Gizmologist09
enthusiast
Reged: 02/08/09
Posts: 269
Loc: Palmdale, California USA
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Re: Home Theater Projection Screen Wiring
02/05/10 08:39 AM
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Yes, the screen's attached SJO cord is short and designed ONLY to go as far as necessary to reach whatever control system is used, whether a 120v up/down rocker or the low voltage controller interface. The cord length is designed to be only long enough to reach the mounting surface of the screen where a Jbox is mounted. Depending on the available power, the first Jbox may have the 120 volt feed as well as the common and 2 switch legs for the U/D controls or the wiring can be extended via romex or THHN in conduit to the end control point.
Although it is permissible to surface mount the SJO cord to enter a surface mount switchbox, it is rarely done as it looks terrible in most circumstances.
At no time is it permissible to use a 4 conductor AC plug or 2 standard AC plugs to terminate the control harness as this would entail having switched outlet(s).
It is NOT (as correctly noted) to run inside a wall.
If the control desired is simply a SPDT rocker, then we do use 14/3 w/gnd romex to go from the 1st Jbox terminating the SJO cord to wherever the control is mounted, sometimes on the opposite end of the room or a control room.
Edited by Gizmologist09 (02/05/10 08:46 AM)
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