Xingyang junction box featrue is professional

Monday, 02 July 2018

The maximum current values for terminal strips used for low-voltage circuits (signalling units) with a T6 temperatureclass and maximum ambient temperature of +60C or T4 and maximum ambient temperature +65C and +85C, areas follows:- 1A for Ex e circuit…

The maximum current values for terminal strips used for low-voltage circuits (signalling units) with a T6 temperature class and maximum ambient temperature of +60°C or T4 and maximum ambient temperature +65°C and +85°C, are as follows:
- 1A for Ex e circuits;
- 100mA for Ex ia circuits.
The values given in the tables on the coming pages refer to the maximum number of conductors allowed for a conductor with a given cross-sectional area and a given maximum current. All incoming wires and active internal links (made by wires) count as wires. Earth connections (i.e. passive connections) do not count.
When DIN/Omega rails are installed on the internal mounting plate (instead of using the relevant mounting plate fastening holes), the number of terminals may be slightly less than the number given in the tables.
Other types of terminals can be used up to the space limit of the box. Whatever the case, all terminals used shall be ATEX and/or IEC Ex certified. Size 35mm2 terminals can be used for conductors with a cross-sectional area of 25mm2.
The maximum number of terminals and maximum number of rows given in the tables is an indicative value: you must take into account the cable entries on the sides of the boxes. The internal overall dimensions of cable glands/lock nuts and the overall dimensions of conductors must be taken into consideration to allow for wiring.
In some cases, it may be necessary to reduce the number of terminals or the number of rows.

junction box installation
junction box lowes
electrical junction box types
electrical junction box code
junction box wiring
junction box home depot
what is a junction box used for
junction box price