Splitters, Junction, Pull Boxes and Cabinets



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tarix07.11.2018
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#78781

NL Master Specification Guide

for Public Funded Buildings

Revised 2017/05/31 Section 26 05 31 - Splitters, Junction, Pull Boxes and Cabinets Page of

Part 1General

1.1Realted Sections

.1Section 01 33 00 – Submittal Procedures.

.2Section 01 91 13 – General Commissioning (Cx) Requirements.

.3Section 26 05 00 – Common Work Results – Electrical.

1.2SUBMITTALS

.1Submit shop drawings and product data for cabinets.

.2Provide manufacturer’s printed product literature, specifications and datasheet and include product characteristics, performance criteria, physical size, finish and limitations.

.3Provide drawings stamped and signed by professional engineer registered or licensed in the Province of Newfoundland and Labrador, Canada.

Part 2Products

2.1Splitters

.1Sheet metal enclosure, welded corners and formed hinged cover suitable for locking in closed position.

.2 Main and branch lugs to match required size and number of incoming and outgoing conductors as indicated.

.3At least three spare terminals on each set of lugs in splitters less than 400 A.

2.2Junction and Pull Boxes

.1Welded steel construction with screw-on flat covers for surface mounting.

.2Covers with 25 mm minimum extension all around, for flush-mounted pull and junction boxes.

2.3Cabinets

.1Type E: sheet steel, hinged door and return flange overlapping sides, handle, lock and catch, for surface mounting.

.2Type T: sheet steel cabinet, with hinged door, latch, lock, 2 keys, containing 19 mm fir plywood backboard for surface flush mounting.

Part 3Execution

3.1Splitter Installation

.1Install splitters and mount plumb, true and square to the building lines.

.2Extend splitters full length of equipment arrangement except where indicated otherwise.

3.2Junction, Pull Boxes and Cabinets Installation

.1Install pull boxes in inconspicuous but accessible locations.

.2Mount cabinets with top not higher than 2 m above finished floor.

.3Install terminal block as indicated in Type T cabinets.

.4Only main junction and pull boxes are indicated. Install pull boxes so as not to exceed 30 m of conduit run between pull boxes.

.5Ensure all electrical boxes above drywall ceilings are accessible via a properly sized access door installed directly below the box in drywall ceilings. Temporary removal of electrical light fixtures are not considered safe access to above ceiling electrical boxes and shall not be permitted.

3.3Identification

.1Provide equipment identification in accordance with Section 26 05 00 – Common Work Results - Electrical.

.2Install size 2 identification labels indicating system name voltage and phase.


END OF SECTION
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