Federal!Signal!UltraVoice!Remote!Interface!(UVRI)!
Installation,!Operation,!and!Service!Manual!
!
!
INSTALLATION!
42!
7.5! Electrical!Connections!
!
Make! all! electrical! connections! in! compliance! with! local! electrical! codes! and! NEC!
recommendations.!Disconnect!all!power!and!read!all!warnings!at!the!beginning!of!this!
manual!and!on!the!batteries!before!making!connections.!
7.5.1! Grounding!Requirements!
!
1.! The! UVRI! cabinet! must! be! properly! connected! to! an! earth! ground.! The! cabinet!
contains!an!external!¼"!ground!stud!for!making!this!connection.!!
2.! Externally! installed! antennas! require! a! dedicated! ground! to! either! a! ground!rod! or!
building!steel!
below
!grade!in!addition!to!the!UVRI!cabinet!ground.!
7.5.2! DIN!Rail!Terminal!Blocks!!
!
These!points!provide!a!convenient!location!for!making!the!AC!power!connections.!A!small!
screwdriver!must!be!pushed!into!the!square!opening!in!the!terminal!block!to!open!the!
contact!of!the!block.!With!the!wire!inserted,!the!block!will!clamp!the!wire!with!a!spring9
loaded!connection!when!the!screwdriver!is!removed!from!the!terminal!block.!
!
Each!terminal!block!accepts!bare!12914!AWG!wire.!The!terminal!blocks!are!labeled!L1!
and!L2.!!
!
7.5.3! 120!VAC!Electrical!Service!Wiring!
!
1.! Install!a!dedicated!15!A!circuit!breaker!in!an!existing!breaker!panel!or!install!a!new!
breaker!panel!if!necessary!for!the!UVRI.!
!
2.! Install!conduit!from!the!breaker!panel!to!the!½"!conduit!entrance!in!the!bottom!of!the!
UVRI.!
!
3.! Route!user9supplied!12914!AWG!wires!(1!black,!1!white,!1!green)!through!the!conduit!
from!the!UVRI!Cabinet!and!the!fused!breaker!panel.!
!
4.! Connect!the!white!neutral!wire!from!the!breaker!panel!neutral!to!the!DIN!rail!mounted!
terminal!block!labeled!L1!in!the!UVRI!control!cabinet.!
!!!
5.! Connect!the!black!line!wire!from!the!15A!breaker!to!the!DIN!rail!mounted!terminal!
block!labeled!L2!in!the!UVRI!control!cabinet.!!
!
6.! Optionally,!connect!a!green!ground!wire!from!the!breaker!panel!earth!ground!to!the!
green!ground!block!in!the!UVRI!cabinet!or!run!a!ground!lead!from!the!external!1/4”!
ground!stud!on!the!UVRI!cabinet!to!earth!ground.!