AN Wallis and Co Ltd

General-purpose insulating tape for electrical applications.

The Wallis heavy duty earth housing is designed, shaped and sized to fit easily into brick paved walkways. The lip of the base makes a flush fit with standard-sized bricks making the housing blend in without the need for a cement surround. The housing will withstand loads of up to 6,000 kilograms and is suitable for most commercial and industrial applications. The lid locks into the base and can be opened with a standard flat screwdriver. The base has three built-in slots for locating earth bars.

These Wallis interceptor plates fit under the roof tile and are connected onto the lightning protection system. The square plate protrudes from the tile and provides the interception point.

This Wallis clamp is used for connecting flat tape to solid circular conductor, for example where the lightning protection system has been designed in 8mm copper conductor but the connection to the earth rod is made using 25 x 3mm copper tape. It will also serve for making through joints and tee connections in 8mm solid circular conductor.

Material: Copper to BS EN 13601 (formerly BS 1432).

Light Duty Saddles are used to support air rods on flat roof surfaces.

The Wallis light duty earth inspection housing has a maximum safe working load of 2,000 kilograms. It is UV stabilised against degradation by sunlight and non-brittle to prevent cold weather damage. The unique, detachable easy-locking lid ensures security of equipment as the locking mechanism can only be operated by the special key provided with the housing. The base has built-in slots for locating earth bars. Its lightweight feature allows easy handling, storage and transportation. The termination depth is increased 100% by simply locking two units together, allowing deeper earth electrode connections to be made.

Wallis Low Res provides a permanent simple solution to substantially lower the resistance of an earthing system. It is a high performance low-resistance earthing compound which when mixed with cement and water forms a high strength electrically conductive concrete to last for the life of the system. Low Res is supplied in a fine granular form available in 25kg. It is widely used in earthing and grounding applications where permanent low resistance and high compressive strength solutions are required. By mixing Low Res with cement at a ratio of 2:1 the resulting concrete is electrically conductive whilst offering a solid electrical connection between the earthing system and the ground. Low Res is a non leaching, maintenance free stable earthing compound ideal for use in ground conditions where conductivity is very poor such as rock or shale. Low Res provides a permanent path for excellent conduction of current instead of attempting to employ large diameter difficult to drive earth rods. Low Res applications include static control for aircraft aprons and fuel tankers, RF and microwave screening and earthing for a wide variety of applications in Oil and Gas installations, Telecommunications industry, Defence Establishments, Rail and Underground installations, Electricity and Water Companies.

Copper to BSEN 13601 (Formerly BS 1432) PVC Colours to BS 6746C

Metallic cable clips secure the stranded copper conductor to the building surface. Fix using countersunk woodscrew 1 1/2" x No. 10 and No. 10 wall plug.