Extend Cabling With Junction Boxes In Complex Applications.
Extend Cabling With Junction Boxes — When installing long cable runs, it’s a very smart idea to include junction boxes in longer and more convoluted circuits to make routine maintenance and troubleshooting easier.
Depending on the nature of the circuit, it’s likely that additional amplification of signals may be required before or after a junction, so take this into account. You’ll obviously need to size boxes correctly so they will accommodate required junction hardware.
Be aware that junction boxes in any kind of electronic security circuit represent a significant vulnerability. That means the installation of anti-tamper junction boxes is vital. Be sure to consider the vulnerability of all cabling when installing a system and try to ensure there are no compromises.
And consider the environment junction boxes will be installed in. Internally use IP65 boxes, which are dustproof and resistant to jets of water, as a minimum. Externally, use IP66 as a minimum and go for IP67 submersible boxes if there’s any chance of flooding. In higher security environments, use IP67 throughout.
Look for features like shielding, flanging, quality silicone seals, location lugs and screws of matching metals – stainless fixings and cast aluminium housings end badly. If you can’t match metal nobility, separate metals with inert spacers.
If you install plastic, make sure it’s thermo, UV stabilised, with rust free fixings, robust build quality, decent seals, membraned cable entries, a door that is hinged to the side or the top, sufficient knockouts or fixing holes, and anything else you decide you need.
Bear in mind that a bellied cover will give around 10 per cent more room in a junction or control box without a larger installation footprint.
Initial cost will be a factor with quality metal enclosures, but your system will be better organised, easier to troubleshoot and ultimately more secure if you use higher end items.
When it comes to installation costs, factor in one trip across town when pricing up each component in order to price in the opportunity cost of low-end junk.
You can find junction boxes for sale here, or read more SEN news here.
“Extend Cabling With Junction Boxes In Complex Applications.”
