets
26 32 16 - Steam-Turbine Generators
26 32 19 - Hydro-Turbine Generators
26 32 23 - Wind Energy Equipment
26 32 26 - Frequency Changers
26 32 29 - Rotary Converters
26 32 33 - Rotary Uninterruptible Power Units
26 33 13 - Batteries
26 33 16 - Battery Racks
26 33 19 - Battery Units
26 33 23 - Central Battery Equipment
26 33 33 - Static Power Converters
26 33 43 - Battery Chargers
26 33 46 - Battery Monitoring
26 33 53 - Static Uninterruptible Power Supply
26 35 13 - Capacitors
26 35 16 - Chokes and Inductors
26 35 23 - Electromagnetic-Interference Filters
26 35 26 - Harmonic Filters
26 35 33 - Power Factor Correction Equipment
26 35 36 - Slip Controllers
26 35 43 - Static-Frequency Converters
26 35 46 - Radio-Frequency-Interference Filters
26 35 53 - Voltage Regulators
26 36 13 - Manual Transfer Switches
26 36 23 - Automatic Transfer Switches
26 40 00.00.01 - Electrical and Cathodic Protection
26 41 13 - Lightning Protection for Structures
26 41 13.13 - Lightning Protection for Buildings
26 41 16 - Lightning Prevention and Dissipation
26 41 19 - Early Streamer Emission Lightning Protection
26 41 23 - Lightning Protection Surge Arresters and Suppressors
26 42 13 - Passive Cathodic Protection for Underground and Submerged Piping
26 42 16 - Passive Cathodic Protection for Underground Storage Tank
26 43 13 - Transient-Voltage Suppression for Low-Voltage Electrical Power Circuits
26 50 00.00.01 - Lighting
26 51 13 - Interior Lighting Fixtures, Lamps, And Ballasts
26 52 00.00.01 - Emergency Lighting
26 53 00.00.01 - Exit Signs
26 54 00.00.01 - Classified Location Lighting
26 55 23 - Outline Lighting
26 55 29 - Underwater Lighting
26 55 33 - Hazard Warning Lighting
26 55 36 - Obstruction Lighting
26 55 53 - Security Lighting
26 55 59 - Display Lighting
26 55 61 - Theatrical Lighting
26 55 63 - Detention Lighting
26 55 70 - Healthcare Lighting
26 56 13 - Lighting Poles and Standards
26 56 16 - Parking Lighting
26 56 19 - Roadway Lighting
26 56 23 - Area Lighting
26 56 26 - Landscape Lighting
26 56 29 - Site Lighting
26 56 33 - Walkway Lighting
26 56 36 - Flood Lighting
26 56 68 - Exterior Athletic Lighting
27 05 26 - Grounding and Bonding for Communications Systems
33 71 36 - Extra-High-Voltage Wiring
33 71 36.13 - Overhead Extra-High-Voltage Wiring
33 71 39 - High-Voltage Wiring
33 71 39.13 - Overhead High-Voltage Wiring
33 71 49 - Medium-Voltage Wiring
33 71 49.13 - Overhead Medium-Voltage Wiring
33 81 23 - Aerial Cable Installation Hardware
34 21 16 - Traction Power Substations
34 21 16.13 - AC Traction Power Substations
34 21 16.16 - DC Traction Power Substations
40 95 73 - Process Control Wiring
