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Solar Voltaics
Existing
Consumer
Unit
1
2
3
4
5
A
C
D
B
E
G
F
F
E
G
I
I
F
1
2
3
A
C
D
B
4
5
*
*
NNLL
Cat.No.
Wylex have created a number of new PV dedicated products to help installers to economically and
efficiently install Solar Photovoltaic (PV) Systems up to 4kW, including :
l
AC & DC Enclosed Isolators
l
Combination DC/AC PV Isolator in a single enclosure
l
Dual Supply PV & Grid Mains Supply Switch
l
PV Consumer Units (all 17th edition models available)
The equipment is designed to allow the installer to make parallel power connections simply and easily.
Adding PV to an
Complete New
Existing Installation
Installation
Typical Installation Diagrams
Class B RCDs & Surge Protection Devices also available
This guide to Wylex circuit protection & switchgear products is not a substitute for the IET 17
th
Edition wiring
regulations (BS 7671:2011 Requirements for Electrical Installations amendment 1) which should always be used
for design and installation work. Always check with manufacturers of all components of the PV System
(including Solar- Panel & Inverter manufacturers) before selecting and installing circuit protection devices.
Other relevant documents include:
DTI publication Photovoltaics in Buildings, Guide to the installation of PV systems 2
nd
Edition publication number URN 06/1972,
The Microgeneration Certification Scheme installation standard MIS 3002 Solar PV,
Electrical Safety Council best practice guide 3 Connecting a Microgeneration system to a domestic or similar electrical installation,
Approved building regulation Document P
Recommended methods for meeting requirements 1- 5 & A to I
*
Class B RCDs may be required with certain types of inverter.