P83641 J
Sheet 4 of 6
MOUNTING OPTIONS:
CAUTION:
The following figures show the maximum number of field wires (conductors) that can enter the backbox used
with each mounting option. If these limits are exceeded, there may be insufficient space in the backbox to accommodate the
field wires and stresses from the wires could damage the product.
Although the limits shown for each mounting option comply with the National Electrical Code (NEC), Wheelock recommends
use of the largest backbox option shown and the use of approved stranded field wires, whenever possible, to provide additional
wiring room for easy installation and minimum stress on the product from wiring.
4" SQ. X 2-1/8"
DEEP BACKBOX
APPLIANCE
(2) #8-32 SCREWS
(2) #10-24 SCREWS
SURFACE MOUNTING
A
4
4
4
4
AWG #18 AWG #16 AWG #14 AWG #12
MAXIMUM NUMBER OF CONDUCTORS
APPLIANCE
1/2" CONDUIT
ENTRANCE ON TOP
(4) #8-32 SCREWS
WEATHER RESISTANT
BACKBOX TO BE MOUNTED
ON WALL SURFACE
OUTDOOR MOUNTING
B
4
4
4
4
AWG #18 AWG #16 AWG #14 AWG #12
MAXIMUM NUMBER OF CONDUCTORS
MOUNTING NOTES:
CAUTION:
Check that the installed product will have sufficient clearance and wiring room prior to installing backboxes
and conduit, especially if sheathed multiconductor cable or 3/4" conduit fittings are used.
1.
For weather resistant installation, use outdoor mounting option. Outdoor backbox must be mounted vertically with “TOP”
as marked to allow any moisture or condensation to drain properly through drain holes on bottom of backbox.
2.
All models can be surface mounted to a 4” square by 2-1/8” deep electrical backbox (Figure A) or a weatherproof backbox
(Figure B).
3.
Mounting hardware for each mounting option is supplied. For proper mounting, be sure to use the mounting screws
supplied with the unit.
4.
Conduit entrances to the backbox should be selected to provide sufficient wiring clearance for the installed product.
5.
Use care and proper techniques to position the field wires in the backbox so that they use minimum space and produce
minimum stress on the product. This is especially important for stiff heavy gauge wires with thick insulation or sheathing.
6.
When terminating field wires, do not use more lead length than required. Excess lead length could result in insufficient
wiring space for the signaling appliance.
7.
Do not pass additional wires (used for other than the signaling appliance) through the backbox. Such additional wires could
result in insufficient wiring space for the signaling appliance.
8.
The knock-out opening on the backbox is sized for a ½” conduit and matching connector. Be sure that a proper watertight
conduit fitting is used to connect the backbox for outdoor/severe environment applications.
