137189 / 8146619300
2016-11-10·BA00·III·en·06
Product Selection, Project Engineering and Modification
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Terminal Boxes
Series 8146/1, Series 8146/2
Critical (inscribed area of the table)
The part of the table shows the maximum permissible number of conductors considering the
cross-sections of the conductors and the continuous current loading. When using this table,
simultaneous factors and load factors may be accounted for. Mixed arrangements with
circuits of different cross-sections and currents are possible; in this case the proportion of
the loading from the individual circuits should be taken into account. If a terminal box is fully
loaded according to the criteria in the dark part of the table, then any number of circuits from
the non-critical (light part of the table) may be added.
Dangerous (dark area of the table)
Terminal boxes which are designed according to this area require an additional
temperature-rise test.
Example calculation (general):
Ensure that operating temperatures of the terminal box and the selected electric lines
(in particular low temperatures) match.
5.4.2 Additional Terminals
Fitting of additional terminals by R. STAHL
Forward the following information to R. STAHL:
- Type
- Manufacturer
- Data sheet
- Quantity
- Enclosure size
R. STAHL
• will check whether the terminal type, quantity, cross-section and current load correspond
with the approval
• will check whether the enclosure size, drilled holes and through holes are sufficient
• will install the terminals
• will, if necessary, create required drilled holes and fit required cable entries
• will update the order documentation
• will carry out a routine test
• will, if necessary, fit a new type plate if the technical data, such as current or conductor
cross-section, has changed.
Cross-section [mm
2
]
Current [A]
Number of conductors
Proportion
2.5
20
8 (of 20)
= 40 %
4
25
6 (of 22)
= 27 %
6
35
4 (of 17)
= 24 %
= 91 % < 100 %
