SMA SI-TB-BOX-10 - Manual (Page 37)

SMA America, LLC 6 Electrical Connection
Installation Manual SI_TDBOX-IA-eng-IUS122211 37
6.4 Inserting the Cables
Insert each cable into the Smartformer according to the following procedure.
1. Open the Smartformer using the two door handles.
2. Disassemble the contact hazard protection cover (see Section 9.1).
3. Select the conduit that matches the external diameter of the chosen cable (see Section 6.2.1
or Section 6.2.2). Take the National Electrical Code
®
, ANSI/NFPA 70, and all locally
applicable standards and regulations into consideration.
4. Select the flange plate for inserting the cable:
• To introduce the cable from below into the Smartformer, select the lower flange plate.
• To introduce the cable from above into the Smartformer, select the upper flange plate.
5. Select the knockout that matches the conduit (see Section 6.2.1 and Section 6.2.2).
6. Open the selected knockout using a hammer and
screwdriver. Tip: Open all knockouts for the upper
or lower flange plate before reinserting the flange
plates.
Risk of injury due to cable fire
Hot fluids that arise during a cable fire can emerge from the open knockouts in the bottom flange
plate.
• Make sure that all knockouts that have be opened for introducing cables are in use.
• Close unused knockouts with a suitable material.
7.
Destruction of the thread if flange plate is mounted multiple times
When they are being screwed in, the PZ 2 screws cut a thread into the Smartformer enclosure.
Screwing them in more than once destroys this thread. This means that the flange plates are no
long screwed tight.
• Make sure that all required knockouts have been opened before the flange plate is
mounted.
• The flange plates must not be screwed to the enclosure more than once.