1 IET Wiring Regulations by Brian Scaddan

Author:Brian Scaddan
Language: eng
Format: epub
ISBN: 9780429882937
Publisher: CRC Press

FIGURE 3.5 FIGURE 3.6 FIGURE 3.7 L and N cross connections. FIGURE 3.8 L and cpc cross connections. In this instance, if the cable is of the flat twin type, the readings at each socket will increase very slightly and then decrease around the ring. This difference, due to the line and cpc being different sizes, will not be significant enough to cause any concern. The measured value is very important, it is R1 + R2 for the ring.

As before, loose connections, spurs and, in this case, L–N cross polarity will be picked up.

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