![]() ![]() One of the things that comes up regularly is the question of legislation and whether or not arc flash risk management is required under UK law. Proper planning ensures that today’s investments will provide lasting value into the future.Is Arc Flash a UK Legislative Requirement?Įlectrical Safety UK specialise in carrying our arc flash studies for our many clients. Our cable testing allows utilities to easily measure the health of their systems and insure against premature, costly replacements. ![]() Other diagnostic tests often apply 150% of the cable’s voltage rating, further stressing the cables and accelerating deterioration.Ĭable deterioration leads to system failure and poor reliability. Based on the DC Polarization/Depolarization Current Measurement principle, it’s a non-destructive method that applies a maximum of 30% of the cable’s voltage rating. This unique, on-site diagnostic service determines the health of XLPE cables while preserving their integrity. We have partnered with National Research Council Canada (NRC), the Government of Canada’s premier research and technology organization, to diagnose the health of XLPE cables without damaging them. Inside this boundary, accidental movement can put a part of the body or conductive tools in contact with live parts.Įnergy Ottawa offers a state-of-the-art, non-destructive cable measurement system for the dependable assessment of medium voltage distribution cables. Only qualified persons may cross into the restricted approach boundary. ![]() Unqualified worker can only cross this boundary if he or she is continuously escorted by a qualified worker. The limited approach boundary is designed to keep unqualified workers safe from shock hazards. Workers must select gloves that have a rating for the level of voltage to which the gloves will be exposed. ![]() Workers must be protected from shock by wearing rubber insulating gloves if their hands enter the restricted approach boundary. Many electrical workers have been injured because they used test equipment rated for 1,000 volts on circuits energized at 4,160 volts or higher. Nominal voltage is a value assigned for conveniently designating a voltage class, such as 120/208V, 277/480V. IEEE 1584 a guide commonly used for performing arc flash incident energy and boundary calculations, defines the working distance as “the dimension between the possible arc point and the head and body of the worker positioned in place to perform the assigned task.” The working distance is the distance at which the incident energy is calculated. The amount of current supplied by the electrical equipment’s upstream device.Ī recommended list of shock and arc flash hazard PPE that shall be worn when performing safe work on equipment that is not placed in an electrically safe condition. If a person were standing at this distance from the arc source, they could receive a second-degree burn. The Arc flash boundary is the distance from a possible arc source to where the incident energy drops to 1.2 calories per square centimeter. This energy is measured in calories per centimeter squared. Incident energy, as indicated on the arc flash label, is the level of thermal energy that one would feel at the working distance in the event of an arc flash. ![]()
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