GILBARCO VEEDER-ROOT Encore 300 Series, Руководство по установке

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Installation
Page 66 MDE-3985L Encore® Installation Manual · May 2006
Figure 3-32: Lighted Canopy Conduit and Wiring
1
Before proceeding, determine that seal-Off Y fitting (A) has been installed according to NEC
Article 514-7, this manual and fitting manufacturers’ instructions. Fitting must be potted to
complete installation.
2
Using only Listed rigid conduit and explosion proof fittings, conduit tee (B) or Class 1,
Division 1 hazardous location rated junction box (option not shown; see MDE-3802 Encore
and Eclipse Site Preparation Manual for references on junction box sizing) may be installed
above Seal-Off fitting.
3
Tee or J-box allows branch off of power wires for canopy.
4
Canopy vertical conduit (D) is run inside side column as shown. Conduit MUST be potted at
height of 48-inches or higher, with potting material poured to a depth equal to or greater that
the trade size of the conduit, and in accord with NFPA 70 and NEC Article 514-7. See potting
compound manufacturers instructions for details.
5
A UL Listed metallic conduit capped bushing MUST be slipped over wires and installed at top
of conduit after potting.
6
Run canopy wires (C) up column and across upper housing to knockout in center of top cover,
protecting wiring from sheet metal edges.
7
Lighted Canopy must be installed onto unit in accord with UL and NFPA requirements. This
will require but not be limited to providing a potted nipple for wires going from upper housing
into canopy, and appropriate Listed nuts and washers.
(A)
(D)
Canopy
conduit potted
above 48
inches
(C)
(B)
Contractor or canopy
manufacturer must provide
Listed fittings to run wires from
upper housing into canopy, for
example; potted nipple,
washers and conduit nuts top
and bottom. These must be
installed according to NFPA 70,
NEC Article 514-7 and UL87.