Sheet 36/77Products / Electrical and instrumentation / Cable trayRev
Electrical and instrumentation · catalogue item
Cable tray
Rigid ladder or trough structure that supports power and instrument cables along a route.
In short
Rigid ladder or trough structure that supports power and instrument cables along a route. JJ Projects sources it to the specification the buyer names. Typical reference, standards: NEMA VE 1; NEC (NFPA 70) Article 392.
Specification references
Typical references only. The governing specification is the one on your purchase order or datasheet.
| Property | Typical reference |
|---|---|
| Standards | NEMA VE 1; NEC (NFPA 70) Article 392 |
| Types | Ladder and solid-bottom trough |
| Materials | Galvanized steel, aluminum or stainless steel |
| Accessories | Fittings, covers, splice plates and supports |
Specification references describe what the order names, not a certification held by JJ Projects.
Electrical and instrumentation
Typical uses
- 01Routing power and instrument cables along pipe racks and buildings
- 02Cable runs in substations, control rooms and process units
- 03Supporting cable between equipment and junction boxes
- 04Outdoor and corrosive areas, using aluminum or stainless trays where galvanized steel is not enough
What to include in a request
A request with these details can be quoted without a round of questions. Send what you have and we will ask for the rest.
- 01Type: ladder or solid-bottom trough, and ventilated or not
- 02Width and loading depth, from the cable fill calculation
- 03Span and load class under NEMA VE 1, from the support design
- 04Material and finish: hot-dip galvanized steel, aluminum or stainless steel such as 316
- 05Straight section length and the fittings: elbows, tees, crosses, reducers, drop-outs
- 06Covers, splice plates, hardware, supports, and bonding or grounding provisions
- 07Quantity by length and fitting count, and the documents required
Electrical and instrumentation
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Guides
Guides
- 01How to write an RFQ for industrial materialsWhat an RFQ for industrial materials must specify: item, size, schedule or class, grade, standard, quantity, MTRs, inspection, packing and Incoterm.Learn more
- 02Industrial procurement process, step by stepHow industrial procurement works, step by step: requirement, RFQ, bid tabulation, evaluation, award, PO, expediting, inspection, logistics and delivery.Learn more
Questions
Questions
01How do I choose the tray width?
From the number and diameter of the cables and the fill limits that apply, such as the NEC Article 392 rules for cable tray. The electrical designer sets the width and depth. Send the cable schedule if you want help checking it.
02Galvanized steel, aluminum or stainless steel?
Hot-dip galvanized steel is the common economical choice and is strong. Aluminum is light and resists corrosion in many outdoor areas. Stainless steel is chosen for aggressive chemical or marine environments. The project specification names the material.
03What is a NEMA VE 1 load class?
NEMA VE 1 rates cable tray by the working load it carries over a given support span, in classes such as 8A, 12B or 16C that combine a load and a span. The class on your drawing sets the tray and the support spacing.
Send the specification. We will take it from there.
A material list, a drawing or a single line: tell us what the project needs and where it is going.