Electrical equipment makes up a significant part of today’s work environments. They increase job efficiency and productivity. But pieces of equipment are also probable source of various electrical hazards. A clear understanding of electrical connections and warning about potential dangers through safety labels and safety symbols can help to prevent accidents in the workplace.
When using electrical equipment, ‘grounding’ is always considered to help prevent people from accidentally coming into contact with electrical hazards. The ‘ground’ is a reference point for your entire machine’s circuit measurement. In electrical engineering, ‘ground’ is known as a common return path for electric current, or a direct physical connection to the earth.
Warning labels and signs produced by Clarion Safety Systems, follow the best practice ANSI and ISO standards for content and symbol use. Their labels help prevent accidents in workplaces with numerous electric lines.
Typical ground warning signs are represented using a standard electrical symbol ground label. But there are different types of electrical ground connections with different symbols present in every workplace. Here is a guide to help you understand ground symbols.
– Earth Ground
This ground is electrically and physically connected to the earth using aluminum or copper wires. An earth ground is not less than 8ft deep and is generally immune to various electrical changes. The earth ground symbol consists of three decreasing horizontal lines with one vertical line.
– Chassis Ground
The chassis is the metal housing which encloses your equipment’s electric devices. A chassis ground connects this device to another line which grounds it and directs any malfunction to it rather than the machine’s operator. It is represented by three diagonal lines with one vertical one.
– Digital and Analog Grounds
Analog and digital circuits will generate a current spike in periods of signal change. The digital currents are considered more “noisy” compared to the analog ones. Separating the analog and digital current is essential in preventing generation of noise within circuits. The noise typically interferes with sensitive signals in your machine’s local circuits. The interference can prove detrimental. Digital and analog ground circuits are represented using an inverted triangle with a vertical line. Labeled with letter “D” for digital and “A” for analog.
From the above guide, it is now easy to pick your symbols for ground electric connections. Simple circuit reference points in offices and products increase customer’s safety. The law also expects all electrical products to include these symbols. Abiding by safety standards help you and your business avoid costly penalties and maintain a safe workplace.