Article 105 — who owns what.
New in the 2027 edition. Article 105 pulls employer and employee responsibilities into one place and, in doing so, makes one thing explicit that used to be implied: training has to be documented.
The employer establishes the electrical safety program, provides the training, supplies the PPE and equipment, and documents that the training happened. The employee follows the program and the safety-related work practices. Neither duty is new. The documentation requirement being written down is.
§ Why a new article
In the prior edition, responsibility language was scattered — some in Article 110, some inferred from the program requirements. The 2027 edition consolidates it, which matters less for what you have to do and more for what an inspector can point at.
§ Employer responsibilities
- Establish, document and implement the electrical safety program.
- Provide training so employees can identify and avoid the electrical hazards they will be exposed to.
- Document that training — see below.
- Provide the PPE, tools, test instruments and protective equipment the work requires.
- Verify the qualifications of contract employees working on your site, and exchange hazard information with them (110.5).
- Audit the program, the LOTO procedures, and employee work practices on the required intervals.
§ Employee responsibilities
- Follow the safety-related work practices and procedures the employer provides.
- Use the PPE and protective equipment supplied, and inspect it before use.
- Report unsafe conditions, damaged equipment and incidents — including near-misses.
- Do not perform work they are not qualified for. Qualification is task- and equipment-specific under 110.4(A)(1)(b).
§ Documented training — 105.3(A)
Training documentation is now an explicit requirement, not an inference from the program section. If you trained someone and cannot produce a record, for the purposes of this standard the training is not established.
A defensible record names the employee, the date, the content, the edition of the standard taught, the method of evaluation, and who delivered it.
Companies that can produce a stack of attendance sheets but cannot show what was taught or which edition. A sign-in sheet is attendance, not a training record. If your people were trained on a prior edition, the record should say so — because they now need the 2027 delta.
§ What this means in a data center
Data centers run on contract labor — OEM service technicians, electrical subs, commissioning agents, remote hands. Article 105 sits directly on top of the 110.5 host/contract employer exchange: you are responsible for verifying their qualifications, and they are responsible for documenting the training that establishes those qualifications.
The practical artifact is the prequalification package. Owners and GCs already demand one. The 2027 edition just made the training record inside it a standard requirement rather than a contractual nicety.
Article 110 →
The program, qualification, and the audit intervals that changed.
For employers →
What a defensible training record contains.
Training records that survive an inspection
Every attendee gets a certificate naming the edition, the content and the evaluation — the record 105.3(A) now requires you to hold.
See the schedule Bring it onsite