Wiring Connection Diagrams; Upstream Over-Current Protection Device; Conductor Routing; Conductor Openings - Total Protection Solutions LowProfile 080 Operation Manual

WARNING: Check to ensure that a proper bond is installed between neutral and ground at the transformer
upstream from all 3-phase WYE or split-phase LowProfile SPD (See NEC Article 250). If the transformer is not
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accessible, check the main service disconnect/panel for the N-G bond. Lack of a proper bond will damage
LowProfile and void the warranty.

2. Wiring Connection Diagrams

Figure 3 shows the electrical relationship between LowProfile and these three basic service configurations:
Split phase, 3-wire, Three-phase, 4-wire WYE, and Three-phase, 4-wire high-leg Delta.
Fig. 1: Split Phase, 3-Wire
Connections to the SPD are clearly identified. Connections are made via pigtail leads supplied with the unit. For 3 phase
units phases A, B and C are black wires, which are marked "Phase A", "Phase B" and "Phase C" respectively. For split phase
units, the phase connections are marked "Phase A" and "Phase B". The neutral is a white wire and the ground is a
green/yellow wire.
3. Upstream Over-Current Protection Devices
The LowProfile has been listed to UL1449 as a Type 1 SPD. Type 1 SPDs can be used in Type 1 or Type 2 SPD applications,
which means that the LowProfile does not need to be connected behind an upstream over current protection device and can
be connected on either the line or load side of the main service disconnect. The LowProfile must be connnected in parallel
with the electrical system. All LowProfile units come standard with component-level over-current fusing rated at 200,000 rms
symmetrical amperes at 600VAC.
CAUTION: Do not splice Low Profile conductorswithin the unit's enclosures or Manufacturer's warranty will
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be void. LowProfile's performance will be limited severely if the conductors are (a) too long, (b) are of too small
a wire gauge, (c) have too many bends or (d) have sharp bends.

4. Conductor Routing

The factors listed above should be addressed during the design of an installation to reserve a suitable place for LowProfile
next to its point of connection to the electrical system. The selected mounting location should allow for the shortest possible
conductor runs and a direct route with a minimum of bends. If bends are required, they should be sweeping bends. Do not
make sharp 90° bends for appearance purposes because they will severely decrease the effectiveness of LowProfile.
Braiding or twisting conductors together using tie-wraps or electrical tape increases the protection performance of the device.
One or two twists or braids of all conductors per foot and securely tie-wrap when conductor lengths must exceed 12".
5. Conduit Openings
All LP units come with a 3/4" conduit hub and chase nipple. There are three conduit openings located in top, top left, and
top right sides of the enclosure. The hub can be installed in any of the three openings. The remaining unused openings can
be covered with supplied knock-out seals.
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Fig. 2: 3-Phase, 4-Wire WYE
SPD
Fig. 3: 3-Phase, 4-Wire High-Leg DELT
SPD
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LOWPROFILE InstaLLatIOn, OPERatIOn and MaIntEnancE ManuaL
SPD