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PERIODIC INSPECTION OF EXISTING DOMESTIC AND SIMILAR INSTALLATIONS |
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| PDQ1 |
During periodic inspections of domestic electrical installations, I often find that cables that are concealed in walls at a depth of less than 50 mm have no additional protection by means of an RCD, as is now required for installations complying with the 17th Edition. What Recommendation Code should I give? |
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| PDA1 |
Code 4. Although existing installations need to be assessed against the requirements of the 17th Edition, this does not necessarily mean that they require upgrading, unless a departure from the latest requirements constitutes an immediate or potential danger.
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Introduction to
BS 7671: 2008 |
| PDQ2 |
Where can I find the maximum earth fault loop impedance values for BS 3871 circuit breakers? |
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| PDA2 |
Click here!
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| PDQ3 |
What Recommendation Code should be given if it is found that there is no supplementary bonding in a bathroom, and the alternative protective measures called for in the 17th Edition are not present? |
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| PDA3 |
Recommendation Code 2
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| PDQ4 |
Is it necessary to verify voltage drop during a periodic inspection? |
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| PDA4 |
Verification of voltage drop is not normally required unless there is considered to be a voltage drop problem.
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621.2 |
| PDQ5 |
Where can I find general guidance on the use of Recommendation Codes for domestic periodic inspection reports? |
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| PDA5 |
General guidance on the use of Recommendation Codes is available in the Electrical Safety Council’s Best Practice Guide No 4, which may be viewed or downloaded free of charge by clicking here
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