- Reaction score
- 55
Hi there,
Im carrying out a commercial tray installation soon and need some guidance as to cable sizing and grouping;
When I refer to table 7.1 in the onsite guide (page 44) it indicates 'allowed installation' in terms of reference method for a given circuit type/cable size/overcurrent protective device type and size.
If I want to install a ring main circuit protected by a 32A Type B or C RCBO wired in 2.5mm/1.5mm PVC/PVC it does not state ref method E (in free air or on perforated cable tray) as an allowed installation method ?? Am I being stupid..
Also where can I gain guidance for cable spacings and grouping for my circuits on this tray installation so, more than anything, I can select the correct width tray?
Thanks again compadraes !
Im carrying out a commercial tray installation soon and need some guidance as to cable sizing and grouping;
When I refer to table 7.1 in the onsite guide (page 44) it indicates 'allowed installation' in terms of reference method for a given circuit type/cable size/overcurrent protective device type and size.
If I want to install a ring main circuit protected by a 32A Type B or C RCBO wired in 2.5mm/1.5mm PVC/PVC it does not state ref method E (in free air or on perforated cable tray) as an allowed installation method ?? Am I being stupid..
Also where can I gain guidance for cable spacings and grouping for my circuits on this tray installation so, more than anything, I can select the correct width tray?
Thanks again compadraes !