Should we be testing after a fused spur for example on a heating circuit I've always been told to only test upto the fused spur but that doesn't seem right to me what's other opinions?
Should we be testing after a fused spur for example on a heating circuit I've always been told to only test upto the fused spur but that doesn't seem right to me what's other opinions?
Good question. Inspection and testing or EICR and Pat seem to have the grey area between them. Classic example is a hand dryer to the pub toilet.
Personally I think test all the way to the appliance would be best as with the hand dryer the their could be a metal casing which has become Live.
Another example is the immersion heater element in the boiler tank. How would you know of a fault?
Sam,
What was the terms of the commercial agreement between the duty Holder and the electrician/electrical contractor? That would help to start with. So a EICR as per the detail in BS7671:2018 AmdNo2 2022 or contract to carry out the In service inspection and testing of electrical equipment?
Reg 4(2) of the EAWR 1989 expects the Duty holder to maintain everything, the fixed wiring outlets and also the electrical appliances and equipment.
Cheers GTB
'Testing for what' is the question I'd like to ask.
And I think the answer is "it depends".
BS 7671 doesn't cover equipment, except for its selection (and some aspects of its erection).
You can certainly check for cpc and bonding conductor connections to exposed-conductive-parts ... but it would not be part of R2 for (R1+R2) as part of earth fault loop impedance used for ADS.
Appliances will not always (often?) meet the insulation resistance requirements of BS 7671 - almost certainly L-L or L-N, but possibly also L-PE.
etc.
The question about a heating circuit is not quite the same as for a FCU directly feeding an appliance - as there's often a lot of fixed wiring downstream of the FCU but still before (or possibly after) the boiler (or other "appliances" - thermostats, pumps, diverter valves, etc).
- Andy.
A little more context might help. Is this initial verification or periodic I&T?
If it is a domestic CH system with a conventional junction box, I can see no difficulty taking the top off and testing Zs, but I wouldn't go any further.
A similar approach could be taken with an immersion heater, but dismantling anything more to get to the load side of any flex is more than is required.
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