Systems for use with Renewable Energy
Relevant Regulations 3
Voltage drop
The voltage at the terminals of the fixed equipment must not be less than
the minimum value specified in the British Standard relevant to the fixed
equipment. Where no British Standard is available for the fixed equipment,
the voltage drop within the installation must not exceed a value appropriate
to the safe functioning of the equipment.
Where the supply is given in accordance with the Electricity Supply Regulations
1988 and 1990, the previous requirements are satisfied if the voltage drop
from the origin of the installation up to the terminals of the fixed equipment
does not exceed 4% of the nominal voltage of the supply.
525-01
Identification of Equipment
Unless there is no possibility of confusion, switchgear and controlgear shall
be labelled, and where danger could arise because it is remote from the operator,
a suitable indicator complying with BS1710 shall be placed at the operator’s
position.
514-01
Protective devices for circuits, including those in a distribution
board, shall be identified so that the circuits protected may be easily recognised.
514-08
The nominal current rating appropriate to the circuit shall
be on, or adjacent to, every fuse or circuit breaker.
533-01-01
Earthing label
At the point of connection of every earthing conductor to an earth electrode,
or a bonding conductor to an extraneous conductive part, a permanent label
shall be fixed. The label shall be durably marked, with letters not less than
14 point, containing the words ‘Electrical Safety
Connection-Do Not Remove’.
514-13-01
Protective Conductors (earthing)
Except for socket outlets connected to SELV/FELV circuits, a protective conductor
shall be provided at every socket outlet.
471-08-08
Each socket outlet shall be of the two pole and earthing contact
type, and shall be protected individually, or in groups of not more than six
sockets, by a 30mA RCD complying with BS 4293.
608-13-02
The position of sockets mounted on a vertical wall or surface
shall minimise the risk of damage to the socket outlet, plug, or the flexible
cable, whilst the plug is being inserted or withdrawn.
553-01-06
With the exception of toilets and offices, every socket outlet
and cable coupler used on a construction site shall comply with BS 4343.
604-12-02
Fundamental requirements for safety
Where exposed conductive parts of electrical equipment may be charged with
electricity due to the insulation of a semiconductor becoming defective, or
due to a fault in the equipment, the exposed conductive parts shall be earthed
by a method which will discharge the electrical energy without danger, or
an equally effective measure that will prevent danger shall be used, i.e.
Class II insulation.
130-04-01
Protective devices that will prevent the persistence of dangerous
earth leakage currents shall be provided for every circuit.
130-04-02
Overcurrent devices shall be provided to stop the persistence
of an earth fault current, and where an earth fault current is insufficient
to cause the rapid operation of an overcurrent device, a residual current
device shall be used to protect against dangerous earth fault currents.
130-04-03
Indirect Contact
Where the disconnection times for protection against indirect contact cannot
be achieved using overcurrent protective devices, protection shall be made
by an RCD. Where protection is provided by an RCD,
413-02-15, 413-02-16
Direct Contact
An RCD cannot be used as the only means of protection against direct contact,
but it can be used to reduce the risk of direct contact, providing:
1. It has a residual operating current not greater than 30mA, and has a residual
operating time not exceeding 40msec, when subjected to a residual current
of 150mA,
2. Protection against direct contact is provided by insulation, barriers,
enclosures, obstacles or placing out of reach.
412-06-02
