1st Choice in Control Panels
Installation for HazLoc
Class 1, Division 2 (NEC 500)
Class 1, Division 2 (C1D2) is a safety-critical application area that determines approval, insurability, and operational safety of machines in the USA. Here, “good industrial practice” is not sufficient. What is decisive is the consistent implementation of NEC requirements down to the last detail.
As a specialist for machines and control panels in hazardous areas, we handle the planning and implementation of electrical installation, cable routing, and control panel construction for machines in Class 1, Division 2 (HazLoc).
Faster to NEC-compliant machines in hazardous areas with our control panels
Planning
We handle cable design and planning of control systems for your machine in hazardous areas.
Manufacturing
We build your control panel in accordance with the guidelines for North America.
Documentation
Detailed documentation of the C1D2 installation to demonstrate NEC-compliant implementation.
Are you planning a machine for C1D2 according to NEC 500?
You are facing a US-specific safety classification that differs significantly from European standards. Many machines that are properly constructed according to European standards do not meet the formal requirements of NEC 500. Deviations often only become apparent during acceptance tests or audits in the USA.
Without in-depth NEC understanding, delays, modifications, and discussions with inspectors occur. C1D2 is not a learning field. Therefore, rely on specialized expertise in hazardous areas early on and speak with us before your decisions become irreversible.
How can Krayer Systemtechnik support in the C1D2 area?
Electrical Installation
We implement electrical installation for machines in Class 1 Division 2 according to NEC 500: from cable routing to connection to the control panel. We do not view the machine in isolation, but in conjunction with the environment, risk, and acceptance requirements.
NEC Compliance
Cable routing and cable design at Krayer are consistently carried out according to NEC 500. Installation method, cable type, temperature, and installation details are designed in accordance with standards, so that your machine remains testable, audit-proof, and permanently operable.
C1D2-Capable Control Panels
Our control panels and installation concepts are designed for Class 1 Division 2. Every component is considered in the normative context, without gray areas. The result is technical clarity that makes acceptance tests plannable and avoids later discussions.
Do you have any questions, or would you like some advice with no obligation?
Do you have questions about our products and services and would like to learn more about Krayer? Then don’t hesitate to contact us! Our experts will be happy to assist you.
Do you have any questions, or would you like some advice with no obligation?
Do you have questions about our products and services and would like to learn more about Krayer? Then don’t hesitate to contact us! Our experts will be happy to assist you.
What does Class 1 Division 2 mean?
Class 1 Division 2 describes, according to NEC 500, a hazardous location (Hazardous Location / HazLoc) in which flammable gases or vapors are not permanently present under normal operating conditions, but can occur in the event of failure, leaks, or malfunctions.
Machines and electrical installations in C1D2 must therefore be executed in compliance with NEC 500 to avoid ignition sources and ensure approval, acceptance, and safe operation in the USA.
Difference between C1D2 and C1D1
The difference between Division 1 and Division 2 lies in how frequently explosive gases or vapors occur. In Division 1, they are permanently or regularly present during normal operation. In Division 2, they only occur in the event of malfunction or failure. However, this does not make Division 2 simpler: many industrial standard solutions are formally not permissible there, and deviations often only become visible during acceptance tests or audits.
NEC (Class/Division) vs. ATEX
ATEX and NEC 500 are based on different safety concepts. ATEX works with a zone model and is strongly equipment-focused. NEC 500, on the other hand, follows the Class/Division system and focuses on correct electrical installation, cable routing, and detailed execution. An ATEX-compliant machine is therefore not automatically suitable for C1D2 according to NEC 500—particularly for HazLoc applications for the US market.
Cable Planning and Installation in Class 1 / Division 2
Reliable Cable Routing
Standards-compliant cable routing is a central safety factor in C1D2 environments. Decisive are permissible wiring methods according to NEC 501.10(B), proper separation of circuits, and protection against gas migration, mechanical damage, and potential ignition sources.
Typical Cable Routing Errors
Common errors arise from impermissible plastic conduits or cable trays, faulty transitions between tray, machine, and control panel, as well as non-permissible installation solutions. These deviations often only become visible during acceptance tests or audits.
Critical Aspects of Cable Design
For cable selection in C1D2 applications, a purely electrical consideration is not sufficient. Cable type, installation method, temperature class (T-Code), bundling, and chemical resistance must comply with NEC 500 requirements.
An Underestimated Risk
An incorrectly selected cable can jeopardize the acceptance of the entire machine, raise insurance questions, and cause expensive retrofits.
Our Expertise
Krayer plans and implements cable routing and cable design in accordance with NEC 500 standards. Installation method, cable type, and dimensioning are coordinated from the outset with the machine, environment, and acceptance requirements—for a testable, audit-proof, and acceptance-ready installation.
Control Panel Construction for HazLoc C1D2
A control panel for Class 1 Division 2 is not a standard control panel with a higher degree of protection. In addition to suitable NEMA types, temperature management, permissible components, correct entry systems, and proper documentation according to NEC and UL are decisive.
Not "Standard NEMA 4X"
What must be considered in control panel construction:
- Suitable NEMA types (e.g., 4X)
- Temperature management with regard to T-Codes
- Permissible components, terminals, connectors
- Correct entry systems and seals
- Documented compliance according to NEC & UL
Installation Material in Focus
In C1D2 applications, inconspicuous components often determine the compliance of the entire installation. Cable ties, fastening systems, sealing rings, or transitions between machine and infrastructure must be executed in compliance with NEC and UL. A single non-approved detail can invalidate UL compliance or result in legal risks for the operator.
Control Panel and Service for Your Machine in Hazardous Areas
Our strength in hazardous areas (Ex-Zone) is not only control panel construction according to UL 1203, but the understanding of the overall system of machine, standard, and risk. We know the details and plan them deliberately for a smooth process.
Safe
We have mastered the complex UL standards. We have successfully proven this with our certification.
Efficient
We know what goes where. Processes are optimized—in development, procurement and production.
Hassle-free
We label your UL panel with the UL certificate. This means it can be put into operation immediately in the USA or Canada.
