Morrison, Currents and Reff Raceways - Knoll

Morrison, Currents and Reff Raceways 

2+2 3+3 


Knoll 

September 6, 2007 

1


Morrison, Currents and Reff Raceways. 

More. Better. 

Knoll pioneered 2+2, the office systems raceway with the right balance of 

convenience power and protected power for computer-intensive offices. 

2+2 delivers twice as much “clean” computer power as single-isolated 

circuit systems. 

Now Knoll offers two powerful alternatives to 2+2: high-performance 3+3 

and optional 4 . 4 . 2 raceways for Morrison, Currents and Reff. 

3+3 delivers six circuits from a single power supply: three convenience 

circuits and three separate, protected circuits — enough power for 60 or 

more duplex outlets. This can significantly reduce the cost of installation 

by reducing the number of power infeeds. 

Like 2+2, 3+3 features separate grounds and heavy-duty, 10-gauge 

neutrals to protect sensitive electronic equipment. 4 . 4 . 2 is a four-circuit, 

10-wire system for special applications requiring an independent neutral 

for each circuit. 

2+2, 3+3 and 4 . 4 . 2 components have been designed specifically for 

Morrison panels, Morrison Network desks, Reff panels and Beltway, and 

Currents service walls and desks. 



2


Simple Components 

Power rails 

Power rails for Morrison and Reff 

correspond to panel and desk widths. The 

power rail accepts one or two duplex 

outlets on each face. Multiple outlet power 

rails for 48” and wider panels accept four 

outlets on each side. Power rails are also 

available for the Currents service wall base. 

Each end of the power rail has branching 

capability for connectors or jumpers to 

adjacent power rails. 

Outlets 

Duplex outlets are preconfigured to access 

any one of the six circuits. Outlets on 

protected circuits can be ordered with an 

orange face and a black triangle or a black 

face and an orange triangle to indicate 

special circuits. Surge suppressor outlets 

are available to protect an entire circuit. 

Duplex outlets are interchangeable among 

Morrison, Reff and Currents. 

Morrison Access ceiling infeed passes 

through one side of a vertical raceway and 

connects to the end of a power rail in the 

adjacent panel base. 

Currents power infeed snaps into base of 

the outlet module (or end of the base 

raceway power rail) without displacing an 

outlet position. 

Reff mounting tabs 

old 

Morrison 

mounting 

clips 

Outlet locations 

Outlet modules for Currents 

Outlet modules for Currents service walls 

accept one or two outlets on each face, 

above or below worksurface height. 

Distribution blocks provide branching 

capability for up to four jumpers (or one 

infeed and three jumpers). 

Infeeds 

The modular infeed engages into the power 

rail at any outlet position. The elbow may be 

changed from right to left and includes 

watertight conduit to connect to the 

building power supply. 

The hardwire infeed kit includes a New York 

City code-approved box that mounts within 

the panel base to make a hardwire 

connection to power rails on either side of 

the power entry. 

Power connectors and jumpers 

Power connectors and jumpers snap into 

either port at the end of a power rail. 

Connectors join power in adjacent panels or 

desks; jumpers pass through intermediate 

panels that have no outlets. Connectors 

are also available to link Morrison panels 

with powered Network desks, to connect 

Reff beltway with the panel base and 

Currents service wall with attached panels 

or desks. 

Outlet locations 

x 

Distribution blocks 

x 



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Typical Workstation Cluster: Morrison or Reff Panels 

Plan view 

Power rail 

Duplex outlet 

Power infeed 

Power connector 

Jumper 

Power connectors join 

adjacent power rails. 

Power rails accept duplex 

outlets on each side and two 

jumpers or power connectors 

on each end. 

Jumpers join rails on 

either side of a panel 

without outlets. 

Power infeed connects to 

building power supply at 

any outlet position. 



4

x 

x 

x 

x 


C u r r e n t s 

Desk-height 

outlet module 

Base power rail 

Jumper cable 

Infeed 

M o r r i s o n A c c e s s 

M o r r i s o n N e t w o r k 

Vertical raceway 

power rail accepts 

four duplex outlets 

each side. 

Desk support power rail 

Power connector 

Panel-to-desk connector 

R e f f B e l t w a y 

Beltway power 

connectors 

Beltway power rail 

accepts two or four 

duplex outlets at 

worksurface height. 



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Technical Specifications 

A B X Y 

2 + 2 

Four 20-amp circuits, nondirectional 8-wire configuration: four hots, two 

neutrals (10 gauge, 35A rated), two grounds. 

Black 

A 

Y 

Tan 

Power rails and outlet modules: steel with molded polypropylene 

distribution blocks. 

Red 

B 

X 

Pink 

Connectors/jumpers: flexible steel conduit with strain relief. 

Outlets: molded polycarbonate, preconfigured duplex on any one of four 

circuits, indicated as A, B (black), X, Y (black, orange, or black with 

orange triangle). 

Infeed: molded plastic shroud, watertight conduit with 6’ whip, 

snap-in fit at any outlet position in rail or into outlet module distribution 

block; or hardwire box in center of panel base raceway. 

White/ 

Black 

Green 

N1 

G1 

2+2 Wiring Diagram 

N2 

G2 

White/ 

Red 

Green/ 

Yellow 

Typical circuiting, cluster of eight workstations: 8 convenience duplexes 

on each circuit A, B; four computer duplexes on each 

circuit X, Y. 

A B C X Y Z 

3 + 3 

Six 20-amp circuits, nondirectional 10-wire configuration: six hots, two 

neutrals (10 gauge, 35A rated), two grounds. 

Black 

A 

Z 

Orange 



Red 

B 

Y 

Tan 


Blue 

C 

X 

Pink 

Outlets: molded polycarbonate, preconfigured duplex on any one of six 

circuits, indicated as A, B, C (black), 

X, Y, Z (black, orange, or black with orange triangle). 

White/ 

Black 

N1 

N2 

White/ 

Red 



block; or hardwire box in center of panel base raceway. 

Green 

G1 

3+3 Wiring Diagram 

G2 

Green/ 

Yellow 

Typical circuiting, cluster of 12 workstations: eight convenience duplexes 

on each circuit A, B, C; four computer duplexes on each circuit X, Y, Z. 

4 . 4 . 2 

Four 20-amp circuits, nondirectional 10 wire configuration: four hots, four 

neutrals (12 gauge), two grounds. 



Black 

1 

1 2 3 4 

4 

Pink 


Red 

2 

3 

Blue 

Outlets: molded polycarbonate, preconfigured duplex on any one of four 

circuits, indicated as 1, 2, 3, 4 (black or black with orange triangle). 

White/ 

Black 

N1 

N4 

White/ 

Purple 



block (Currents); or hardwire box in center of panel base raceway. 

White/ 

Red 

N2 

N3 

White/ 

Blue 

Typical circuiting, cluster of eight workstations: 8 convenience duplexes 

on each circuit 1, 2; four computer duplexes on each circuit 3, 4. 

Green 

G1 

4 . 4 . 2 Wiring Diagram 

G2 

Green/ 

Yellow 

Note: Outlets on circuits with dedicated ground must be specified orange face with black triangle or black face with orange triangle. 

Approvals: Morrison, Currents and Reff systems raceways are UL listed, CSA approved and comply with UL 1286 and CSA 203.1 electrical and mechanical safety 

standards. 

Morrison / Currents UL file no. E76704 CSA FIle no. LR62867 Reff UL file no. E76558 CSA FIle no. LR62867 

2+2, 3+3 and 4. 4.2 components are also listed under UL file no. E30326 and CSA no. LR55923. 



© Knoll, Inc. 2007 knoll.com 

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Morrison, Currents and Reff Raceways - Knoll

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