nVent Hoffman QTPLB12, QTPCB12 Installation Manual

QUICK TRAY PRO

™

PH 763 422 2211 • hoffmanonline.com

89073571Rev. A P/N 89073570

Components

Straight Sections

The QUICK TRAY PRO™ Cable Tray comes in straight 10 ft. sections that are easily moded and combined to t almost any conguration.

• Smooth, round wires minimize dust buildup and cable snagging.

• T-weld top wire, pre-galvanized steel or black powder nish.

• Large 2 x 4 in. (51 x 102mm) mesh allows cable to be routed into and out of the tray at any point without cutting the tray

• Available with either 2, 4 or 6-in. (51, 102 or 152mm) sidewalls to hold cable in the tray and in a variety of widths to accommodate different numbers of cables

Different cable tray sizes can be joined using the techniques described in this manual to make a truly custom installation using standard parts.

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Catalog Number

Width Depth

in. mm in. mm

QTP2X4 QTP2X4BLK 4 102 2 51

QTP2X6 QTP2X6BLK 6 152 2 51

QTP2X8 QTP2X8BLK 8 203 2 51

QTP2X12 QTP2X12BLK 12 305 2 51

QTP2X16 QTP2X16BLK 16 406 2 51

QTP2X18 QTP2X18BLK 18 457 2 51

QTP2X20 QTP2X20BLK 20 508 2 51

QTP2X22 QTP2X22BLK 22 559 2 51

QTP2X24 QTP2X24BLK 24 610 2 51

QTP4X4 QTP4X4BLK 4 102 4 102

QTP4X6 QTP4X6BLK 6 152 4 102

QTP4X8 QTP4X8BLK 8 203 4 102

QTP4X12 QTP4X12BLK 12 305 4 102

QTP4X16 QTP4X16BLK 16 406 4 102

QTP4X18 QTP4X18BLK 18 457 4 102

QTP4X20 QTP4X20BLK 20 508 4 102

QTP4X22 QTP4X22BLK 22 559 4 102

QTP4X24 QTP4X24BLK 24 610 4 102

QTP6X8 QTP6X8BLK 8 203 6 152

QTP6X12 QTP6X12BLK 12 305 6 152

QTP6X16 QTP6X16BLK 16 406 6 152

QTP6X18 QTP6X18BLK 18 457 6 152

QTP6X20 QTP6X20BLK 20 508 6 152

QTP6X22 QTP6X22BLK 22 559 6 152

QTP6X24 QTP6X24BLK 24 610 6 152

Catalog Number

QTP2X4 QTP2X4BLK

QTP2X6 QTP2X6BLK

QTP2X8 QTP2X8BLK

QTP2X12 QTP2X12BLK

QTP2X16 QTP2X16BLK

QTP2X18 QTP2X18BLK

QTP2X20 QTP2X20BLK

QTP2X22 QTP2X22BLK

QTP2X24 QTP2X24BLK

QTP4X4 QTP4X4BLK

QTP4X6 QTP4X6BLK

QTP4X8 QTP4X8BLK

QTP4X12 QTP4X12BLK

QTP4X16 QTP4X16BLK

QTP4X18 QTP4X18BLK

QTP4X20 QTP4X20BLK

QTP4X22 QTP4X22BLK

QTP4X24 QTP4X24BLK

QTP6X8 QTP6X8BLK

QTP6X12 QTP6X12BLK

QTP6X16 QTP6X16BLK

QTP6X18 QTP6X18BLK

QTP6X20 QTP6X20BLK

QTP6X22 QTP6X22BLK

QTP6X24 QTP6X24BLK

Tray Conguration

87785981

Components

Bolt Cutter and Connectors

Bolt Cutter

Sturdy side action bolt cutter is specially designed to provide a ush cut and help create a protective coating for the new cut.

Splice Kit

Splice Kits are used for bolting turns, bends, and tees; connecting tray sections; and fastening splice bars. Kit includes three-piece staked bolt, washer and nut.

Catalog Number Description

QTPBC Side Action Bolt Cutter

Connectors

Catalog Number Description

QTPBNWK Splice Kit

QTPBNWKBLK Splice Kit (Black)

87785983

Splice Washer

Splice Washers are used with QTPBNWK/ QTPBNWKBLK Splice Kits for bolting turns, bends, and tees; connecting tray sections; and fastening splice bars.

Splice Bars

Splice Bars provide extra support and stability to tray sides when connecting tray sections with splice washers. Universal bars can be cut to t with bolt cutters and bent for use in tees and elbows. Made of zinc-coated steel. Requires QTPSSW3/ QTPSSW3BLK Splice Washers and QTPBNWK/QTPBNWKBLK Splice Kits to fasten to side of tray.

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89074047

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Catalog Number Description

QTPSSW3 Splice Washer

QTPSSW3BLK Splice Washer (Black)

Catalog Number Description

QTPUS10 10 in. Universal Splice Bar

QTPUS10BLK 10 in. Universal Splice Bar, Black

QTP90TKIT T-Connection or 90 Splice Bar

QTP90TKITBLK T-Connection or 90 Splice Bar, Black

Cutting the Tray

Always use the Hoffman side action bolt cutter to cut the QUICK TRAY PRO™ Cable Tray. This cutter allows precision cuts that minimize sharp edges that could snag wire. Its action also helps to protect the new cut from corrosion.

Decide which wires must be cut

1

When cutting for a bend, always review the cutting pattern for the tray size and desired bend before cutting. Red areas on the drawings should be removed.

Cut the rst side wire

2

Starting with the top side wire, position the cutting jaws on the cradle wire. Make the cut at an angle away from the new end.

Cut the bottom wires

4

Turn the tray over and cut the bottom wires from the underside. Always rest the cutting jaws on the cradle wire and cut at an angle away from the new end.

Cut the remaining side wires

3

Cut the remaining side wires, remembering to rest the cutting jaws on the cradle wire and cut at an angle away from the new end.

Make one clean cut to eliminate grinding or touch-up.

That’s it! The cable tray is now ready for installation or for bending to the desired shape.

Creating a 90 Bend

At the desired bend location, cut the wires shown in red for the width of the cable tray.

Cut the side, then the bottom wires

1

Cut all the side wires at the bend location for the tray size.

2”/51 mm

4”/102 mm

6”/152 mm

8”/203 mm

12”/305 mm

Bend the cable tray

2

Turn the tray on the uncut side. Smoothly bend the tray up until the inside edges closest to the uncut side meet.

Secure the bend

3

Fasten at the location shown with QTBNWK/ QTBNWKBLK Splice Kits and QTPSSW3/QTPSSW3BLK Splice Washers indicated for the tray width.

2 in./ 51mm

87785994

16”/406 mm

18”/457 mm

20”/508 mm

22”/559 mm 24”/610 mm

4 in./ 102mm

87785995

6 to 24 in./ 152 to 610mm

87785996

Creating a Large Radius Bend

Large radius bends are formed by removing the outside and bottom wires at the bend location.

Cut the side and bottom wires

1

Remove the wires from the outside and the bottom of every other mesh section at the location of the bend. Follow the cutting pattern shown for the size tray.

2”/51 mm

4”/102 mm

6”/152 mm

8”/203 mm

12”/305 mm

16”/406 mm

18”/457 mm 20”/508 mm

22”/559 mm 24”/610 mm

Bend the cable tray

2

Lay the tray on a flat surface and pull the ends on the uncut side towards each other until the remaining cut sides almost touch at the corners.

Assemble the bends

3

Fasten the inside of the bends together with the hardware shown in the drawings. Hardware can be in any sequence on the inside of the bend

87786180

A or B

A

B

Creating an Elbow

Two cable trays can be joined to create elbows at various angles.

Cut side wires from each tray

1

Follow the cutting pattern for the tray width, removing the portions shown in red.

4”/102 mm

12”/305 mm

87785998

6”/152 mm

8”/152 mm

87785999

87786000

16”/406 mm

18”/457 mm

87786001

87786002

20”/508 mm

22”/559 mm 24”/610 mm

87786004

87786003

87786005

Align the wires of the two trays at the desired angle

2

Fasten the tray as shown. Use two QTPBNWK/QTPBNWKBLK Splice Kits and the QTPSSW3/QTPSSW3BLK Splice Washers indicated for the tray size for each joint.

To form an adjustable angle use one QTPBNWK/QTPBNWKBLK Splice Kit and one QTPSSW3/QTPSSW3BLK Splice Washer indicated for the tray size, centered as shown under Adjustable Elbows. Be sure each splice washer is over two tray bottom wires.

Tray Width

WIDTH 4” 102 mm

WIDTH

8” to 18”

203 to 457 mm

87786006

WIDTH 6” 152 mm

Adjustable Elbows

87786007

Creating a 90 Tee

The T-connection splice bar connects the two sections of QUICK TRAY PRO™ Cable Tray to form a 90 tee.

Cut the side wires

1

Cut the side wires from the tray forming the top of the tee as shown in the cutting guide for the size tray.

4”/102 mm

18”/457 mm

Align the wires of the two trays at the desired angle

2

6”/152 mm

20”/508 mm

8”/203 mm

12”/305 mm

22”/559 mm 24”/610 mm

16”/406 mm

87786010

Fasten the tray as shown. Use two QTPBNWK/QTPBNWKBLK Splice Kits and the QTPSSW3/QTPSSW3BLK Splice Washers indicated for the tray size for each joint.

To form an adjustable angle use one QTPBNWK/QTPBNWKBLK Splice Kit and the QTPSSW3/QTPSSW3BLK Splice Washers indicated for the tray size, centered as shown under Adjustable Elbows. Be sure each splice washer is over two tray bottom wires.

Universal Splice Bars T-Connection Splice Bars

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The Y Junction tee requires cutting both sections of QUICK TRAY PRO™ Cable Tray.

Cut both tray sections

1

Cut and remove the wires indicated for the size tray..

Creating a Y-Junction Tee

4”/102 mm

Bend side wires to 45

2

18”/457 mm

6”/152 mm

20”/508 mm

8”/203 mm

12”/305 mm

22”/559 mm 24”/610 mm

16”/406 mm

87786718

Connect the tray sections

3

Form the Y by connecting the side wires of the two trays as shown. The universal connectors must be cut to 3 in.

Also connect the trays with QTPBNWK/QTPBNWKBLK Splice Kits and QTPSSW3/QTPSSW3BLK Splice Washers. Use one on 4 and 6 in. trays, two on 8 and 12 in. trays, and three on 16 in. and wider trays..

87786013

Reducing QUICK TRAY™ PRO Width

Reduce QUICK TRAY PRO Cable Tray width to connect to smaller tray by cutting side and bottom

Cut the side and bottom wires

1

Cut the wires shown in the cutting guides to make a four inch or eight inch reduction in tray width.

Connect the uncut side of the trays

2

Use a QTPUS10/ QTPUS10BLK Universal Splice Bar with fasteners shown.

Bend the cut wires of each tray

3

Use a QTPUS10 Universal Splice Bar with fasteners on each pair of tray wires.

Changing Levels

QUICK TRAY PRO™ Cable Tray is easily formed to go around obstacles by removing side wires and bending to the desired angle.

Remove side wire sections

1

Remove every other side wire section at the bend location from both sides of the tray. The number of side wire sections removed determines the radius of the bend.

Bend the tray

2

Bend the tray smoothly up or down to go around the obstruction.

QUICK TRAY PRO™ Fill Calculations

Reduce QUICK TRAY PRO Cable Tray width to connect to smaller tray by cutting side and bottom

Wire Mesh Cable Tray Fill Ratio

Fill ratio = Cross section of cable Cross section of tray

According to NEC 392.9 (B), when using ventilated tray with multiconductor control cable, the sum of the crosssectional areas shall not exceed 50 percent of the interior cross section of the tray.

Catalog Number

QTP2X4 QTP2X4BLK 2 4 8 145

QTP2X6 QTP2X6BLK 2 6 12 219

QTP2X8 QTP2X8BLK 2 8 16 293

QTP2X12 QTP2X12BLK 2 12 24 437

QTP2X16 QTP2X16BLK 2 16 32 589

QTP2X18 QTP2X18BLK 2 18 36 663

QTP2X20 QTP2X20BLK 2 20 40 737

QTP2X22 QTP2X22BLK 2 22 44 811

QTP2X24 QTP2X24BLK 2 24 48 885

QTP4X4 QTP4X4BLK 4 4 16 275

QTP4X6 QTP4X6BLK 4 6 24 406

QTP4X8 QTP4X8BLK 4 8 32 557

QTP4X12 QTP4X12BLK 4 12 48 832

QTP4X16 QTP4X16BLK 4 16 64 1122

QTP4X18 QTP4X18BLK 4 18 72 1263

QTP4X20 QTP4X20BLK 4 20 80 1404

QTP4X22 QTP4X22BLK 4 22 88 1545

QTP4X24 QTP4X24BLK 4 24 96 1686

QTP6X8 QTP6X8BLK 6 8 48 836

QTP6X12 QTP6X12BLK 6 12 72 1249

QTP6X16 QTP6X16BLK 6 16 96 1682

QTP6X18 QTP6X18BLK 6 18 108 1894

QTP6X20 QTP6X20BLK 6 20 120 2106

QTP6X22 QTP6X22BLK 6 22 132 2310

QTP6X24 QTP6X24BLK 6 24 144 2529

The QUICK TRAY PRO Cable Tray Fill Table below shows the number of cables and the load in lbf/lineal foot developed by typical 4 pair and 6 pair cable weighing 20 lb/kft and 40 lb/kft, respectively. While this table is a useful guide, actual loads must be calculated using the cable specied.

Use the following formula to calculate the number of cables that will result in a particular ll ratio, where:

A= Inside tray area, in in.

2

D= Cable diameter, in inches F= Fill ratio in % N= Number of cables The formula is N= ( F ) * ( A

)

100 [(D/2)2 * Π]

QUICK TRAY PRO Cable Tray Fill Table at 50% Fill

Height Width Area CAT Cab Type (4 pair), .19

in. in. in.

2

in. diameter

No. Cables at 50% ll

Supporting QUICK TRAY PRO Cable Tray

Straight section supports installed at 6-foot (1.5m) centers are typical. Supports should be placed within 24 in. (610mm) of a splice on straight sections, and the span between supports should not exceed the length of tray. Additional supports will be required around bends and when the cable tray level changes.

Notes

nVent Hoffman QTPLB12, QTPCB12 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual