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Steve Wilkinson

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Across
1.What is the British standard for a typical circuit breaker in a domestic dwelling
3.What is the minimum height of a socket outlet in a domestic dwelling
6.What page shows a label stating - Warning PV supply system
9.What is the maximum floor area that can be served by an A1 ring final circuit
11.State the clip spacing for a generally installed horizontal cable with PVC insulation and an overall diameter of 20mm
13.What section in the OSG deals with testing circuits
14.The maximum Ze for a TNS system in ohms is
18.Which table in the OSG gives the resistance of copper cables
20.What is the maximum low voltage a.c between live conductors
21.How many sections are there in the OSG
23.On what page is there a picture of cables going through a joist
24.What is the trunking factor for a trunking 225x50
25.Which HSE guidance note should an approved voltage indicators comply with
27.What is the conduit factor for a conduit of 63mm diameter (short straight run)
28.What is the UK mains supply frequency
29.What is the nominal voltage for domestic circuits
31.The maximum Zs for a TT earthing system
32.On what page is a label shown stating - Safety electrical connection do not remove
Down
1.What is the factor to be applied to the overall diameter SWA to determine an acceptable bend radii
2.What are the first four number of the ISBN for the OSG
4.What is the test voltage for insulation resistance on a domestic power circuit
5.What page shows a picture of the safe zones for cable to be installed
7.What is the insulation resistance test voltage on a 12V domestic lighting circuit
8.State the assumed power demand in Watts for a lamp holder in a domestic dwelling
10.With which British Standard should earth clamps comply
11.State the maximum Ze for a TN-C-S earthing system in Ohms 0.
12.On what page is there a picture of a diagram showing to reduce the interference of an induction loop
15.HRC fuses should comply with which British Standard
16.Semi enclosed fused should comply to which British Standard
17.The Regs are British Standard
19.How many appendices are there in the OSG
20.What is the maximum height of a light switch in a domestic dwelling
22.On what page in the OSG is there a diagram showing the operation of an RCD
26.On what page are bathroom zones depicted
30.Sate the minimum number of twin socket outlets that should be installed in a small living room

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