Electrical Design For Food Processing Facilities

[Misha322]

I am having similar questions as was posted in a thread back in 2005: thread238-115537

I am working on a design of a new building which is a pilot plant for baby formula on an existing big campus. I am having some explosion proof rooms where they will be handling powder and areas where process equipment will be, where the owner has requested to use cable trays for all the power conductors leading to manufacturing equipment.

I have a couple of questins:

1) For the explosion proof rooms, I need receptacles at 240V, 480V, 208V and 120V that are wet listed and explosion proof, can anyone recommend any?

2) For processing area, with the conductors being exposed in the cable trays and the area being spay down, what shielding would I need to spec the cables with in order to withstand the corrosive materials in the cleaning agents?

 

[alehman]

1. Look at Crouse-Hinds, Appleton or Killark.
2. I'd advise against cable tray in a wash-down area. Besides being hard to clean, you never know what the maintenance staff might decide to use in the power washer. If the cable has to be in the room, put it in conduit.

 

[controlsdude]

I did this job where there was washdown area that had open cable trays.

The wiring had to be type TC since it was washdown and the customer requested that the cabling be bottom fed also. I believe it was uv rated and oil resistant too.

Alpha Wire
XTRA•GUARD®4
EXTRA-PROTECTION, HIGH/LOW
TEMPERATURE TPE JACKET
XTRA•GUARD® 4 is CSA Certified and UL Rated
Type TC 600 Volt and Type PLTC 300 Volt for cable tray
applications and is Pennsylvania Bureau Deep Mine Safety
Approved (P-MWMS-1-85) for mine-wide monitoring systems.

I think you can get away with 300V for control wiring.