2391 : 21#Exam Sample Question (Short Question) | on ElectriciansForums

2391 : 21#Exam Sample Question (Short Question)

Discuss 2391 : 21#Exam Sample Question (Short Question) in the Electrician Courses : Electrical Quals area at ElectriciansForums.net

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LukeScotty

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List three instrument tests which are undertaken to confirm the correct operation of a
30mA RCD installed to supplementary protection against direct contact.
 
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at half the rated value of the device (15mA)
at the rated value (30mA)]
and at 5 times the rated value (150mA)
All on both cylces
at 15mA no trip
at 30mA less than 200mS
at 150mA less than 40mS

(this was done from memory after a couple of beers and match of the day so double check me)
 
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