Detailed steps for horizontal installation of perforated cable trays

Detailed steps for horizontal installation of perforated cable trays

https://www.heshenggr.com/metal-perforated-cable-tray/

Detailed steps for horizontal installation of perforated cable trays

Perforated cable trays horizontal installation bracket spacing of 1.5m-2m, vertical installation bracket spacing is not more than 2m. non-galvanized cable tray between the ends of the connecting plate across the copper core grounding wire, grounding hole should be cleared insulation coating. For vibration places, spring ring should be installed at the connection of the grounding part. The spacing between strong and weak power cable tray is not less than 200mm. metal cable containment should be left with expansion joints 20-30mm every 50m. support hanger materials, metal cable duct hanger good use of expansion bolts fixed. The bracket of the vertical steel cable tray shall be reliably installed.

1. Metal cable trough and their brackets and the introduction or lead to the metal cable conduit shall be grounded or zero reliable, the full length and its brackets should be no less than 2 and grounding or zeroing trunk connection.

2. Non-galvanized cable tray between the ends of the connecting plate across the copper core grounding wire, grounding wire allowable load area of not less than 4mm.

3. when the design does not require, the ventilated cable tray horizontal installation of the bracket (strut channel, cable tray accessories) spacing of 1.5-3m; vertical installation of the bracket spacing is not more than 2m. such as from the ceiling construction on the use of expansion screws fixed rebar fixed from the wall construction to be fixed with a tripod.

4. galvanized perforated cable tray between the ends of the connecting plate does not span the grounding wire, but the connecting plate at both ends of not less than two anti-loosening nuts or anti-loosening washers connection fixing bolts or other cable accessories.


Post time: Nov-14-2022
-->