B-Line Eaton series imperial cable tray and ladder, 4" Height, 31.692" Length, 6" Width, Series 2-5 vertical inside bend, Aluminum, 30° Angle, 48" Rad

Order Eaton B-Line 4A-06-30VI48. Reading the number: 4A is the 4 inch aluminum rail, 06 is the 6 inch tray width, 30VI is the 30 degree vertical inside bend, and 48 is the 48 inch radius. Distributors quoting against a tray schedule can match those four elements straight off the drawing.

Direction of the turn relative to the cable. A vertical inside bend, like the 4A-06-30VI48, turns the tray so the cables run on the inside of the curve, which is what you use when the run rises going away from you or drops toward you and the cable stays cradled in the tray. A vertical outside bend turns the other way, with the cable on the outside radius. Get the two mixed up and the fitting will not line up with the direction of your elevation change, so confirm which way the run breaks before ordering. This one is a 30 degree change of elevation on a 48 inch radius.

The 4A-06-30VI48 is the bend fitting itself. Splice plates, connection hardware, and any hanger or trapeze support at the fitting are separate line items on a B-Line tray order, so include them in your takeoff. Match the splice plates to the same 4 inch aluminum series so the rail profile and bolt pattern line up.

6.918 lb for the 4A-06-30VI48. Aluminum construction keeps it light enough for one electrician to handle overhead on a lift or ladder, which is a large part of why aluminum tray gets specified over steel on long elevated runs. It measures 31.692 inches along its length.

Weight and corrosion. The 4A-06-30VI48 is aluminum, so it weighs 6.918 lb where a comparable steel fitting would be noticeably heavier, and aluminum resists corrosion without a coating, which suits damp, coastal, or wash-down areas and outdoor runs. Steel tray is the choice where you need higher load capacity per span or where the spec calls for a steel system. Do not mix materials in one run without addressing the connection and bonding.