SOOW Cord in Pylon legs

Status
Not open for further replies.
S

sharan

Senior Member
Can you use SOOW cord (in lieu of rigid conduit) in pylon legs on a bridge for exterior lighting?
 
In general cord cannot be used in place of chapter 3 wiring methods.

There are exceptions to that, what are the specifics of the installation?

Why do you need to use cord?
 
sharan said:
Can you use SOOW cord (in lieu of rigid conduit) in pylon legs on a bridge for exterior lighting?
Click to expand...

225.10 Wiring on Buildings (or Other Structures). The
installation of outside wiring on surfaces of buildings (or
other structures) shall be permitted for circuits of not over
1000 volts, nominal, as open wiring on insulators, as multiconductor
cable, as Type MC cable, as Type UF cable, as
Type MI cable, as messenger-supported wiring, in rigid
metal conduit (RMC), in intermediate metal conduit (IMC),
in rigid polyvinyl chloride (PVC) conduit, in reinforced
thermosetting resin conduit (RTRC), in cable trays, as
cablebus, in wireways, in auxiliary gutters, in electrical metallic
tubing (EMT), in flexible metal conduit (FMC), in
liquidtight flexible metal conduit (LFMC), in liquidtight
flexible nonmetallic conduit (LFNC), and in busways. Circuits
of over 1000 volts, nominal, shall be installed as provided
in 300.37.

Cables are routinely used inside metal poles. Do your pylons meet that description?
 
This is inside a pylon (not exposed). Reason is to avoid maintenance problems with rigid conduit inside the pylon.
 
fmtjfw said:
225.10 Wiring on Buildings (or Other Structures). The
installation of outside wiring on surfaces of buildings (or
other structures) shall be permitted for circuits of not over
1000 volts, nominal, as open wiring on insulators, as multiconductor
cable, as Type MC cable, as Type UF cable, as
Type MI cable, as messenger-supported wiring, in rigid
metal conduit (RMC), in intermediate metal conduit (IMC),
in rigid polyvinyl chloride (PVC) conduit, in reinforced
thermosetting resin conduit (RTRC), in cable trays, as
cablebus, in wireways, in auxiliary gutters, in electrical metallic
tubing (EMT), in flexible metal conduit (FMC), in
liquidtight flexible metal conduit (LFMC), in liquidtight
flexible nonmetallic conduit (LFNC), and in busways. Circuits
of over 1000 volts, nominal, shall be installed as provided
in 300.37.

Cables are routinely used inside metal poles. Do your pylons meet that description?
Click to expand...

It is my opinion that 225.10 has absolutely nothing to do with the flexible cords and cables found in article 400. That section is referencing cables such as NM, AC, MC etc. in other words chapter 3 wiring methods.


Also what cables are you routinely finding in poles.
 
There are other wiring methods that are far more suitable. SOOW and similar is restricted from general use as its not suitable for long term use (it can dry out and crack).
I would recommend multicondutor tray cable, or a PVC jacketed MC cable. Both are listed for direct burial.
 
tom baker said:
There are other wiring methods that are far more suitable. SOOW and similar is restricted from general use as its not suitable for long term use (it can dry out and crack).
I would recommend multicondutor tray cable, or a PVC jacketed MC cable. Both are listed for direct burial.
Click to expand...
I don't think tray cable would be code compliant for this application.
 
Status
Not open for further replies.
Top