Requirements for Mounting the Sunny Multigate
Requirements for the mounting location:
WARNING
Danger to life due to fire or explosion
Despite careful construction, electrical devices can cause fires.
- Do not mount the Sunny Multigate in areas containing highly flammable materials or gases.
- Do not mount the Sunny Multigate in potentially explosive atmospheres.
WARNING
Danger of fire due to non-UL50E industrial enclosure
The Sunny Multigate is only protected against fire if it is installed in an industrial enclosure complying with UL50E. Otherwise, the fire risk could lead to personal injury and property damage.
- For indoor use, always install the Sunny Multigate in a type 1 industrial enclosure with pollution degree 3.
- For outdoor use, always install the Sunny Multigate in a type 3 industrial enclosure with pollution degree 3.
NOTICE
Damage to the Sunny Multigate from moisture and dust intrusion
Dust or moisture intrusion can damage the Sunny Multigate and impair its functionality. The Sunny Multigate must always be installed in an industrial enclosure with back panel complying with UL50E. This will ensure that the Sunny Multigate is protected against dust and moisture and is suitable for indoor and outdoor operation.
- For indoor use, always install the Sunny Multigate in a type 1 industrial enclosure with pollution degree 3.
- For outdoor use, always install the Sunny Multigate in a type 3 industrial enclosure with pollution degree 3.
- The mounting location must be suitable for the installation of the Sunny Multigate in an industrial enclosure of type 1 or type 3.
- The mounting location must be suitable for the weight and dimensions of the industrial enclosure with the Sunny Multigate ( > Technical Data).
- The mounting location must be inaccessible to children.
- AC cable route of the entire PV system with Sunny Multigate: maximum 30 m (100 ft)
When installing several Sunny Multigate devices in a PV system, you must lay the AC cable of each Sunny Multigate to the respective inverter separately in order to guarantee trouble-free communication between the Sunny Multigate and the inverter. - A robust support surface must be available for mounting the device, e.g. concrete, walls. In living areas, ensure that the support surface is not drywall or similar.
- The mounting location should be freely and safely accessible at all times without the need for any auxiliary equipment (such as scaffolding or lifting platforms). Non-fulfillment of these criteria may restrict servicing.
- The mounting location should not be exposed to direct solar irradiation.
- Climatic conditions must be met ( > Technical Data).
- The ambient temperature must be between -40°C (-40°F) and 25°C (113°F). This will ensure optimal operation of the Sunny Multigate.

Maximum AC cable route of the PV system (left: last inverter; right: first inverter connected to Sunny Multigate).
Requirements for the industrial enclosure:
- Industrial enclosure with back panel complying with UL50E, Type 3 for outdoor use or Type 1 for indoor use
- Pollution degree 3
- Material: plastic or metal
- Minimum dimensions (W x H x D): 260 mm x 240 mm x 120 mm (10.3 in x 9.5 in x 4.7 in)
- Minimum volume: 19 liters
- Fire protection class: minimum UL 94 5VA
- Operating temperature range: −40°C to +45°C (−40°F to 113°F)
- A warning label with the following text must be available:
"DANGER - Risk of Electric Shock. Do not remove cover. No user serviceable parts inside. Refer servicing to qualified service personnel."
"DANGER - Hazardous voltage remains for five minutes after disconnecting main power supply."
Clearances:
- The minimum clearance of the Sunny Multigate to the outer walls of the metal industrial enclosure is 12.7 mm (0.5 in).
- Within an industrial closure, observe the following clearances to ensure sufficient ventilation:

Recommended clearances
Position |
Dimensions |
---|---|
A |
98 mm (3.86 in) |
B |
150 mm (5.9 in) |
Permitted mounting positions of the Sunny Multigate:
- Only mount the Sunny Multigate horizontally.
Dimensions for mounting the Sunny Multigate with screws:

Dimensions of the Sunny Multigate and the drill holes for mounting with screws