Domain 1: Safety (20%)
Safety is 20% of the exam — the smallest of the four domains, but the one with the least excuse for losing marks: the five tasks are the same five tasks and the same 23 knowledge items that appear in the PV Associate JTA — we compared them line by line, and 22 of the 23 match word for word, the last differing only by "e.g." versus "i.e." If you have studied for PVA, you have studied this domain. What changes is context, not content: the hazards are the ones you meet arriving at a site that is already energised and producing.
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Task 1: Hazard Identification and Controls
— 6 knowledge items
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Task 2: Safe Work Practices
— 4 knowledge items
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Task 3: Safety Plan
— 6 knowledge items
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Task 4: Electrical Safety
— 4 knowledge items
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Task 5: Working at Height
— 3 knowledge items
Deep dive into Safety →
Domain 2: Core Knowledge (30%)
Core Knowledge is the biggest single domain at 30%, up from 20% on the PV Associate exam. Five tasks cover PV system types, components and their functions, electrical concepts, codes and standards, and equipment specifications. Note what the JTA does and does not name: it says "Electrical codes (e.g., national, state, and local codes)" — it never names the NEC. Expect questions about what a code requirement is for, not about article numbers.
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Task 1: Types of PV Systems
— 4 knowledge items
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Task 2: Components of PV Systems and Functionality
— 9 knowledge items
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Task 3: Electrical Concepts
— 8 knowledge items
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Task 4: Codes and Standards
— 4 knowledge items
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Task 5: Equipment Specifications
— 8 knowledge items
Deep dive into Core Knowledge →
Domain 3: Existing System Infrastructure Considerations (28.3%)
Existing System Infrastructure Considerations is 28.3% of the exam and has no counterpart by name on the PV Associate exam — but almost every one of its 24 knowledge items appears in the PVA JTA, inside Design and Installation. The regrouping is the point. PVA asks these questions from the position of someone specifying and building a system; OMAT asks them from the position of someone standing in front of a system that someone else built years ago, with a plan set that may or may not match what was installed.
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Task 1: PV System Plan Sets
— 8 knowledge items
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Task 2: Mounting Structure Types and Installation
— 7 knowledge items
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Task 3: Electrical Equipment Installation
— 6 knowledge items
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Task 4: Energy Storage Installation
— 3 knowledge items
Deep dive into Existing System Infrastructure Considerations →
Domain 4: Operations and Maintenance (21.7%)
Operations and Maintenance is 21.7% of the exam across six tasks — the most tasks of any domain, and the only domain where the four content areas are performance, monitoring, test equipment and fault diagnosis rather than knowledge of components. Task 3 alone lists nine instruments. This is the part of the blueprint that is genuinely about the job title, and it is worth noticing that it is only about a fifth of the exam: candidates who study only this domain are studying a fifth of the test.
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Task 1: Performance Parameters
— 6 knowledge items
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Task 2: System Monitoring Equipment and Applications
— 7 knowledge items
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Task 3: Electrical Test Equipment and Application
— 9 knowledge items
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Task 4: Deviations from Expected Performance
— 5 knowledge items
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Task 5: Maintenance of PV Systems
— 5 knowledge items
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Task 6: System Commissioning
— 4 knowledge items
Deep dive into Operations and Maintenance →