Twin and Earth Cable — 1.0mm, 1.5mm, 2.5mm and 10mm Grey T&E for UK Electricians

Twin and earth cable is the backbone of domestic and light commercial electrical installations in the UK. Whether you're wiring a lighting circuit, running a ring main, or installing a cooker circuit, grey T&E cable to BS 6004 is the standard choice for fixed wiring. At APM Electricals, we stock twin and earth cable in the core conductor sizes used by professional electricians — from 1.0mm² for low-demand circuits through to 10mm² for high-draw appliances — available in roll lengths to suit every job from a one-room rewire to a full house installation.

Understanding Twin and Earth Cable Sizes

Grey twin and earth (T&E) cable contains two insulated conductors — live (brown) and neutral (blue) — plus a bare earth conductor, all within a flat grey PVC outer sheath. The conductor size dictates the current-carrying capacity and the type of circuit the cable is suited for:

• 1.0mm² — doorbells, low-demand lighting spurs, signal circuits; rated at 15A clipped direct
• 1.5mm² — standard lighting circuits throughout domestic properties; rated at 20A clipped direct
• 2.5mm² — socket ring mains, radial power circuits, immersion heaters; rated at 27A clipped direct
• 10mm² — cooker circuits, electric showers, EV charge points; rated at 64A clipped direct (confirm derating for installation method)

All APM T&E cable is supplied in grey PVC to BS 6004 specification. Our low smoke versions are manufactured to LSOH (Low Smoke Zero Halogen) standards, reducing toxic fume emission in the event of fire — increasingly specified in commercial and public sector projects and preferred by many contractors even on domestic work.

1.0mm² Twin and Earth Cable — Low-Demand Circuits

The smallest conductor size in our range, 1.0mm² T&E is used where current demand is minimal. Common applications include doorbell and chime wiring, smoke alarm interconnection (where the alarm draws from the mains), secondary lighting spurs feeding a single luminaire, and garage or outbuilding supplies with very low loads. Our 50m roll gives you enough cable for most single-circuit jobs without waste.

APM 1.0mm² Twin & Earth Cable Grey 50M

Price: £35.17 inc VAT

50-metre drum of 1.0mm² grey twin and earth cable. Suitable for low-demand fixed wiring circuits including lighting spurs and doorbell wiring. Grey PVC outer sheath to BS 6004.

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1.5mm² Twin and Earth Cable — Lighting Circuits

The most widely used cable size in domestic electrical work, 1.5mm² T&E is specified for almost every lighting circuit. Whether you're wiring pendant lights, spotlights, downlights or batten fittings, a 1.5mm lighting circuit is standard throughout UK housing. Our low smoke 100m roll is the ideal site quantity for lighting a typical 3-4 bedroom house in a single drum, eliminating mid-job trips to the merchant. The low smoke zero halogen formulation also meets the fire performance requirements increasingly demanded in apartment buildings, care homes and commercial fit-outs.

Twin & Earth Low Smoke Cable 1.5mm x 100M

Price: £64.99 inc VAT

100-metre drum of 1.5mm² low smoke zero halogen twin and earth cable. The go-to for lighting circuits in domestic and commercial properties. Reduced toxic fume emission for improved fire safety performance. Grey PVC outer sheath.

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2.5mm² Twin and Earth Cable — Ring Mains and Power Circuits

The workhorse of UK domestic wiring, 2.5mm² T&E is used for socket ring mains, 20A radial circuits, FCU spurs feeding fixed appliances, and other power circuits throughout the home. A 100m roll typically covers a ring main on one floor of a house. Our low smoke 2.5mm roll is ideal for electricians who want a single-cable solution that meets both domestic and commercial specifications without carrying two types of 2.5mm stock. At £125.99 for 100m, it represents strong value compared to builder's merchant pricing on premium low smoke T&E.

Twin & Earth Low Smoke Cable 2.5mm x 100M

Price: £125.99 inc VAT

100-metre drum of 2.5mm² low smoke zero halogen twin and earth cable. Ideal for socket ring mains, 20A radial circuits and FCU spurs. Reduced halogen emission in fire conditions. Grey PVC outer sheath to BS 6004.

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10mm² Twin and Earth Cable — High-Power Circuits

For the highest-demand domestic circuits, 10mm² T&E handles the heavy-current applications: electric cookers, 8.5–10.8kW showers, and 7kW EV chargers. Because 10mm cable is typically only run as a single dedicated circuit to one appliance, most jobs require only a few metres — which is why we sell it by the metre and in a convenient 5m length, saving you buying a full drum for a short run. Always derate for installation method: 10mm clipped direct is rated at 64A but must be derated for containment (conduit or trunking) or grouped cables per BS 7671 Table 4B1.

10mm² Twin & Earth Cable Grey 5M

Price: £26.99 inc VAT

5-metre cut length of 10mm² grey twin and earth cable. Suitable for cooker circuits, electric shower supplies, and EV charge point connections. Sold as a cut length — ideal where only a short run is needed without buying a full drum. Grey PVC outer sheath.

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Buying Twin and Earth Cable at APM Electricals

We supply T&E cable to trade electricians and domestic installers across the UK. Our pricing is competitive with the trade counters — and you can order online for delivery or collect from our location. No account required for one-off orders, though trade customers can ask about account terms for regular purchases.

When ordering cable, check the installation method and grouping factor for your circuit — the current ratings above apply to single cables clipped direct in free air. For cables in conduit, trunking, or grouped with other cables, apply the appropriate derating factors from Appendix 4 of BS 7671:2018+A2:2022 (18th Edition Wiring Regulations).

Frequently Asked Questions

What is the standard cable for lighting circuits in the UK?

1.5mm² twin and earth grey cable is the standard for domestic lighting circuits in the UK. It provides sufficient current-carrying capacity for a standard 6A or 10A lighting circuit with multiple pendants or downlights.

Is 2.5mm T&E suitable for a ring main?

Yes — 2.5mm² twin and earth is the correct cable for a standard 32A socket ring main in a domestic property. Both the ring main conductors and any spurs feeding additional sockets must be 2.5mm.

What is low smoke zero halogen (LSOH) cable?

LSOH (also called LSZH or LS0H) cable uses a special compound in the outer sheath that produces minimal smoke and no halogen gases when burned. Standard PVC gives off toxic hydrogen chloride gas in a fire; LSOH does not. It's increasingly specified in public buildings, blocks of flats, and commercial premises where fire safety standards are higher.

Do I need special cable clips for T&E?

Twin and earth cable is clipped using flat oval cable clips sized to the cable diameter. We stock 1.5mm and 2.5mm T&E cable clips from CED — grab a box when ordering your cable to keep runs neat and secured at the correct intervals per BS 7671.

Can I use twin and earth cable outdoors?

Standard grey T&E is not suitable for outdoor use or direct burial without additional protection. For outdoor circuits, use armoured SWA cable or route standard T&E in a weatherproof conduit system. For underground runs, steel wire armoured (SWA) cable is the correct specification.

Browse our full electrical cable range at APM Electricals — including T&E in all sizes, armoured cable, flexible cord, and conduit accessories — all available online for trade and retail customers.