004 Online additional questions (A)

What type of fixing should be used to fix trunking to a wall?

• Countersunk screw

• Roundhead screw

• Nut and bolt

• Pop rivet

Answer explanation

Roundhead screws are ideal for fixing trunking to a wall as they provide a flat surface for the trunking to sit against, ensuring a secure and stable attachment. Other options may not offer the same level of support.

What is the image of?

• Cable supports for vertical trunking runs

• Cable supports for horizontal trunking runs

• Cable supports for SWA cable

• Cable supports for SY cable

Answer explanation

The image depicts cable supports specifically designed for vertical trunking runs, which are used to secure cables in a vertical orientation, distinguishing them from supports for horizontal runs or specific cable types like SWA or SY.

What should be provided between joins to ensure continuity of earthing along a trunking run?

• Welded joins

• separate copper strap between joins

• Well filed joins

• Pop riveted joins

Answer explanation

To ensure continuity of earthing along a trunking run, a separate copper strap between joins is essential. This provides a reliable electrical connection, unlike welded or riveted joins, which may not maintain continuity effectively.

What should be done if a containment system passes through a fire barrier?

• restored to at least its original value using fire retardant materials

• restored to below its original value using fire retardant materials

• Left open

• Boarded up with plasterboard

Answer explanation

If a containment system passes through a fire barrier, it must be restored to at least its original value using fire retardant materials to ensure safety and maintain the integrity of the fire barrier.

What is the main hazard that must be considered when a trunking is installed with the lid underneath?

• Cables falling out when covers are removed

• Cables being crushed by gravity

• Cables overheating due to grouping

• Cables being damaged when pulling through

Answer explanation

When trunking is installed with the lid underneath, removing the covers can cause cables to fall out, posing a safety hazard. This is the main concern, making 'Cables falling out when covers are removed' the correct answer.

What should be provide when a trunking is installed with the lid underneath?

• Cable retaining straps

• Cable supports for vertical runs

• Tie wraps

• Expansion couplers

Answer explanation

When a trunking is installed with the lid underneath, cable retaining straps are necessary to secure the cables and prevent them from sagging or falling out, ensuring a neat and safe installation.

What is the recommended distance between cable retaining straps to prevent cables falling out of trunking?

• 1.5m

• 2m

• 2.5m

• 3m

Answer explanation

The recommended distance between cable retaining straps to prevent cables from falling out of trunking is 1.5m. This spacing ensures adequate support and minimizes the risk of cables sagging or detaching.

What containment system is shown in the image?

• Tray

• Basket

• Ladder

• Ducting

Answer explanation

The image depicts a tray containment system, which is designed to catch spills and prevent leaks. This distinguishes it from other options like baskets, ladders, or ducting, which serve different purposes.

What containment system is shown in the image?

• Tray

• Basket

• Ladder

• Ducting

Answer explanation

The image depicts a ladder, which is a containment system used for accessing elevated areas. Unlike trays, baskets, or ducting, a ladder is specifically designed for climbing, making it the correct choice.

What containment system is shown in the image?

• Tray

• Basket

• Ladder

• Ducting

Answer explanation

The image depicts a basket containment system, which is designed to hold and organize items securely. Unlike trays or ducting, a basket provides a more enclosed structure, making it the correct choice.