Washer, Electrical Equipment Bond WEEB · Washer, Electrical Equipment Bond WEEB ... A large flat...

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WEEB-DPF

WEEBL-8.0

For DP&W PowerGrid System Only

WEEB-WMC

Washer, Electrical Equipment Bond

WEEBPatent Pending

INSTALLATION INSTRUCTIONS

Wiley Electronics LLC. 2006-2010 All Rights Reserved

Products are tested to UL 467UL standard for safety grounding and bonding equipment

Document Number 104-0404-000054-000

3098177

Please read carefully before installing.

Wiley Electronics recommends that sufficient details of theinstallation be submitted to the AHJ for approval before any work

is started.

OK

Not enough clearance!

WEEB COMPATIBILITY

OK

The WEEB family of products can be used to bond anodized aluminum, galvanized steel, steel and other electrically conductive metal structures.


Standard Top Down Clamps

The WEEBs used for bonding PV modules to the mounting rails are compatible with various cross-sections of module frames. The following are examples of module frames that are compatible. Notice that the WEEB teeth are positioned completely under the edge of the module frame.

OK

The following is an example of a module frame that is incompatible with theWEEB-DPF. Lipped solar modules mounted with inverted U-shaped clamps do not have enough clearance to fit the WEEB-DPF.

X

Shown here is an example of a lip that will prevent theWEEB teeth from properly penetrating the module frame.This type of frame is not compatible with the WEEB.

WEEB COMPATIBILITYThe following are examples of module frames that are incompatible with the WEEB-DPF.

X

X

Important Note: Inspect each module frame used with a WEEB to ensure that the bottom mounting face of the frame is flat, and that there are no hinderances to embedding WEEB teeth. Do not use a module with a frame that preventsthe WEEB teeth from embedding fully.


Shown here is an example of a groove that will prevent theWEEB teeth from properly penetrating the module frame.This type of frame is not compatible with the WEEB.

THAN 1.5mmNO THINNER

NO GREATER THAN 8.5mmNO LESS THAN 3mm

WEEB-DPF and Boxed Module Frames

Certain module frames do not have enough structural strength to withstandthe force required to embed a WEEB. These frames will deform and thereforenot allow sufficient penetration of the WEEB teeth. The general requirementsfor minimum module frame thickness of "boxed" type module frames areillustrated below.


Use WEEBL-8.0 to connect system to equipment ground conductor.

Use WEEB-DPF to bond module frames to the mounting rail.

SYSTEM OVERVIEW


Important Notes:

The NEC section 690.43 states, "Exposed non-current carrying 1.metal parts of module frames, equipment, and conductor enclosures shall be grounded in accordance with 250.134 or 250.136(A) regardless of voltage."Use general purpose anti-seize compound on fastener threads 2.when installing WEEBs.WEEBs are intended for SINGLE USE ONLY. Functionality will 3.not be guaranteed if reused.

Use WEEB-WMC to bond ballast trays and spacer bars to module mounting rail.

Use the WEEB-WMC to bond ballast tray to mounting rail.

Use the WEEB-WMC to bond spacer bar to mounting rail.


Ballast Trays and Spacer Bars

Use one WEEB-WMC between each ballast tray and mounting rail. Use at least one WMC to bond each spacer bar to the mounting rail. Multiple WEEBs may need to be used on a spacer bar to create a bond across a rail splice, or to bond each row of rails.

1

Important Note: A large flat washer must be used under every flange nut that secures a WEEB-WMC to the mounting rail. The washer must be at least 0.080" thick and wide enough to cover the WEEB teeth.

Each East-West row of railsmust be bonded to the rows North and South of it.Requires at least two WEEBs per spacer bar.

Each rail splice must bebonded with two WEEBs.

Each spacer bar mustbe bonded to at leastone mounting rail with at least one WEEB.


Ballast Trays and Spacer Bars

2 When position is finalized, tightenfasteners to at least 15 ft-lbs / 20.5 N-m, using general purpose anti-seize compound on threads.

Flange Nut

DP&W Mid Clamp

WEEB-DPF

Bolt

Assemble end clamp tomanufacturer's specifications.

Slightly lift solar module andslide the teeth of the WEEB-DPFunder the module. The edge of theWEEB will automatically align whenboth modules are correctly installed.

4

WEEB-DPF ASSEMBLY3


Pre-assemble WEEB-DPF to mid-clamp as shown. Pre-assembling WEEB-DPF will contain the small individual parts, reducing the possibility of losing parts during installation.

When position of solar modules is finalized, tighten fasteners to at least 15 ft-lb / 20.5 N-m, using general purpose anti-seize on threads.

Assemble end clamp tomanufacturer's specification.

5

6


Important note:WEEBs are for SINGLE USE ONLY! Do not torque fasteners down if position of solar modules is not finalized. Only slightly tighten fasteners to keep modules in place.

WEEB-DPF LAYOUTEVEN NUMBER OF MODULES IN COLUMN

ODD NUMBER OF MODULES IN COLUMN

X DENOTES PLACES TO INSTALL WEEB-DPFC = ColumnR = Row

Important Note: When replacing a single faulty module, also remove the adjacent module which contacts the same WEEBs as the faulty module. This will ensure that there are never ungrounded modules in the array.


C X R = 1 X 4WEEB-DPF NEEDED = C X R = 1 X 4 = 4

C X R = 5 X 1WEEB-DPF NEEDED = [C+1] X R = [5+1] X 1 = 6

X DENOTES PLACES TO INSTALL WEEB-DPF

x x

x xx

xx x

x

x

Assemble WEEBL-8.0 assembly withthe WEEB teeth pointing toward the rail.Tighten fasteners to 10 ft-lb / 13.5 N-m using general purpose anti-seize on threads.

7WEEBLUG ASSEMBLY


Important Notes: The WEEB-8.0 that sits under the lug is for SINGLE USE ONLY! Ensure position is correct before tightening.

WEEBL-8.0 may be used with a maximum equipment ground wire of 6 AWG.

Equipment ground conductor

Lay in equipment groundconductor and tighten boltto 7 ft-lb / 10 N-m.

8


EQUIPMENT GROUND CONNECTION

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