toolbox 1

What colours are used for 415V 3-phase AC?

L1 = Red, L2 = Black, L3 = Grey, Neutral = Blue, Earth = Green/Yellow.

What colours are used for 240V 1-phase AC?

Live (L1 or Phase) = Brown, Neutral = Blue, Earth = Green/Yellow.

What is the wire colour for 110V DC?

Black.

What is the wire colour for 110V AC?

Grey.

What wires are used in panel wiring?

1.5mm² and 2.5mm² tri-rated white wire.

What is used for earthing panels?

1 x 75mm² tri-rated wire, 50x4mm or 50x6mm earth tape.

What is a Cleveland multi-core cables?

XLPE insulation, LSZH sheath, armoured, black outer. Sizes: 1.5mm² to 16mm², Voltage: 600/1000V.

What are telephone cables made of?

Tinned copper, LSZH insulation, Standard: ESI 09-6 Section 4.5.

What are multi-core and panel cables used for?

Control panels, switchgear, CTs and VTs (protection and metering), AC/DC supplies, alarm circuits, tap changers, remote indication.

What are the crimp colours and sizes?

Red = 1mm² – 1.5mm², Yellow = 1.5mm² – 2.5mm², Blue = 4mm² – 6mm².

What colours are used for CT and VT ferrules?

CT = Red ferrule (IDs A, B, C, D), VT = Yellow ferrule (IDs E, F, G).

What are the 4 base wire colour pairs in a Cleveland 20-pair cable?

1. White/Blue, 2. Red/Blue, 3. Black/Blue, 4. Yellow/Blue.

What gland size fits 2c–4c 2.5mm² or 5-pair cable?

20s.

What gland size fits 7c 2.5mm² or 10-pair?

20L.

What gland size fits 12c or 20-pair?

25mm.

What gland size fits 19c–27c?

32mm.

What gland size fits 37c 2.5mm²?

40mm.

What drill size do I need for a 6mm tap?

5.5mm drill.

What drill size is used for 10mm tap?

8.5mm drill.

What drill size is used for a 4mm tap?

3.5mm drill.

What drill size is used for a 5mm tap?

4.5mm drill.

What drill size is used for an 8mm tap?

6.8mm drill.

What drill size is used for a 12mm tap?

10.2mm drill.