Live End Cap (Insulcap-Live)
Insulcap-Live (GLEC) is a heat shrinkable cap for sealing live cable ends, manufactured from cross-linked polyolefin in four sizes covering 1.5 to 300 sq.mm conductor.
- ASTM D638
- ASTM D570
- ASTM D2671
Choose a size
Selection Charts
- Ds (min.)
- Minimum internal diameter as supplied
- Df (max.)
- Maximum internal diameter after free recovery
- Ls (min.)
- Minimum length as supplied
- Tf
- Wall thickness after recovery (±10%)
| Cable | Code | Ds(min.) | Df(max.) | Ls(min.) | Tf(±10%) |
|---|---|---|---|---|---|
| 4 x 1.5-6 mm² | GLEC 101AL | 25 | 8 | 75 | 2.5 |
| 4 x 4-35 mm² | GELC 201 L | 40 | 15 | 120 | 3.3 |
| 4 x 50-150 mm² | GLEC 301 L | 55 | 25 | 170 | 3.8 |
| 4 x 150-300 mm² | GLEC 401 L | 75 | 35 | 180 | 4.0 |
D: internal diameter; s: as supplied; f: after free recovery. Source: GALA INSULCAP-Live (GLEC) catalogue sheet, Issue 2, January 2024.
Inner caps (4 pcs per cable end, one per core)
| Cable | Code | Ds(min.) | Df(max.) | Ls(min.) | Tf(±10%) |
|---|---|---|---|---|---|
| 4 x 1.5-6 mm² | GLEC 001S | 6 | 2 | 25 | 2.0 |
| 4 x 4-35 mm² | GLEC 001 | 12 | 4 | 40 | 2.3 |
| 4 x 50-150 mm² | GLEC 101 | 20 | 7.5 | 55 | 2.3 |
| 4 x 150-300 mm² | GLEC 201 | 40 | 15 | 90 | 3.3 |
Source: GALA INSULCAP-Live (GLEC) catalogue sheet, Issue 2, January 2024.
Material properties
Technical Specification
| Properties | Value | Standard |
|---|---|---|
| Physical | ||
| Tensile Strength | 12 N/mm² (Mpa) (min.) | ASTM D638 |
| Ultimate Elongation | 350 % (min) | ASTM D638 |
| Water absorption | 0.2 % (max.) | ASTM D570 |
| Thermal | ||
| Accelerated ageing | (120 °C for 500 hrs) | ASTM D2671 |
| Tensile Strength | 11 N/mm² (Mpa) (min.) | ASTM D638 |
| Ultimate Elongation | 300 % (min.) | ASTM D638 |
| Heat Shock (250 °C for 30 min.) | No cracking or flowing | ESI 09-11 |
| Continuous Temperature Limit | -40 to +100 °C | IEC 216 |
| Electrical | ||
| Dielectric Strength | 12 KV/mm.(min) | ASTM D149 |
| Volume Resistivity | 1 x 10¹⁴ Ohm.cm (min) | ASTM D257 |
| Dielectric constant | 5 (max.) | ASTM D150 |
Source: GALA INSULCAP-Live (GLEC) catalogue sheet, Issue 2, January 2024.
Dimensions & Drawings
Each core is separately sealed with a small inner end cap. A thick-wall outer cap, marked with a live flash symbol, is then applied over the assembly.
Covered on this page
- Cable End Caps - Live End Caps
Features & Benefits
- Dielectric strength 12 kV/mm min., volume resistivity 1×10¹⁴ Ohm.cm min. (ASTM D149, ASTM D257)
- Four GLEC sizes cover conductor 1.5 to 300 sq.mm
- Inner cap (GLEC 001S) plus outer cap in a 4-piece + 1-piece kit
- Continuous temperature limit -40°C to +110°C
- Tensile strength 12 N/mm² min., elongation 350% min. (ASTM D638)
- Cross-linked polyolefin material
Applications
- Sealing live cable ends
- Marking a live cable end during installation (outer cap carries a live flash symbol)
Standards & Compliance
- ASTM D638
- ASTM D570
- ASTM D2671
- ESI 09-11
- IEC 216
- ASTM D149
- ASTM D257
- ASTM D150
FAQs
Frequently Asked Questions
What is the Live End Cap used for?
It is used for:
- Sealing live cable ends
- Marking a live cable end during installation (outer cap carries a live flash symbol)
How do I choose the right size?
A heat-shrink part is chosen by two diameters. As supplied (Ds (min.)) it must open wider than the largest thing it has to slide over; after shrinking (Df (max.)) it must close smaller than the smallest thing it has to grip. Measure both on your cable or busbar and pick the first code in the selection chart that satisfies both.
How is it installed?
Clean and degrease the surface, position the part, then shrink it with a gas torch or a hot-air gun: keep the heat moving round it with a smooth, brushing motion so it recovers evenly without scorching. Start at one end and work steadily along to the other.
Which standards and test methods are quoted for it?
These, with the values in the Technical Specification on this page:
- ASTM D638
- ASTM D570
- ASTM D2671
- ESI 09-11
- IEC 216
- ASTM D149
- ASTM D257
- ASTM D150
Where can I download the datasheet?
From the "Download datasheet" button at the top of this page, or here:
Can I get a quote, a sample or a size that is not listed?
Send your cable details, quantity and application with the "Request a Quote or Sample" form at the foot of this page. For a size or variant that is not in the chart, describe what you need there, or use Technical support at the top of the page, and the technical team will confirm what can be supplied.
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