16130.doc

07-733 07-743

SECTION 16130 - BOXES

PART 1 GENERAL

1.1

COORDINATION

A.

It is the Contractor's responsibility to verify door swings on the job before roughing-in for switches at doors. Locate on lock side of door.

1.2

CIRCUIT IDENTIFICATION

A.

Each junction box shall have all circuit numbers in that particular box noted on the cover. On exposed galvanized boxes with galvanized covers, such as above accessible ceilings and in unfinished spaces, the circuit numbers shall be on the outside of the cover. On flush boxes in finished spaces the numbers shall be noted on the inside of the cover.

1.3

SUBMITTALS

A.

Provide manufacturer’s literature on all special or custom boxes.

PART 2 PRODUCTS

2.1

MATERIALS

A.

Standard Boxes

1.

Zinc-coated or cadmium-plated Code gauge sheet steel, minimum depth 2-1/8" except at structural restrictions. Sizes to be in accord with the National Electrical Code.

2.

Boxes for metallic raceways, 4-inch by 4-inch nominal size and smaller shall be of the cast-metal hub type when located in normally wet locations, when surface mounted on outside of exterior surfaces, when located in hazardous areas, or when installed exposed up to 7 feet above interior floors and walkways.

3.

Junction or pull boxes which are less than 150 cubic inches in size, shall be the same as outlet boxes.

B. Cast Boxes shall have threaded hubs.

C.

Octagon or square boxes shall be not less than 4" size.

D. Note any special light fixture mounting requirements and provide for same.

E.

Boxes in masonry walls shall be set in the corner of the masonry unit nearest height and location requirements. Outlet boxes shall consist of a 4" square box with a 2" x 4" rectangular cut tile wall extension cover. "Thru-Wall" boxes are not acceptable.

F. Special boxes as required to be used for special systems as specified, noted on the drawings or as required.

G.

Covers on flush boxes in finished spaces shall have cover plates matching adjacent device plates.

1. Plaster rings shall be provided on all outlet boxes in plaster walls or ceilings and elsewhere as required.

PART 3 EXECUTION

3.1

INSTALLATION

A.

All metallic boxes to be effectively grounded.

B.

Check other drawings, shop drawings, etc., to determine that switches and outlets are not concealed behind cabinet work, doors, heating units, etc.

C.

It is this Contractor's responsibility to see that boxes in walls are straight, level, plumb and flush with finished surfaces. Use box extensions where box is set too deep.

D.

Open junction boxes are not acceptable. All boxes shall have an appropriate cover for the location.

E.

Mounting heights from finished floor to center of outlet.

1.

General wall switches - 4'-0" (unless otherwise noted on the drawings).

2.

Convenience outlets - 15" (except at cabinets, counters, etc., or as noted on the drawings).

3.

Special systems devices - as required and/or as noted on drawings.

3.2

NOISE TRANSMISSION

A.

Where boxes are mounted in a common wall, they shall, where possible, be offset horizontally so that they are not mounted back-to-back. Where it is not practical to offset boxes, with permission they may be mounted back-to-back with a minimum clearance of 1/4" between boxes and with a sheet of high density fiberglass between boxes. Do not nipple boxes mounted back-to-back.

END OF SECTION 16130

RML AUTOCLAVE REPLACEMENT ( NIH-NIAID RML ( HAMILTON, MT

BOXES 16130-2