Technology

Smart box overview

In the first in a series of videos, Tony Cable, and Dave Ribbons, of Scolmore Group, take us through Click Smart, which controls lighting, and small power applications through up to eight smartphones or tablets via the Click Smart app (Android or iOS only). Click Smart can be added to existing wiring installations, and receivers can be installed behind light fittings or into suitable installation boxes. For the second…

What are the Electricity at Work Regulations 1989?

The Electricity at Work Regulations 1989 expand on the rules regarding electrical safety in the Health and Safety at Work Act 1974. As with the HASAWA, employers are given duties and responsibilities to make sure that all work activity that uses or may be affected by electricity is done safely, and that all foreseeable risks are assessed and minimised as much as possible. The regulations are not purely to prevent…

COSHH – what you need to know

COSHH stands for the Control of Substances Hazardous to Health Regulations 2002. COSHH regulations mean employers must assess the risks and take precautions to ensure neither employees nor members of the public are injured by exposure to hazardous substances. Employers must train their workforce in identifying and minimising the risks. They must also monitor employees’ exposure to dangerous substances, providing health checks where required. What counts as a hazardous substance?…

What are the different types of circuit?

The key thing to remember when selecting the type of circuit for an electrical installation is the requirements stated in the IET Wiring Regulations. These are that: The number and type of circuits required for lighting, heating, power, control, signalling, communication and information technology, etc, shall be determined from knowledge of: Location of points of power demand. Loads to be expected on the various circuits. Daily and yearly variations in…

Taking the feed (supply) to a switch

In this video, Gary Hayers form Tresham College looks at the practice of taking a supply to a switch. This follows another tutorial where Gary explains 3-plate loop-in method. Student training aid for the connections required when the feed is taken directly to the switch. Also, how to wire two way and two way and intermediate switching. Video explains the connection required within switches. The circuit is wired in…

The process for safe isolation

In this video Steven Devine, author of the IET Student’s Guide, walks us through the process of safe isolation.

Trunking and IP Ratings

NAPIT’s Bill Allan discusses the application of the IP Code to cable trunking. In this article, we will discuss the application of the IP Code to cable trunking. Regulation 521.10.1 Regulation 521.10.1 of BS 7671 requires that non-sheathed cables (ie. ‘singles’) for fixed wiring can only be installed in cable trunking if the trunking provides at least the degree of protection IPXXD or IP4X and if the cover can only…