Electrical
Switchgear
A switchgear is equipment in the electrical category. Medium and low voltage assemblies carrying incident energy labelling and equipment identification.
Also called: MCC, motor control center, medium voltage switchgear, gear.
Governing standards
NFPA 70E
Standard for Electrical Safety in the Workplace
Arc flash risk assessment, incident energy labelling, and PPE category marking on energised equipment.
Issued by National Fire Protection Association
NFPA 70
National Electrical Code
Panel directories, disconnect identification, and available fault current marking.
Issued by National Fire Protection Association
Required artifacts
| Artifact | What it does |
|---|---|
| Engraved nameplate | A rigid engraved plate identifying equipment, a circuit, or a disconnect, readable for the life of the asset. |
| Arc flash label | A label carrying incident energy, working distance, arc flash boundary and the PPE required for energised work. |
Which of these you actually need, and on what cycle, depends on your jurisdiction. We publish that only where we have read the governing clause and can cite it. Where we have not, the page says so rather than guessing.
What it is
Medium and high voltage assemblies that switch and protect distribution circuits - breakers, disconnects, buswork and protective relays, in metal enclosures, often in a dedicated room with restricted access.
Why it gets inspected
Switchgear fails by insulation degradation and mechanism wear, both invisible from outside. A breaker that has not operated in five years may not open when a relay finally asks it to, which turns a fault into a fire.
What happens on a visit
Usually an outage: exercise the mechanisms, test insulation resistance, verify relay settings against the coordination study, torque check connections, and record what was found before anything was corrected.
What drives the tag count
Medium voltage assemblies usually carry both an equipment identifier and incident energy labelling, and the labelling is refreshed whenever the study is redone or the upstream protection changes. That refresh cycle, not an annual one, is what to order against.
What actually gets tagged, and where it goes
Switchgear carries the same categories of marking as a panel but the stakes and the service life are higher, and the equipment is normally in a dedicated room rather than a corridor. Arc flash labelling goes on the outer face at eye height so it is readable before the enclosure is opened, which is the entire point: a label inside the door is read after the decision it was supposed to inform. Laminated polyester is specified for print permanence rather than for toughness, since the environment is mild but the service life is measured in decades.
What a scan of switchgear shows
This is the clearest case on the site where the record protects a person rather than a filing obligation. A worker reads an arc flash label to decide what protective equipment to wear, and the label is silent about whether the study behind it reflects the current configuration. A scan gives the study date and revision history, so the worker can establish whether they are reading a current conclusion or one that predates a service upgrade.
Every artifact here is serialised, so the record survives the tag being replaced. The mechanics are on how inspection records work.
Sizing an order for a fleet of switchgear
Low volume and long lived, so these are ordered against a study or a project rather than on a recurring cycle. The reorder trigger is a system change or a study revision, not a calendar. Because the quantities are small and the labels are specified rather than generic, this is the item most worth ordering at the same time as the associated panel labelling rather than separately.
Minimum is 100 units and every price is on the page, so a first order can be a test rather than a commitment. Why the minimum is 100, not 2,500.
Inspected on the same visit
Switchgear and distribution panels are covered by the same incident energy analysis and labelled together, so ordering them separately means two deliveries against one study. In a facility with a data room, the same electrical programme frequently extends to the rack power distribution, which is where the electrical and the infrastructure identification families meet. Quantities here are small and specified rather than generic, which is exactly why combining them with the associated panel labelling is worth doing.
Ordering switchgear: common questions
Where should the arc flash label go?
On the outer face at eye height, so it is readable before the enclosure is opened. A label inside the door is read after the decision it was supposed to inform, which defeats the purpose entirely. This is the one placement decision on the site with a direct safety consequence.
What triggers a reorder?
A system change or a study revision, not a calendar. Switchgear labelling is low volume and long lived, so it is ordered against a project rather than on a recurring cycle. It is worth ordering at the same time as the associated panel labelling rather than separately.
How does a worker know the label is current?
By scanning it. The label states a conclusion and is silent about whether the study behind it reflects the current configuration. A scan gives the study date and revision history, so the worker can establish whether they are reading something that predates a service upgrade.