212728 / 815060300180
2011-11-18·IO00·III·en·01
Safety Instructions
3
Terminal Boxes for I.S. Circuits
8150/2
4 Safety Instructions
The terminal boxes must be used only for their intended purpose. Incorrect usage
invalidates our warranty provision. Any modifications need to done within the guidelines
given in this documentation.
These terminal boxes are installed with blue terminals which clearly identify the I.S.
circuits in order to prevent unintentional interference with non-intrinsically safe circuits
during testing and service.
CAUTION:
No conduit seals are required. Exception see NEC 504-70
Use wiring methods for the location with the associate cable glands or conduit hubs.
Reference NEC, NFPA 70 Article 504-20.
Keep enclosures clean and undamaged while in service.
4.1 Entry hardware
The following entry hardware can be used to insert cables and conduits into enclosures:
X increased safety „e“ conduit hubs Series 8166/11-0.-NE (see section 11.1) or
X for cable installation any listed cable gland for hazardous (classified) location
To close up unused openings, use listed close-up plugs. (see section 11.2)
4.2 Additional entry holes
If additional entry holes are required, e.g. for installing additional cable glands,
breather glands, conduit hubs or close-up plugs, the following has to be considered:
Additional through holes can be punched.
While punching please make sure that the surfaces remain even.
When determining the position of the through holes, please consider the correct
clearances.
Choose the applicable through-hole diameter.
Ensure gaskets are not damaged.
WARNING
Installation and maintenance of this product should only be performed by skilled
and experienced personnel in accordance with the National Electrical Code
(NFPA 70 - NEC) or the Canadian Electrical Code (CEC), respectively, and
applicable local code regulations.
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