What size cable is used for supplementary bonding?

4mm
Supplementary Bonding is the use of a slighter thinner (4mm) green and yellow copper cable to connect together all metal pipes (and possible circuits) in a particular area. This area is typically the bathroom, or any other room containing a bath or shower.

What is supplementary bonding?

Supplementary bonding is the practice of connecting two conductive simultaneously accessible parts together to reduce the potential difference between the parts.

Is supplementary bonding required?

You may need supplementary bonding for rooms containing a bath or shower, except where all circuits in the room are RCD protected and the main bonding is up to the required standard.

Do you need supplementary bonding in a bathroom?

Yes as written supplementary bonding in a bathroom can only be omitted in a building (homes. hospitals, hotels etc) where there is main protective bonding. No main protective bonding then supplementary bonding cannot be omitted.

What is electrical bonding test?

The ground bond test is the first test required for electrical safety testing. The ground bond test is done to see if the ground points of the device are connected to the mains ground.

What size earth do I need for a TT system?

16mm earth minimum, if tails(line conductors) are greater than 16mm and equal or less than 35mm .

What is the minimum size of a supplementary bonding conductor where mechanical protection is provided?

IEE Clause 544.2. 3 states that the minimum size of supplementary bonding conductor shall have a CSA of no less than 2.5 mm2 if sheathed or mechanically protected or 4mm2 if not sheathed or mechanically protected.

Where is supplementary bonding found?

supplementary Bonding is installed in the kitchen, i.e. connecting kitchen sink with the hot and cold water pipes, a lot less frequently these days due to the relaxation in the 17th Edition with regards to Supplementary Bonding.

Where can I find supplementary bonding?

Supplementary Bonding is the use of a slighter thinner (4mm) green and yellow copper cable to connect together all metal pipes (and possible circuits) in a particular area. This area is typically the bathroom, or any other room containing a bath or shower.

When can Supplementary bonding be omitted?

1.2, supplementary protective equipotential bonding may be omitted where all of the following conditions are met: You don’t have any main protective bonding, so supplementary bonding may not be omitted. You have to install it i.a.w. the first part of 701.415.