Electrical & power distribution

Compare breaker families for branch, feeder and main distribution duties.

Check frame rating, trip unit and breaking capacity for the feeder.

Main distribution breakers with the required fixed or withdrawable arrangement.

Distinguish residual-current protection from combined overcurrent protection.

Match load duty, pole arrangement and coil voltage.

Coordinate motor overload settings with the starter and motor data.

Motor circuit protection selected for the starting and running requirements.

Specify coil supply, contact arrangement and timing function.

Identify circuits, mounting and indoor or outdoor enclosure requirements.

Main and sub-main assemblies quoted against drawings and load schedules.

Motor control assemblies coordinated with the specified starter functions.

State material, dimensions, mounting and enclosure protection.

State ratio, accuracy requirement and physical installation arrangement.

Select correction equipment against load and harmonic information.

State input variation, load and required regulated supply.

Identify application, voltage ratio, rating and construction requirements.

Define sources, transfer arrangement and control requirements.

Match fuse class, rating, dimensions and compatible holder.

Specify switching duty, mounting and lockable isolation needs.

Coordinate surge protection with the electrical installation design.

Structural lightning components selected against the protection design.

Earthing conductors, electrodes and connections matched to the specification.

Power distribution conductors and systems with compatible joints and supports.

Specify the motor, load profile, supply and control requirements.

Motor starting equipment selected for load and starting duty.

Control operators and pilot lights matched to function and mounting.

Panel connections and mounting rails with compatible sizes and accessories.

State conduit size, application and compatible PVC fittings.

Distinguish EMT, rigid and other specified steel conduit systems.

Specify flexible construction, environment and termination fittings.

Cable containment channels with the required sections and fittings.

Select finish, width, support spacing and loading requirements.

State box type, dimensions, material and installation conditions.

Match couplings, bends and connectors to the conduit system.

Select for cable diameter, armour and enclosure interface.

Match conductor material and size to the termination and crimping system.

Specify voltage class, insulation and exact cable construction.

Cable fastening and identification selected for the installation environment.

Insulating materials matched to application and required dimensions.

Specify outlet system, faceplate finish and compatible wall boxes.

Check enclosure protection in the actual operating condition.

State cable length, outlet configuration and rated use.

Specify floor construction, services and box dimensions.