I promise you will never forget this any more! kW = voltage x current x pf We say the better the power factor i.e. the closer to 1 the better… So: Say 34.4kW= 400V x 100amp x 0.869(pf) Say 40kW= 400V x 100amp x 1(pf) – You get more kW with bad power factor…or do […]
Nice anecdote to explain PF in electricity.
Why so many names for the same thing? Are all switches rated as load break switches or as isolators? In other words, if you see 10A – and that’s all we got – can we use this as a load break switch? Or is there even a difference? Linguistically switch will refer to anything with […]
At first I am a bit confused…why it does not trip? So I ask:- Ok help me out here…
So Mr. E. came back from the auction with a old “new” machine. Placed it in the factory and looks around for an electrical point to connect the machine. Ahh, here is one closest to this electrical board. Oh damn, need a circuit breaker! Excited for the new machine the electrical holesaler gets called. ===>>>OOPS…You are […]
Am I sick in the mind if I refer to electrical products as beautiful or even sexy or ugly? I can look at a contactor or ACB and simply describe it as beautiful…that’s the only word to describe it…Well made maybe? Engineering excellence maybe? Well designed maybe? Splendidly manufactured? But what is the word to […]
All the years I chose a contactor based on the current rating on the box. But then I begin to put the product database together (see electrosource.org) and the differences is vast. So who is right and who is wrong…is the Americans or is the Europeans right (Both can’t be right? I choose a contactor […]
Basics on selecting a circuit breaker for FULL MOTOR PROTECTION (tech). **This customer insists he CAN use a normal circuit breaker for FULL motor protection!! First lets us qualify the title: I am not referring to Motor Protection Circuit Breakers for they are specifically designed for this job. We are referring to a normal traditional […]
What do we have to consider to use a normal circuit breaker as a COMPLETE motor protection device…startup current/short circuit as well as overload protection. ===>>>OOPS…You are not logged in for this group!