The trip ratings of upstream and downstream circuit breakers should be same as I was told by a senior. Why cant the downstream circuit breaker be...
IN THIS ARTICLE we discuss Residual Current Device (RCD) operation, which can occur due to electrical faults both downstream and upstream of the...
I know the difference between the 2 sorts but I'm thinking do I need to fit 10KA breakers in this scenario, when I've got 6KA MCBs in the van! 3...
Can anyone help with the time current characteristics of which will operate first? Essentially a 40A type D crabtree pole star fed from a BS 88 g...
Morning Guys I know that if a 100mA RCD is followed by a 30mA RCD, the 100mA needs to be S type. If a 300mA RCD is followed by a 30mA RCD (Farm...
hi guys im an apprentice and need some more understanding about rcds please may i have an example of rcd discrimination and what ratings i would...
Just completing the testing of a transportable catering unit.(chip van). Within the NICEIC REPORT I must complete, a.MAXIMUM TOLERABLE FAULT...
Am I correct in thinking that when doing a Ze test using a 1553, the dial needs to be set on the 'Hi' setting in the green loop section of the...
Hi guys I was just thinking about what someone put about a question I asked a couple of days ago. I asked about putting an RCD proceted fused spur...
can anyone explain how an upstream supply fault can make an rcd trip?....shakey maybe:confused:
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