Revision for G104A part 1

Green

Yellow

Black

white

verification of RCD

correct circuit connections

fault-loop

impedance

insulation resistance

1kΩ

10kΩ

0.2kΩ

10MΩ

socket outlets

lighting

circuits

directly connected hand held electrical equipment

Sub main

Yes, providing the cables are

installed in a separate compartment of a common cable trunking system

No

Yes, providing a distance of 300mm exists

Yes, providing the wiring system of the lower value consists of triple insulation

a point

point of entry

fixed wiring

open wiring

the neutral and earth conductors may be connected together in the multiple earthed neutral system

when viewed from the front, the order of connection is Earth, Active and Neutral in a clockwise direction

when viewed from behind the order of connection is earth, Active and Neutral in a clockwise direction

the

Neutral and Earthed conductors are easily interchanged to suit requirements

of the local supply authority

the wiring should be renewed

the circuit may be connected to the supply

the circuit should be tested again with the element disconnected

the element of the water heater should be replaced with an element that has an insulation resistance in excess of 1MΩ

The setting of a contact-type bi-metal thermostat, mounted on the outside of the vessel, monitoring the vessels temperature

The rate of flow across the heating

elements

The

setting of a stem type thermostat, enclosed by a sheath, located in the

vessel, monitoring the water temperature

The setting of an over-temperature cut-out

domestic

range

double insulated drill

light

in a pool fed from a SELV supply

hot water system