Installation Manual

The mounting location of the antenna is crucial for the quality of the wireless connection. Radio waves are emitted in
circles from the longitudinal side of the antenna. A circular dead spot begins at the tip of the antenna. If you place the
receiver in this dead spot, the receiver cannot receive any radio waves from the antenna.
Figure 3: Radio waves emitting from the antenna
Position Explanation
A Dead spot
Requirements for the mounting location:
☐ An antenna cable length of 3m (9.8ft) must be observed. The antenna cable must not be extended.
☐ The antenna cable must be placed in such a way that the minimum bending radius of 35mm (1.38in) is
maintained.
☐ The receiver must not be in the dead spot of the antenna.
4.2 Mounting the Antenna
Damage to the inverter due to moisture ingress during electrical installation
• Never open the inverter when it is raining or snowing, or the humidity is over 95%.
• For attaching the conduits to the enclosure, only use UL-listed rain-tight conduit fittings or UL-listed conduit fittings
for wet locations complying with UL514B.
• Seal all unused openings tightly.
Electrical installations
All electrical installations must be carried out in accordance with the local standards and the National Electrical
Code
®
ANSI/NFPA 70 or the Canadian Electrical Code
®
CSA C22.1.
4 Mounting
SMA Solar Technology America LLC
Installation Manual 13EXTANT-US-40-IA-en-11