Register Here | Login | My Account | Shopping Cart | Customer Service | Search| Items in Cart (0) | Quotes (0)
Call 1-800-369-6671
(Military/Intl Sales - 214-616-6180)
LIGHT TOWERS IN STOCK
       
 

Vast Inventory for Fast Shipping. Custom Builds Available, Rentals and Sales.
Most items in stock for fast shipping!! UPS Ship Map Credit cards & Paypal Accepted
Home - Articles You're NOT logged in, Please log in   

Search:
Company Information

Product #:

         
ATEX and IEC Ex Flame-proof Explosion Proof Lighting & Equipment
Explosion Proof Lights
Explosion Proof Motors - Motors for Hazardous Locations
Industrial and Vaporproof Emergency Failsafe Lighting
Industrial Cord Reels and Tool Taps
Industrial Work Area Heaters
Machine Vision Lights
Megatower™
QC Series Industrial Portable Lighting - Quick Change Mount
Rig Lights
Stadium lights
String Lights and Temporary Light Stringers
Tank Cleaning Lights
Three Phase Motor Soft Starters
Vapor Proof LED Lights
Variable Frequency Drives (VFDs)
Vehicle Mounting Plates
Workboat Light Fixtures & Lighting Equipment
Yacht Engine Room Lights
Color Changing LED RGB Lighting
Explosion Proof Cord Reels
GOLIGHT Spotlights
Larson FUTURE - Lease Lighting
Remote Area Lighting and Scene Lights
Utility Bucket Mount, Receiver Hitch & Trailer Mount Lighting
Aevum Control Lighting and Equipment - IIoT
Butane and Solvent Extraction Room Lighting and Equipment
DC to DC Transformers and Power Supplies
Explosion Proof Fans & Blowers
Explosion Proof Paint Spray Booth Approved Lights
Explosion Proof String Lights
Explosion Proof Switchgear & Controls
Fleet Service Lights and Lighting Equipment
Industrial Equipment Trailers
Industrial Handlamps & Droplights
ISO 14644/FS-209E Clean Room Lighting
LED Blasting Lights
Night Time Fishing Lights
Portable AC Power Supply Units
Portable Power Distribution Panels
Power Distribution Panels with KVA Transformers
Self-Contained Lighting
Service Pit Lighting
Solar Generators & Solar Powered Lighting
Agricultural Farm Equipment Lighting & Beacons
Explosion Proof Cameras & Surveillance Systems
Explosion Proof Emergency Lights
Explosion Proof Heaters
Garage & Gas Station Canopy Lights
LED Grow Lights
LED Lights
NDT Ultraviolet Lights
Portable Hazardous Location Lighting
Radio Communication Towers and Equipment
Salt Water Processing Equipment
Shelter & Tent Lighting
Thermal Monitoring Cameras and Systems
48V LED Equipment Lights
ATEX Rated Explosion Proof Lights
Automotive Lighting
Class Rated Signals, Alarms, and Systems
Hazardous Location Area Lights and Portable Lighting
HID Equipment Lights
Hot Work Permit Lighting and Equipment
Hunting Lights
Industrial lasers
Industrial Transformers
Light Towers
Outdoor Lighting
Remote Security and Surveillance Systems
Temporary Construction Lights
Vehicle Mounted Spotlights
Equipment & Heavy Machinery LED Light Package Fitouts
Phase Converters - Single to Three Phase
Marine Shore Power Cords and Equipment
24 Volt Military Lights
Disaster Relief / First Responders / Search & Rescue Lighting
Plastic Handcuff Key
110/120 Volt Flood Lights
Post Mount Spotlights
Magnetic Work Lights
Crank-up Light Masts
**********    
Intrinsically Safe Lights
Military Flashlights
LED Waterproof Lanterns
Work Area Lights
12 Volt Flood Lights
**********    
**********    
Boat Spotlights
New Boat Lights
HID Boat Lights
Boat Dock Lights
**********    
Remote Control Lights
Control Lights
Tow Lights
Magnetic Control Lights
**********    
NEW Lights and New Products
Evaporative Coolers
Police Equipment
AC/DC Transformers
Power Supplies
**********    
Military Spotlights 24V
Infrared Filters, Covert Covers, and Blackout IR Lenses
Military Equipment
Ultralife Batteries
Remote Control Pan Tilt Base
**********    
Larson Electronics Spotlights
Larson Electronics Parts
Replacement Lamps
Cords - Brackets
Portable Wheeled Generators
Non-Hazardous Location Extension Cords / Plugs / Outlets
**********    
HID Work Lights
HID Dive Lights
HID Off Road Lights
Acro Lights HID Lights
Halogen Lights
**********    
Acro Light Flashlight
Xenon HID Flashlights
Powerlight Flashlight
HID Flashlights
Xenon Flashlights
**********    
LED Status Lights
Forklift Lights
Tractor Lights
HID Post Mount Lights
Roof Mount Lights
Post Mount Light parts
**********    
Flashlight Holder
Magnet Spotlight Base
Tripods-Magnetic Base
**********    
Recharging Spotlights
Fire Rescue Lights
LED Street Lights
Utility Lights
**********    
Hazard Lights
Strobe Lights - Battery Operated
Strobes & Beacons
Strobe Light Bars
**********    
Headlights - Headlamps - Hard Hat Lights
Flashlights
**********    
Suction Mount Lights
Magnetic Spotlights
12/24 Volt Spotlights
Gifts For Men
**********    
**********    
New 12 / 24 Volt Lights
Explosion Proof Accessories and Replacement Parts
Explosion Proof Lighting
Explosion Proof Hand Lamps (Drop Lights)
Explosion Proof Lights - Stand/Dolly
Explosion Proof Tank Lights
Explosion Proof Phones and Intercoms
Explosion Proof Extension Cords
Black Friday & Cyber Monday Specials
Crane Lights
Explosion Proof Light Rentals
General Light Rentals
Light Tower and Light Plant Rentals
Power Distribution Rentals
**********    
Power Plant Lighting
Refinery lights
Environmental Services Lights
Aerospace Lights
Chemical Plant Lights
Food Grade Safe Lights
Film and Entertainment Lights
Handheld Meters and Devices
Waste Water Treatment Lights
Mining Lights
Ship Yard Lights
Work Site Lighting
         

   
11/19/18 Conduit vs Flexible Cable and Combustible Sites

Article - November 19, 2018 By LarsonElectronics.com

Hazardous Location Conduit Body - C1D2/C1Z2 - 3.5 Elbow Conduit Body - Gasketed Cover - Aluminum

Conduit vs Flexible Cable and Combustible Sites

In industrial facilities, electrical wirings must be protected to ensure reliable performance of equipment, machines and electronics. Conduits, or solid hollow pipes, are typically used to house wires, cables and other types of connections, which prevents exposure to moisture, flammable compounds (in explosive environments) and corrosive substances.

Conduits and cables come in many different sizes, materials and forms. The components are supported by elbows, junction boxes, seals, nipples and connectors, which form a raceway system. With this in mind, it is important to know how the various types differ and their respective applications. The National Electric Code (NEC) also provides several guidelines about conduits and cables, with provisions pertaining to combustible sites, wiring methods, appropriate lengths and conditions.


What’s the Difference?

By definition, a rigid conduit is a non-flexible pipe that can be non-metallic or metallic; and in most cases are threaded at the ends for ease of installation. Non-metallic, rigid conduits can take on plastic or vinyl construction (PVC) and come with lightweight, low-cost, corrosion-resistant and UV-resistant properties.

On the other hand, metallic, rigid conduits (RMC, RSC) are heavy-duty pipes that are constructed of aluminum, steel, stainless steel or brass – depending on the requirements of the installation. Metallic, rigid conduits can also be galvanized (GRC) or treated with an extra organic coating (IMC) to make the electrical accessory more resilient against heat, corrosion and other damaging elements at the work site.

Emphasizing the stiff characteristics of rigid conduits, these units are non-flexible. Challenges surrounding this feature are addressed using flexible metal conduits (FMC) or Greenfield – another term for the conduit (NEC Article 501.10 1-2). This type of conduit looks like a metallic cable protected with an external, spiral armor. Like metallic, rigid conduits, FMCs can be treated with special coatings, such as plastic (Liquid tight flexible metal conduit or LFMC), for additional protection in extreme environments (NEC Article 501.15 2).


Flexible Cables and NEC Regulations

Not all electrical installations in industrial buildings require conduits. Depending on the requirements of the location, device/machine and project, armored cables are sometimes used for connections. For instance, an MC-HL cable is a metal clad, continuously welded sheath cable used in hazardous locations, wet/dry conditions, directly buried and extreme environments (NEC Article 501.10c).

According to the NEC, this type of cable, as well as Type ITC-HL (NEC Article 501.10d) and optical fiber cables (NEC Article 501.10e), should only be utilized in industrial locations “with restricted public access” i.e. conditions that require qualified individuals for proper installation and maintenance. For combustible locations, the applicable cable type must be rated for Class I, Zone 1 or Class I, Division 1. For MC-HL cables, installations using this type of accessory should adhere to NEC Article 330, Pt II. Optical fibers are suitable for installation in raceways and should be sealed, based on practices outlined in NEC Article 501.10a and 501.15.


Uses and Applications

Starting with rigid conduits, this type of accessory can be used in underground, above ground, outdoor and explosive sites (see restrictions and recommendations above). Moreover, non-flexible units are suitable for stationary devices and machines that are fixed, contain non-moveable parts and are permanently mounted. The specific type of rigid conduit to be used will depend on the environment, as well as the damaging elements present during operation.

An explosion proof exit sign is an example of a unit that requires rigid conduit during installation. The light does not contain any moveable or rotating parts; and using a threaded, rigid metal conduit ensures compliance with NEC provisions in Article 501.10. Other types of units that benefit from rigid conduits include the following: stationary sensors, permanent-mount non-portable lighting systems, push-button control units, control stations and explosion proof horns.

Flexible metal conduits and flexible cables are utilized when fixed or portable equipment feature moving or rotating parts. Furthermore, the accessories are recommended for locations and machines that experience heavy vibration, such as motors, rotating fans and mixers. Installations with complex raceways may also use FMCs, such as vent systems and exhausts. Watertight variants are applicable to wet locations, while standard FMCs are found in dry installations.

Lastly, flexible, heavy-duty cables are recommended for use in explosive environments, with limitations surrounding access (NEC Article 501.10c). In installations wherein rigid conduits are not practical, FMCs are used (applications may vary, depending on building code and limitations related to length and size).





Related Categories/Products
Category/Product (click on link below for more information)
Cable Wire - Wiring Sold Per Foot
Explosion proof conduit, seal offs, elbows, and junction boxes for extraction rooms/extraction hoods
1-inch Cord Grip (to use with EYM) to seal off wiring connections to explosion proof lights
12/4 SOOW - 12 AWG 4-Conductor Cable - 600V Rated - Industrial Service Cord
Explosion Proof Pulling Elbow - 3/4" Hub - 90 Degrees - Aluminum
Explosion Proof Sealing Fitting - Class I, II, III - Iron - 3.5" NPT Hub - Gray
Hazardous Location Conduit Body - C1D2/C1Z2 - 3.5" Elbow Conduit Body - Gasketed Top Cover
Explosion Proof Union - Class I, II, III - 3.5" Male to Female Union - Threaded - Iron
Explosion Proof Conduit Coupling - 3.5" Male to Female Union - Threaded - Aluminum -C1D1
10/4 SOOW - 10 AWG 4-Conductor Cable - 600V Rated - Industrial Service Cord
Home | Contact Us | Return Policy | Privacy Policy | Security Policy | Copyright © 2006-2018. All Rights Reserved.