Q and A

Test Your Knowledge

Have you opened your regs book lately?

Don’t worry. This section is here to help you jog your memory.

This is a growing archive of questions and answers which we may all come across from time to time.

Check them out and test your knowledge!

Please feel free to submit your own Q&As to be added to the list.

TT Systems

TT systems. Bonding in bathrooms

TT Systems. Time-delay RCD main switch

Is a Ze of greater than 2oo ohms acceptable on a TT System?

TT Systems. Zs reading higher than tabulated

TT circuits require a disconnection time of 0.2 seconds

General Wiring

Grey as Neutral?

General Installation

Bonding on sink?

Bonding in a Bathroom?

Plastic Pipework 

Inspection & Testing

Cables concealed in walls at less than 50mm deep. Which Recomendadtion code?

Can I issue Part P & Installation Certificates for other peoples work?

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