Labels for Solar PV Systems

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Suitable labelling for PV systems as required by MCS guidelines.

Labels are printed on self adhesive vinyl and are designed to remain legible and in place throughout the design life of the system. The Wind & Sun label packs are suitable for typical domestic systems or labels are available in sheets of one type.

Large quantities are also available on a roll by request.

PV Label pack

Pack containing labels needed for a typical domestic solar PV installation.

For details on the contents please see: Label Pack Information Sheet

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Product Code Description Retail Price
(ex VAT)
LBL/PACK1 PV System label pack £5.95

Warning dual supply label

Dual supply labelling should be provided at the service termination, meter position and all points of isolation between the PV system and supplier terminals to indicate the presence of on-site generation and indicating the position of the main a.c. switch disconnector.

110 W x 50 H mm

W&S Warning Dual Supply Label
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Product Code Description Retail Price
(ex VAT)
LBL/01 G83 Warning Dual Supply label £0.80

Inverter label

It is recommended that Inverters carry a sign stating "Inverter - isolate a.c. and d.c. before carrying out work"

Ideally a label stating "not to block ventilation" will be placed next to the inverter to ensure the customer does not block the vents of the inverter, this can cause a loss in system performance as the inverter will de-rate when it reaches its maximum operating temperature.

90 W x 30 H mm

W&S Inverter Label
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Product Code Description Retail Price
(ex VAT)
LBL/02 Inverter label £0.30

DC cable label

Where long cable runs are necessary (e.g. over 20m), labels should be fixed along the d.c. cables.

Labeling fixed every 5 to 10m is considered sufficient to identify the cable on straight runs where a clear view is possible between labels.

Where multiple PV sub-arrays and/or string conductors enter a junction box they should be grouped or identified in pairs so that positive and negative conductors of the same circuit may easily be clearly distinguished from other pairs.

90 W x 30 H mm

W&S DC Cable Label
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Product Code Description Retail Price
(ex VAT)
LBL/03 D.C. Cable label £0.30

Do not disconnect plugs and sockets label

Connectors readily accessible to ordinary persons shall be of the locking type, requiring a tool or two separate actions to separate and shall have sign attached that reads: 'Do not disconnect d.c. plugs and sockets under load'.

140 W x 15 H mm

W&S Do Not Disconnect Plugs And Sockets Label
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Product Code Description Retail Price
(ex VAT)
LBL/04 Do not disconnect DC plugs & sockets under load label £0.30

SMA ESS DC isolator label

Installations using SMA Sunny Boy inverters with the ESS disconnect will not need an additional d.c. isolator, but should be labelled to identify it as the d.c. isolator.

100 W x 40 H mm

W&S SMA ESS DC Isolator Label
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Product Code Description Retail Price
(ex VAT)
LBL/05 SMA ESS D.C. Isolator label £0.65

PV array DC isolator label

The switch must be labelled as 'PV array d.c. isolator', with the ON and OFF positions clearly marked. Switch enclosures should also be labelled with 'Danger - contains live parts during daylight'.

90 W x 30 H mm

W&S PV Array DC Isolator Label
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Product Code Description Retail Price
(ex VAT)
LBL/06 PV Array D.C. Isolator label £0.30

PV array DC junction box label

The d.c. junction box must be labelled with: 'PV array d.c. junction box, Danger contains live parts during daylight'.

90 W x 30 H mm

W&S PV Array DC Junction Box Label
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Product Code Description Retail Price
(ex VAT)
LBL/07 PV Array D.C. Junction Box label £0.30

PV system – main AC isolator label

This switch shall clearly show the ON and OFF positions and be labelled as 'PV system - main a.c. isolator'.

60 W x 20 H mm

W&S PV System Main AC Isolator Label
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Product Code Description Retail Price
(ex VAT)
LBL/08 PV system - main A.C. Isolator label £0.20

Solar PV system generation meter label

For use to identify the solar PV system generation meter.

80 W x 10 H mm

W&S PV System Generation Meter Label
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Product Code Description Retail Price
(ex VAT)
LBL/09 PV System Generation Meter label £0.10

Fire and rescue notification label/sign

To ensure the Fire and Rescue Service are aware that a PV system is installed on the roof, the following sign shall also be fitted:

  • Location: next to the suppliers' cut-out in the building
  • Size: This label shall measure at least 100mm x 100mm

104 W x 104 H mm (2mm white border)

ONLY REQUIRED FOR PV SYSTEMS FITTED ON ROOFS

W&S Fire And Rescue Notification Label Sign
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Product Code Description Retail Price
(ex VAT)
LBL/15 Fire and rescue notification label/sign £0.95