IEC 61914 is the key standard reference for cable cleats, but writing "IEC 61914 cable cleat" in an RFQ is not enough. The cleat rating depends on the tested product, cable formation, cable diameter, short-circuit current, cleat spacing and mounting structure.
This checklist helps electrical engineers and buyers send the data a supplier needs to confirm a safe cleat selection instead of guessing from cable size alone.
An IEC 61914 cable cleat RFQ should state cable OD, formation, prospective short-circuit current, required cleat spacing, mounting structure, material, fire requirement, environment, certificates and quantity.
RFQ scope reminders
IEC 61914 cable cleat RFQ fields
| Field | What to Send | Why It Matters |
|---|---|---|
| Cable OD and type | Actual OD, insulation/sheath, conductor size and cable data sheet. | Cleat fit is selected by OD, not conductor size alone. |
| Formation | Trefoil, flat, single circuit or multiple circuits. | Short-circuit force and tested rating depend on formation. |
| Short-circuit current | Peak current if known; RMS symmetrical current, duration and X/R ratio if available. | IEC 61914 restraint is checked against short-circuit duty. |
| Cleat spacing | Required or proposed spacing; state if supplier should recommend maximum spacing. | Spacing controls load per cleat and cannot exceed tested conditions. |
| Mounting structure | Tray, ladder, channel, angle, bracket material, hole pattern and orientation. | The tested cleat must be compatible with the real support. |
| Environment and material | Indoor, outdoor, coastal, marine, tunnel, fire or UV exposure; stainless or aluminum preference. | Corrosion, galvanic isolation and fire behavior affect selection. |
If the electrical study gives only RMS current, send it anyway and ask the supplier to identify what peak-current assumption is used.
Do not quote by conductor size alone
A 240 mm² cable from one manufacturer may have a different outside diameter from another because insulation, sheath and voltage class differ. Cable cleats grip the outside of the cable, so the RFQ should include the cable data sheet or actual measured OD. Conductor size is useful, but it is not the cleat size.
State both formation and spacing
Trefoil and flat formations create different electromagnetic force patterns during a fault. The same cleat may have different tested ratings for different formations and spacings. If the project has not fixed spacing, ask the supplier for a maximum spacing based on the short-circuit rating and the mounting structure.
Separate material choice from short-circuit rating
SS316, aluminum or nylon tells you something about corrosion, weight and fire behavior, but it does not by itself prove short-circuit restraint. The RFQ should ask for IEC 61914 evidence for the selected product and also state the environmental material requirement. Both are needed.
What makes a quotation comparable
Two cable cleat quotations are comparable only when they refer to the same cable OD range, formation, short-circuit duty, maximum spacing, material, mounting hardware, certificates and packing scope. A lower price without test evidence for your fault current is not the same product scope.
Frequently asked questions
Is IEC 61914 enough information to quote cable cleats?
No. IEC 61914 is the standard reference, but the supplier still needs cable OD, formation, short-circuit current, required spacing, mounting structure, material, environment, quantity and documents.
Do cable cleat quotations need RMS current or peak current?
Send both if available. IEC 61914 short-circuit restraint is normally checked against peak current, while many electrical studies provide RMS symmetrical current and duration. State the system X/R ratio if known.
Can I choose cleat spacing from a generic table?
Use generic spacing only for early screening. Final spacing should not exceed the spacing used in the manufacturer test data for the same cable formation and fault duty.
Related WeiQue series
Recommended reading
References
These pages summarize public standard metadata and industry application information. They do not reproduce the paid DIN standard text.