UL & FM: What is it?
For almost a century, the industry has required goods with the UL (Underwriters Laboratories) and FM (Factory Mutual) insignia to be used in fire prevention systems. The definition of UL and FM certifications and their significance in the production of ductile iron pipe will be discussed in this Iron Strong Blog.
What is the typical temperature rating for wires?
A substance is less prone to degrade at greater temperatures the higher its heat resistance. Although conductors can be rated as low as 60°C or as high as 1,200°C for certain special purpose wire and cables, the most typical conductor temperature rating is 90°C.
What is the UL's temperature rating?
Typical Types of Industrial and Commercial WiresStyle Category Temperature RatingHookup UL 1015, 80-105°CHookup UL 1061 at 80°C110°C UL 1569 Hookup80°C Jacketed Multiconductor UL 2464Five additional rows
Is UL an international standard?
UL is a recognized standards developer in the US and Canada, having developed more than 1,500 standards over the course of a century. UL Standards collaborates with national standards organizations in many nations to further its worldwide public safety objective to create a safer, more sustainable global community.
In terms of electricity, what is the U?
Ohm's Law:U is for voltage impressed on a circuit, I stands for current flowing in a circuit, and R is for circuit resistance. U=IR, I=U/R, and R=U/I. Ohm's Law can be used to determine an electrical circuit's fault current, voltage drop, and other properties.
On a switch, what does UL stand for?
It's possible that you have seen the tiny UL mark embossed or printed on the product's label. Underwriters Laboratories is referred to as UL. This agency has been creating safety standards, ensuring product conformity, and leaving its stamp on items we use on a daily basis for almost a century.
How do UL and TUV differ from one another?
European standards provide the basis of TUV certification, whereas American standards form the basis of UL certification. This implies that products with UL certification may not fulfill the same standards as those with TUV certification, and vice versa.
What distinguishes UL marking from UR marking?
Products that have been certified utilize the UL mark. Products with UL listings may include appliances or other electrically powered equipment, as well as wiring components for power distribution. Components of items that require a UL product listing are designated with the UR mark.
Does UL accept CSA?
UL was considered the top certification laboratory in the US for a long time. However, CSA has gained such widespread recognition in the US over the last 20 years that the UL and CSA/US markings are now essentially synonymous.
ASTM 119: What is it?
Ratings and criteria for the fire resistance of different construction materials are outlined in an ASTM E119 standard. It directs the construction of interior spaces by professional contractors and other project partners.
