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TECHNICAL DESCRIPTION: NR 10 TRAINING COURSE – SAFETY IN ELECTRICAL INSTALLATIONS AND SERVICES – APPLIED IN ENGLISH

Professional Qualification – Basic Concepts – Reference: 3051671

We deliver Courses and Professional Training; We also provide Technical Translations and Versions in the following languages: Portuguese, English, Spanish, French, Italian, Mandarin, German, Russian, Swedish, Dutch, Hindi, Japanese and others upon request.

WHAT IS THE OBJECTIVE OF THE SAFETY IN ELECTRICAL INSTALLATIONS AND SERVICES COURSE?

The objective is to qualify workers to operate safely in electrical installations and services involving electricity through theoretical and practical training, in accordance with the technical and legal requirements of Regulatory Standard NR 10 – Safety in Electrical Installations and Services, issued by the Brazilian Ministry of Labor and Employment.
The course aims to develop the following competencies:
 Identification, assessment and control of electrical hazards in low- and medium-voltage environments
Application of preventive measures according to the hierarchy of controls (EPC, PPE, operational procedures and lockout)
Interpretation of diagrams, electrical schematics, signage and mandatory technical documentation (Electrical Installation Dossier– PIE)
 Safe execution of installation, inspection, maintenance and operating activities, based on the parameters established by NR 10
Adequate response to emergency situations, including first aid and initial fire-fighting actions involving electrical sources

The technical differential of this program is that it is delivered entirely in English, ensuring that non Portuguese-speaking professionals fully understand the technical concepts and legal obligations required in Brazil.

WHAT ARE ELECTRICAL INSTALLATIONS?

Electrical installations are sets of components, equipment and conductors organized for the generation, transformation, transmission, distribution and utilization of electrical energy, operating in low voltage (LV ≤ 1,000 V) or medium voltage (MV up to 36.2 kV).

They may be:
Building installations (residential, commercial and institutional)
Industrial installations (manufacturing plants, power distribution centers)
Utility installations (hospitals, shopping centers, data centers, etc.)
These systems include:
Main and distribution switchboards
 Busbars, cable trays, circuit breakers, surge protection devices, RCDs, transformers
Lighting systems, outlets, motors and control circuits
Protection and switching devices
Grounding and equipotential bonding systems

WHERE DOES THE COURSE CONTENT APPLY DECISIVELY IN PROFESSIONAL PRACTICE?

The course content applies to any energized environment or any environment with the potential for energization even when the system is “turned off.” This includes switchboard operations, panel interventions, substation inspections, motor maintenance, equipment operation and service authorizations. The course teaches workers to see risks where many see only routine.

It also qualifies professionals to manage technical documentation, prepare and interpret dossiers, electrical schematics, lockout checklists and apply methodologies such as preliminary risk analysis and work permits. Application is constant from planning to execution. The course prepares the worker to be more than an operator: to become a critical safety link in the operation.

WHAT ARE THE MOST CRITICAL ERRORS MADE BY UNTRAINED ELECTRICAL PROFESSIONALS?

The main errors involve underestimating risks and relying on overconfidence. Workers without proper training tend to ignore essential steps such as testing for absence of voltage, analyzing single-line diagrams or correctly using EPCs. Another common mistake is using uninsulated metal tools in energized environments a potentially fatal action.

Another recurring issue is acting based on “guesswork,” ignoring how electrical systems behave under load or during failures. This includes automatic reclosing, lightning surges, leakage currents and electromagnetic fields. The course teaches professionals to replace habits with technical criteria, transforming unconscious insecurity into conscious control.

WHAT TYPES OF ELECTRICAL SERVICES ARE COVERED?

The NR 10 Training Course, applied in English, prepares workers to operate safely in various electrical service activities, emphasizing the correct application of operational procedures, PPE/EPC use and accident prevention. The focus is on ensuring safe, precise and compliant execution in industrial, commercial and building environments. Key services include:

Assembly and disassembly of electrical panels and switchboards
Preventive and corrective maintenance in low- and medium-voltage systems
Interventions in energized circuits following risk analysis and protective measures
Installation of protection devices
Work at height involving electrical hazards (NR 10 + NR 35)
Electrical measurements and testing

WHAT IS THE IMPORTANCE OF THIS COURSE?

The NR 10 Training Course is mandatory for all professionals who interact with electrical installations and services, as required by Ministry of Labor Ordinance nº 598/2004. Its completion is a legal and technical prerequisite for authorization to work in electrical risk environments.

Its importance is centered on:
Compliance with current legislation (NR 10)
Reduction of severe or fatal accidents
Qualification of competent workers
Promotion of electrical safety culture
Integration of non-Portuguese-speaking professionals into Brazilian standards

IF THE INSTALLATION IS TURNED OFF, WHY DO YOU STILL NEED TO APPLY NR 10 PROCEDURES?

Because “turned off” does not mean “safe.” There may be residual voltage, induction, capacitance and, in industrial systems, automatic reclosing. The belief that “a switched off panel is harmless” is exactly what turns panels into fatal traps.

The course teaches that safety only exists after absence of voltage testing, lockout tagout, grounding verification and documentation validation. Anyone who skips these steps however well intentioned is relying on luck, not on technical control.

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Attention: This is a Basic-Level Free Professional Development Training. *It is not a substitute for academic education or technical-school certification.