Did you know?
The basics of our trade, explained simply.
Plenty of calculations explain electricity, but the aim of these articles is to help you understand the basics of our trade in simple terms.
Did you know?
Understand before you plug in.
kVA or kW: what's the difference?
Active power, apparent power and cos φ: why generators and grid connections are rated in kVA.
ReadWhat is the diversity factor?
Not all equipment runs at full power at the same time. The diversity factor avoids overcapacity.
ReadHow much power can you draw from a P17 socket?
From 3.7 kVA for a 16 A single-phase socket to 277.1 kVA for a 400 A Powerlock: maximums, not targets.
ReadSingle-phase or three-phase: why balance the phases?
The most loaded phase sets the size of the source. Spreading equipment evenly avoids oversizing.
ReadWhat is event power distribution?
Every event is unique, and so is its set-up. And why ilotage (sharing a supply between stands) is banned at trade shows.
ReadWhat is a Twin zero-interruption generator set?
Two synchronised generators sharing the load: if one goes down, the other takes over, with no interruption at all.
ReadCable size depends on current, but also on length!
The longer the cable, the greater the voltage drop. Choosing the cable size takes planning.
ReadWhy does it “trip”?
30 mA RCD, circuit breaker: the distribution box has either saved your life or saved your installation.
ReadA project? Let's talk power.
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